<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:a28d9a9b-b6ea-4319-a36f-e81291060c43,g:f1d02fa8-2dd2-48a2-a9bd-d78adb878c17-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.fnf.com/role/Cover" xlink:type="simple" xlink:href="fnf-20201231.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Cover" xlink:type="extended" id="ia3478812c16540e69654228261249390_Cover">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_c83e7a26-e47f-4db9-af4d-0a66f25f5870" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_DocumentType_c83e7a26-e47f-4db9-af4d-0a66f25f5870" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAnnualReport_fd4e3d71-5502-42e6-93e7-73e001b21dc9" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentAnnualReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_DocumentAnnualReport_fd4e3d71-5502-42e6-93e7-73e001b21dc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_f71c0b4e-44b5-41d4-a30b-2a3bd192a8da" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_DocumentPeriodEndDate_f71c0b4e-44b5-41d4-a30b-2a3bd192a8da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_ab8db74a-e1be-494a-81df-7149f2b1934e" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_CurrentFiscalYearEndDate_ab8db74a-e1be-494a-81df-7149f2b1934e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_4759cfb3-3a04-4276-8de9-13563efbdd77" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_DocumentTransitionReport_4759cfb3-3a04-4276-8de9-13563efbdd77" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_550e44e7-8239-4438-953b-b8e73a6b036f" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityFileNumber_550e44e7-8239-4438-953b-b8e73a6b036f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_f4393e0d-a91c-409e-898c-d12e5c7d9280" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityRegistrantName_f4393e0d-a91c-409e-898c-d12e5c7d9280" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_ac125788-4a90-435c-a104-4ff1b1e5ad22" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityIncorporationStateCountryCode_ac125788-4a90-435c-a104-4ff1b1e5ad22" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_4adba9fa-5bb5-4fa4-a8ea-1b65225ff6a7" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityTaxIdentificationNumber_4adba9fa-5bb5-4fa4-a8ea-1b65225ff6a7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_a7f75c14-d5fc-4319-9918-dfd0f93c4f99" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityAddressAddressLine1_a7f75c14-d5fc-4319-9918-dfd0f93c4f99" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_d3ed6a6c-421e-46d4-97e3-5b1769fedb50" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityAddressCityOrTown_d3ed6a6c-421e-46d4-97e3-5b1769fedb50" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_392b765e-284e-4aa5-b2e6-9bea13c871ad" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityAddressStateOrProvince_392b765e-284e-4aa5-b2e6-9bea13c871ad" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_22434e43-bb78-48f3-aca3-7e340505fe27" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityAddressPostalZipCode_22434e43-bb78-48f3-aca3-7e340505fe27" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_7c951b5e-4f2d-4529-a221-41aad608abb6" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_CityAreaCode_7c951b5e-4f2d-4529-a221-41aad608abb6" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_48e4cdd1-81b2-4162-903e-60d8ec4a44b3" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_LocalPhoneNumber_48e4cdd1-81b2-4162-903e-60d8ec4a44b3" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_8fa63838-ef60-4b10-ab28-beea9ed2dd4e" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_Security12bTitle_8fa63838-ef60-4b10-ab28-beea9ed2dd4e" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_492c4da2-e95b-4fc9-87dd-d93863047165" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_TradingSymbol_492c4da2-e95b-4fc9-87dd-d93863047165" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_695374db-fd43-4360-bbb0-46fd58371355" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_SecurityExchangeName_695374db-fd43-4360-bbb0-46fd58371355" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_54cfccf5-7421-4a0f-87b3-fe6be78f320b" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityCurrentReportingStatus_54cfccf5-7421-4a0f-87b3-fe6be78f320b" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_d007dfcf-f991-48ae-8312-ecbce3c436af" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityInteractiveDataCurrent_d007dfcf-f991-48ae-8312-ecbce3c436af" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_91c8d880-db89-4952-8240-16f3d7b7c8ef" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityFilerCategory_91c8d880-db89-4952-8240-16f3d7b7c8ef" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_ce4e6d05-c38b-433b-aade-da6850962192" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntitySmallBusiness_ce4e6d05-c38b-433b-aade-da6850962192" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_30cc143a-93af-47c3-8ed5-504df75a0ddd" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityEmergingGrowthCompany_30cc143a-93af-47c3-8ed5-504df75a0ddd" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_IcfrAuditorAttestationFlag_a24e2939-8db5-45e5-aafe-6a9f197aa277" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_IcfrAuditorAttestationFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_IcfrAuditorAttestationFlag_a24e2939-8db5-45e5-aafe-6a9f197aa277" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_9a84859b-a849-4656-9f25-af977402b246" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityShellCompany_9a84859b-a849-4656-9f25-af977402b246" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityPublicFloat_e538a242-17fd-4692-aafd-ef00d6972f0b" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityPublicFloat"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityPublicFloat_e538a242-17fd-4692-aafd-ef00d6972f0b" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_507010cc-a287-4cbc-837e-2d501093f758" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_507010cc-a287-4cbc-837e-2d501093f758" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_b19adfeb-7593-4c52-880d-2668b59ddec7" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_AmendmentFlag_b19adfeb-7593-4c52-880d-2668b59ddec7" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_b7fa48b9-e5e0-40f6-a97d-1f51bd8a35e9" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_DocumentFiscalYearFocus_b7fa48b9-e5e0-40f6-a97d-1f51bd8a35e9" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_37725cba-46e3-4292-8c55-64cc87337105" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_DocumentFiscalPeriodFocus_37725cba-46e3-4292-8c55-64cc87337105" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_0fc207b7-b571-45b1-b203-bdaa9d85348e" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityCentralIndexKey_0fc207b7-b571-45b1-b203-bdaa9d85348e" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_b52f4904-51dd-4007-9188-4c30f2701ea0" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityWellKnownSeasonedIssuer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_b52f4904-51dd-4007-9188-4c30f2701ea0" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityVoluntaryFilers_c596f416-08ae-4196-b285-1fc834843943" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityVoluntaryFilers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_EntityVoluntaryFilers_c596f416-08ae-4196-b285-1fc834843943" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_d1aa6d4d-c339-415c-b0e5-e0b289e440d5" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_e157bf12-2579-4d7c-b01e-99b63d341a16" xlink:to="loc_dei_DocumentInformationTable_d1aa6d4d-c339-415c-b0e5-e0b289e440d5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_b60bfcc1-987f-4709-b560-8c8a81fbdcea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_d1aa6d4d-c339-415c-b0e5-e0b289e440d5" xlink:to="loc_us-gaap_StatementClassOfStockAxis_b60bfcc1-987f-4709-b560-8c8a81fbdcea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_b60bfcc1-987f-4709-b560-8c8a81fbdcea_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_b60bfcc1-987f-4709-b560-8c8a81fbdcea" xlink:to="loc_us-gaap_ClassOfStockDomain_b60bfcc1-987f-4709-b560-8c8a81fbdcea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_4c3d3b1a-603c-4e45-bcd1-6705f77a0585" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_b60bfcc1-987f-4709-b560-8c8a81fbdcea" xlink:to="loc_us-gaap_ClassOfStockDomain_4c3d3b1a-603c-4e45-bcd1-6705f77a0585" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_fabc5867-4286-4755-b5a0-3bec0d49a7b9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_4c3d3b1a-603c-4e45-bcd1-6705f77a0585" xlink:to="loc_us-gaap_CommonStockMember_fabc5867-4286-4755-b5a0-3bec0d49a7b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_161b24d1-dca3-46dd-a590-435f47ddb04e" xlink:href="fnf-20201231.xsd#fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_4c3d3b1a-603c-4e45-bcd1-6705f77a0585" xlink:to="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_161b24d1-dca3-46dd-a590-435f47ddb04e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A340NotesDueJune152030Member_dff33bb7-f19c-43f9-9649-9b47b9f20e1b" xlink:href="fnf-20201231.xsd#fnf_A340NotesDueJune152030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_4c3d3b1a-603c-4e45-bcd1-6705f77a0585" xlink:to="loc_fnf_A340NotesDueJune152030Member_dff33bb7-f19c-43f9-9649-9b47b9f20e1b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A245SeniorNotesDueMarch2031Member_bac15aa4-4aca-4f07-b86e-42ad75677aee" xlink:href="fnf-20201231.xsd#fnf_A245SeniorNotesDueMarch2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_4c3d3b1a-603c-4e45-bcd1-6705f77a0585" xlink:to="loc_fnf_A245SeniorNotesDueMarch2031Member_bac15aa4-4aca-4f07-b86e-42ad75677aee" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="fnf-20201231.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended" id="i0c3ab02bd10247f6b806077844c1c499_CONSOLIDATEDBALANCESHEETS">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_5f07c427-e560-45fd-a828-527a72b35720" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5f07c427-e560-45fd-a828-527a72b35720" xlink:to="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradingSecuritiesDebt_a5716a07-174e-4d1d-971f-4cc0f1977cd4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingSecuritiesDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_TradingSecuritiesDebt_a5716a07-174e-4d1d-971f-4cc0f1977cd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_91d0f0fc-56db-4897-830a-eb6e22ae5d88" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_91d0f0fc-56db-4897-830a-eb6e22ae5d88" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_e5ac5440-594c-4262-8b87-b4d553d602cf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_DerivativeAssets_e5ac5440-594c-4262-8b87-b4d553d602cf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_0c5f8e45-c474-40e2-8f2e-d355eb03b620" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_NotesReceivableNet_0c5f8e45-c474-40e2-8f2e-d355eb03b620" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_308fd491-6c1e-4234-9d0a-72401e905f4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_EquityMethodInvestments_308fd491-6c1e-4234-9d0a-72401e905f4f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermInvestments_a7046a09-5dca-41b3-aef8-b7c17d26ebd1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_OtherLongTermInvestments_a7046a09-5dca-41b3-aef8-b7c17d26ebd1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermInvestments_6dbe4f74-f809-400d-9251-d2e86c102cc6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_OtherShortTermInvestments_6dbe4f74-f809-400d-9251-d2e86c102cc6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_11a20a62-71ea-4cb0-82dc-5d5d5c4a8441" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Investments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsAbstract_83de2b9e-2842-410d-85d0-b34b9859017a" xlink:to="loc_us-gaap_Investments_11a20a62-71ea-4cb0-82dc-5d5d5c4a8441" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a4219c34-f9a0-4cb0-9420-9640a5604b68" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a4219c34-f9a0-4cb0-9420-9640a5604b68" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_5832db71-0df1-407a-b595-7994ea64ef7e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_5832db71-0df1-407a-b595-7994ea64ef7e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceRecoverables_a2193935-b872-4baa-b090-f108e916ea97" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsuranceRecoverables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_ReinsuranceRecoverables_a2193935-b872-4baa-b090-f108e916ea97" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_579f2ec0-d1ea-4434-a93d-8b2d0155e145" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_Goodwill_579f2ec0-d1ea-4434-a93d-8b2d0155e145" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_57b6aa5b-e97a-44c6-9145-1a1983936fd5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_57b6aa5b-e97a-44c6-9145-1a1983936fd5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_11d08905-f2b0-4640-a5d1-296bd1d10cb4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_11d08905-f2b0-4640-a5d1-296bd1d10cb4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IntangibleAssetsNetExcludingGoodwillandTitlePlants_710d3b89-7206-4ea0-b875-eb45cce8ac54" xlink:href="fnf-20201231.xsd#fnf_IntangibleAssetsNetExcludingGoodwillandTitlePlants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_fnf_IntangibleAssetsNetExcludingGoodwillandTitlePlants_710d3b89-7206-4ea0-b875-eb45cce8ac54" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IntangibleAssetsTitlePlants_4483525e-b572-4433-bf8b-f29815564ac1" xlink:href="fnf-20201231.xsd#fnf_IntangibleAssetsTitlePlants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_fnf_IntangibleAssetsTitlePlants_4483525e-b572-4433-bf8b-f29815564ac1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_3c423b85-d5d3-4e01-b860-72c476d70215" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_3c423b85-d5d3-4e01-b860-72c476d70215" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_84bc0862-00ad-407d-baf0-05e385a30ff1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_84bc0862-00ad-407d-baf0-05e385a30ff1" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_aaf1f9e8-df00-475d-b48c-81837cc5e372" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_7937361e-5444-456a-b520-7131c8b63936" xlink:to="loc_us-gaap_Assets_aaf1f9e8-df00-475d-b48c-81837cc5e372" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a375e764-eec1-4aac-ada7-cfd7b92b36e5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_5f07c427-e560-45fd-a828-527a72b35720" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a375e764-eec1-4aac-ada7-cfd7b92b36e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a375e764-eec1-4aac-ada7-cfd7b92b36e5" xlink:to="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderFunds_d3f8ff74-975c-4344-8760-40d7f21e84b3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PolicyholderFunds"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_PolicyholderFunds_d3f8ff74-975c-4344-8760-40d7f21e84b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefits_7906cc77-1319-4c7c-a7a4-e0e80da44f43" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForFuturePolicyBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefits_7906cc77-1319-4c7c-a7a4-e0e80da44f43" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_6ea7077c-6059-4363-b9e0-c37616b9d70c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_6ea7077c-6059-4363-b9e0-c37616b9d70c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_c30737cb-0ef3-4f58-a96c-41ec167cc10d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_LongTermDebt_c30737cb-0ef3-4f58-a96c-41ec167cc10d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_eb74828b-4fb0-43b1-a75e-5e136168603a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_eb74828b-4fb0-43b1-a75e-5e136168603a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsLiability_27b2950b-23b9-4416-beaa-0baea61be40d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FundsHeldUnderReinsuranceAgreementsLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsLiability_27b2950b-23b9-4416-beaa-0baea61be40d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ContractWithCustomerLiabilityCustomerDeposits_920717a6-b908-40dd-9e07-a79a63aca19c" xlink:href="fnf-20201231.xsd#fnf_ContractWithCustomerLiabilityCustomerDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_fnf_ContractWithCustomerLiabilityCustomerDeposits_920717a6-b908-40dd-9e07-a79a63aca19c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_abbef641-c60b-41fe-b19e-c93e3ff005a3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_OperatingLeaseLiability_abbef641-c60b-41fe-b19e-c93e3ff005a3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_01d71e2b-bf47-4a87-a65a-342b0c4be97f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxesPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_01d71e2b-bf47-4a87-a65a-342b0c4be97f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_7d783ac9-3668-40bd-a7df-e35004e2ce4c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_7d783ac9-3668-40bd-a7df-e35004e2ce4c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_197a1d31-b166-449b-bae0-ef3a449f3729" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_197a1d31-b166-449b-bae0-ef3a449f3729" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_d71b8f75-6ae0-49a4-b446-9d05880f54e4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_17a560ba-2349-4719-b447-44a0673744a7" xlink:to="loc_us-gaap_Liabilities_d71b8f75-6ae0-49a4-b446-9d05880f54e4" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_db763085-e148-4a3c-92a7-53f5e6a5f3a1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a375e764-eec1-4aac-ada7-cfd7b92b36e5" xlink:to="loc_us-gaap_CommitmentsAndContingencies_db763085-e148-4a3c-92a7-53f5e6a5f3a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_aadc0cc7-4292-4798-a671-7f8723cb46b7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a375e764-eec1-4aac-ada7-cfd7b92b36e5" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_aadc0cc7-4292-4798-a671-7f8723cb46b7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a375e764-eec1-4aac-ada7-cfd7b92b36e5" xlink:to="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_18d6d67e-75f5-4d8b-83b4-450c2e3004f3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_CommonStockValue_18d6d67e-75f5-4d8b-83b4-450c2e3004f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_9b74a09f-18b6-44df-9645-58a6aedb039d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_PreferredStockValue_9b74a09f-18b6-44df-9645-58a6aedb039d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_c2dfc516-3ced-4123-9546-8b28c74553de" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_c2dfc516-3ced-4123-9546-8b28c74553de" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_9edbfe14-4fa2-4843-acf0-c6f6a27856e4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_9edbfe14-4fa2-4843-acf0-c6f6a27856e4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_a2bff4d9-965f-4752-b3c5-327e614594c3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_a2bff4d9-965f-4752-b3c5-327e614594c3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_393c76e8-17a3-48e5-b33d-028b00801af1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_TreasuryStockValue_393c76e8-17a3-48e5-b33d-028b00801af1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_bb4f4931-78ff-42dd-befc-cc2e81fd9239" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_StockholdersEquity_bb4f4931-78ff-42dd-befc-cc2e81fd9239" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_2225b98b-5e26-4908-931d-787f8ba0ce67" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_MinorityInterest_2225b98b-5e26-4908-931d-787f8ba0ce67" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_949cd2db-cc19-47da-927d-707521fe7866" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f81ecc11-1ddd-4108-a928-8eaa5e4e2a40" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_949cd2db-cc19-47da-927d-707521fe7866" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_185240eb-75a6-4dee-bd2a-f1c6a86a391f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a375e764-eec1-4aac-ada7-cfd7b92b36e5" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_185240eb-75a6-4dee-bd2a-f1c6a86a391f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_195de1ac-fb4d-461d-a175-0c692be78d9c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_5f07c427-e560-45fd-a828-527a72b35720" xlink:to="loc_us-gaap_StatementTable_195de1ac-fb4d-461d-a175-0c692be78d9c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_23db3a78-04da-4ce3-bef5-2bdba5424cd4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_195de1ac-fb4d-461d-a175-0c692be78d9c" xlink:to="loc_us-gaap_FinancialInstrumentAxis_23db3a78-04da-4ce3-bef5-2bdba5424cd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_23db3a78-04da-4ce3-bef5-2bdba5424cd4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_23db3a78-04da-4ce3-bef5-2bdba5424cd4" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_23db3a78-04da-4ce3-bef5-2bdba5424cd4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_93868a06-8792-4e1f-9d39-eb760bc39777" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_23db3a78-04da-4ce3-bef5-2bdba5424cd4" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_93868a06-8792-4e1f-9d39-eb760bc39777" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_e5733626-9cf4-44bd-a1dd-f8c56c929ba0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_93868a06-8792-4e1f-9d39-eb760bc39777" xlink:to="loc_us-gaap_PreferredStockMember_e5733626-9cf4-44bd-a1dd-f8c56c929ba0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_af820539-fc48-42e9-8e78-2848650919d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_93868a06-8792-4e1f-9d39-eb760bc39777" xlink:to="loc_us-gaap_EquitySecuritiesMember_af820539-fc48-42e9-8e78-2848650919d8" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="simple" xlink:href="fnf-20201231.xsd#CONSOLIDATEDBALANCESHEETSParenthetical"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="extended" id="ic5fc3d2630f44a669050bf3e6f4321e6_CONSOLIDATEDBALANCESHEETSParenthetical"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFEARNINGS" xlink:type="simple" xlink:href="fnf-20201231.xsd#CONSOLIDATEDSTATEMENTSOFEARNINGS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFEARNINGS" xlink:type="extended" id="i5c28dc8edbb8483a91654803674f1fa7_CONSOLIDATEDSTATEMENTSOFEARNINGS"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS" xlink:type="simple" xlink:href="fnf-20201231.xsd#CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS" xlink:type="extended" id="iebc9274dca88422d8f34c87796b27d5f_CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical" xlink:type="simple" xlink:href="fnf-20201231.xsd#CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical" xlink:type="extended" id="i046defd468594dfaba6bf6e87fcb75dc_CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="simple" xlink:href="fnf-20201231.xsd#CONSOLIDATEDSTATEMENTSOFEQUITY"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="extended" id="i9c96579ff0824bc7bb92f0da02a1a04e_CONSOLIDATEDSTATEMENTSOFEQUITY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_9e73deac-a653-4d12-8c99-5e0c255bc74e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e73deac-a653-4d12-8c99-5e0c255bc74e" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_4a54a8e8-4087-4cf5-aed3-07567eebad19" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_4a54a8e8-4087-4cf5-aed3-07567eebad19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_ff5826d6-83b4-43bd-b805-69bf0fa91693" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_SharesIssued_ff5826d6-83b4-43bd-b805-69bf0fa91693" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdateExtensibleList_8a1e86e9-619e-44d7-a677-f10537a0de7c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdateExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_AccountingStandardsUpdateExtensibleList_8a1e86e9-619e-44d7-a677-f10537a0de7c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_fee93a4b-edf9-4e2e-a284-7e3a093927ff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_fee93a4b-edf9-4e2e-a284-7e3a093927ff" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_ebd463b5-9f64-4b9a-bd95-4354dc9b4808" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_ebd463b5-9f64-4b9a-bd95-4354dc9b4808" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_98cf5ac6-bd09-4a52-805a-d86bbaa8e5f2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_98cf5ac6-bd09-4a52-805a-d86bbaa8e5f2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_4ad644b9-4580-41cc-996e-c117f3763dc1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_4ad644b9-4580-41cc-996e-c117f3763dc1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_d6fb03b5-1047-45e9-9b55-873e4d9b977f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_d6fb03b5-1047-45e9-9b55-873e4d9b977f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_0aa1a496-0f3b-44c7-8047-06f305318230" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_0aa1a496-0f3b-44c7-8047-06f305318230" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnEquityMethodInvestmentsArisingDuringPeriodNetOfTax_a46cdb12-a58f-4f1d-9dcc-22824a0a4452" xlink:href="fnf-20201231.xsd#fnf_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnEquityMethodInvestmentsArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_fnf_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnEquityMethodInvestmentsArisingDuringPeriodNetOfTax_a46cdb12-a58f-4f1d-9dcc-22824a0a4452" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_6356109b-b35c-4ee0-9261-6cf829610cde" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_6356109b-b35c-4ee0-9261-6cf829610cde" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_25488da5-3300-423b-bb37-91f61d237626" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_25488da5-3300-423b-bb37-91f61d237626" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_7ef0de0b-2914-4f6c-b24e-98e49a8465d6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_7ef0de0b-2914-4f6c-b24e-98e49a8465d6" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_2fc12570-1277-4524-8317-016d48b6e84b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_2fc12570-1277-4524-8317-016d48b6e84b" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AdjustmentsToAdditionalPaidinCapitalPurchaseOfAdditionalShareInNoncontrollingInterests_d96e899a-4d4e-49e2-ba2d-2eac17687b4d" xlink:href="fnf-20201231.xsd#fnf_AdjustmentsToAdditionalPaidinCapitalPurchaseOfAdditionalShareInNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_fnf_AdjustmentsToAdditionalPaidinCapitalPurchaseOfAdditionalShareInNoncontrollingInterests_d96e899a-4d4e-49e2-ba2d-2eac17687b4d" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TreasuryStockValueWithheldForTaxesCostMethod_d4b8a920-9fcb-451b-873c-777c8015ae10" xlink:href="fnf-20201231.xsd#fnf_TreasuryStockValueWithheldForTaxesCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_fnf_TreasuryStockValueWithheldForTaxesCostMethod_d4b8a920-9fcb-451b-873c-777c8015ae10" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TreasuryStockValueWithheldforTaxesCostMethodShares_c23e59fa-d851-434f-b862-eb1c19021210" xlink:href="fnf-20201231.xsd#fnf_TreasuryStockValueWithheldforTaxesCostMethodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_fnf_TreasuryStockValueWithheldforTaxesCostMethodShares_c23e59fa-d851-434f-b862-eb1c19021210" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments_cd28fb55-de26-490b-b250-bf7e619684db" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments_cd28fb55-de26-490b-b250-bf7e619684db" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_7dae48b4-5dd0-4e20-aff8-17032fefbd9b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_7dae48b4-5dd0-4e20-aff8-17032fefbd9b" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_e3b1d44a-de3b-4c19-991f-9da2df33c6e4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_DividendsCommonStockCash_e3b1d44a-de3b-4c19-991f-9da2df33c6e4" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_d66ef470-ba6d-45af-8a9c-6a35fd41928f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_d66ef470-ba6d-45af-8a9c-6a35fd41928f" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation_75302f6f-080b-445b-8f57-f583868f5e47" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation_75302f6f-080b-445b-8f57-f583868f5e47" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityOther_28324669-5891-4a89-86c7-e63afb525e38" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_StockholdersEquityOther_28324669-5891-4a89-86c7-e63afb525e38" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_b0475eb4-ae75-4216-8c47-795cdacde2df" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_b0475eb4-ae75-4216-8c47-795cdacde2df" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_5cfadf54-0c95-4baf-8086-bfc1c6f4642a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_5cfadf54-0c95-4baf-8086-bfc1c6f4642a" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax_2dd3a37c-464e-4a38-848e-759f166e85bf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax_2dd3a37c-464e-4a38-848e-759f166e85bf" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_8fd04b2d-cfef-4f9a-95fc-7a19857984b5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_259918ea-8ff3-4693-9d31-08560808993f" xlink:to="loc_us-gaap_ProfitLoss_8fd04b2d-cfef-4f9a-95fc-7a19857984b5" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_37b8a9ab-c3f6-4955-8597-4a50d033029e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_36eb5c87-9e0d-4a30-a2c4-5a165273e564" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharesIssued"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_049bee88-f520-48a5-876a-061cba4ae291" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInTemporaryEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e73deac-a653-4d12-8c99-5e0c255bc74e" xlink:to="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_049bee88-f520-48a5-876a-061cba4ae291" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_3ff04b6a-7ef2-4d06-89ee-6d4baff9a1bb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_049bee88-f520-48a5-876a-061cba4ae291" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_3ff04b6a-7ef2-4d06-89ee-6d4baff9a1bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TemporaryEquityNoncontrollingInterestDecreaseFromRedemptionsOrPurchaseOfInterests_93053f97-f361-4ad3-99ab-c46d2b6006fd" xlink:href="fnf-20201231.xsd#fnf_TemporaryEquityNoncontrollingInterestDecreaseFromRedemptionsOrPurchaseOfInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_049bee88-f520-48a5-876a-061cba4ae291" xlink:to="loc_fnf_TemporaryEquityNoncontrollingInterestDecreaseFromRedemptionsOrPurchaseOfInterests_93053f97-f361-4ad3-99ab-c46d2b6006fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_f94ad743-68b7-48b7-9979-56f9de90d059" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_a4f601a1-7f2e-43fe-b771-fa198464454f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_9e73deac-a653-4d12-8c99-5e0c255bc74e" xlink:to="loc_us-gaap_StatementTable_a4f601a1-7f2e-43fe-b771-fa198464454f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_858980e7-1ad9-4e90-b310-cc7cf177dff9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_a4f601a1-7f2e-43fe-b771-fa198464454f" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_858980e7-1ad9-4e90-b310-cc7cf177dff9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_858980e7-1ad9-4e90-b310-cc7cf177dff9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_858980e7-1ad9-4e90-b310-cc7cf177dff9" xlink:to="loc_us-gaap_EquityComponentDomain_858980e7-1ad9-4e90-b310-cc7cf177dff9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_858980e7-1ad9-4e90-b310-cc7cf177dff9" xlink:to="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_54a5d2e2-5cc6-4319-aeb7-f9c2ca0452a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:to="loc_us-gaap_CommonStockMember_54a5d2e2-5cc6-4319-aeb7-f9c2ca0452a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_ee021b12-b496-4c98-8bc1-ee643e621ea0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_ee021b12-b496-4c98-8bc1-ee643e621ea0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_87eaa7c9-d929-4342-925f-fbe5c9c82bd2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:to="loc_us-gaap_RetainedEarningsMember_87eaa7c9-d929-4342-925f-fbe5c9c82bd2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_d763b57e-b5ec-431b-aee3-002dac4c442d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_d763b57e-b5ec-431b-aee3-002dac4c442d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockMember_19bfb8a3-b16d-4fe9-9efa-0f4d0c505893" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:to="loc_us-gaap_TreasuryStockMember_19bfb8a3-b16d-4fe9-9efa-0f4d0c505893" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_9bf71c76-6244-4d0a-a12d-682e593eed95" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b065890-2c50-4da8-aa1f-5426f919df5c" xlink:to="loc_us-gaap_NoncontrollingInterestMember_9bf71c76-6244-4d0a-a12d-682e593eed95" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f7a650bc-017e-44a4-9554-51c069a019c0" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_a4f601a1-7f2e-43fe-b771-fa198464454f" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f7a650bc-017e-44a4-9554-51c069a019c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_f7a650bc-017e-44a4-9554-51c069a019c0_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f7a650bc-017e-44a4-9554-51c069a019c0" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_f7a650bc-017e-44a4-9554-51c069a019c0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_c9a199f0-1531-42c2-8484-722427c06735" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f7a650bc-017e-44a4-9554-51c069a019c0" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_c9a199f0-1531-42c2-8484-722427c06735" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_94ffb7f5-a677-454d-8ba3-a6218108b3cb" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_c9a199f0-1531-42c2-8484-722427c06735" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_94ffb7f5-a677-454d-8ba3-a6218108b3cb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="fnf-20201231.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended" id="iaef252d2cdb2497eb95b5d781da5e66c_CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPolicies" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPolicies"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPolicies" xlink:type="extended" id="ie82a8f86843b4302a3870796af24b9dd_BusinessandSummaryofSignificantAccountingPolicies"/>
  <link:roleRef roleURI="http://www.fnf.com/role/AccountingPoliciesTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#AccountingPoliciesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AccountingPoliciesTables" xlink:type="extended" id="i6deb9bb615d7409fb9c4d79a2ec81611_AccountingPoliciesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesPolicies"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesPolicies" xlink:type="extended" id="i546eae491f7a47ebbeb99433918230b1_BusinessandSummaryofSignificantAccountingPoliciesPolicies"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesRecentDevelopmentsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesRecentDevelopmentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesRecentDevelopmentsDetails" xlink:type="extended" id="i393802c7779a4a8b87076abb49858acc_BusinessandSummaryofSignificantAccountingPoliciesRecentDevelopmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementsInvestmentCommitment_3feb4ce5-eccf-407c-a41f-827779b0139c" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementsInvestmentCommitment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_fnf_SubscriptionAgreementsInvestmentCommitment_3feb4ce5-eccf-407c-a41f-827779b0139c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementCommitmentToPurchaseCommonStockParValue_5668fe5a-2dca-43b3-b84d-9c8d2fa7ac66" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementCommitmentToPurchaseCommonStockParValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_fnf_SubscriptionAgreementCommitmentToPurchaseCommonStockParValue_5668fe5a-2dca-43b3-b84d-9c8d2fa7ac66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementCommitmentToPurchaseSharesSharePrice_9b7df669-7769-4297-aee2-79c8ccf816bc" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementCommitmentToPurchaseSharesSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_fnf_SubscriptionAgreementCommitmentToPurchaseSharesSharePrice_9b7df669-7769-4297-aee2-79c8ccf816bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementOwnershipInterestAfterPurchasePercent_890a8b79-ca64-43bf-955d-7309adda1e8d" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementOwnershipInterestAfterPurchasePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_fnf_SubscriptionAgreementOwnershipInterestAfterPurchasePercent_890a8b79-ca64-43bf-955d-7309adda1e8d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriberFeeFromInvesteePurchasePricePercentage_0f3a12f3-fdd2-4f27-a30e-e1a5652c7703" xlink:href="fnf-20201231.xsd#fnf_SubscriberFeeFromInvesteePurchasePricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_fnf_SubscriberFeeFromInvesteePurchasePricePercentage_0f3a12f3-fdd2-4f27-a30e-e1a5652c7703" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_0bc27100-d39c-4810-83e1-3178ae8c4251" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_0bc27100-d39c-4810-83e1-3178ae8c4251" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_6fc422fe-2e29-440a-9c9f-136763f4d696" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_GainLossOnInvestments_6fc422fe-2e29-440a-9c9f-136763f4d696" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LineOfCreditFacilityTerminated_5ccd7deb-8118-45a7-9093-f7aa37207802" xlink:href="fnf-20201231.xsd#fnf_LineOfCreditFacilityTerminated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_fnf_LineOfCreditFacilityTerminated_5ccd7deb-8118-45a7-9093-f7aa37207802" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1841e3ff-947b-4235-8224-78889acfca83" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1841e3ff-947b-4235-8224-78889acfca83" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_231c7e44-4ae7-412b-aadc-ef88f21132cc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_231c7e44-4ae7-412b-aadc-ef88f21132cc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_5c0058fe-9c54-4ffb-acc3-c14f33731c31" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_5c0058fe-9c54-4ffb-acc3-c14f33731c31" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_73c3ebba-aa55-4c54-b061-8ec0ed2e4fd9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_73c3ebba-aa55-4c54-b061-8ec0ed2e4fd9" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_3698708c-c4bf-4bce-80fc-0e24f56c68cd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_3698708c-c4bf-4bce-80fc-0e24f56c68cd" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_28e56b90-514b-4d0d-b5d9-84680f0e7f0d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_28e56b90-514b-4d0d-b5d9-84680f0e7f0d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_f857aaaa-13f6-4079-bb12-0fea309add47" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_f857aaaa-13f6-4079-bb12-0fea309add47" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_aba8c874-3991-4b4b-8eaa-2c4364f94705" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_aba8c874-3991-4b4b-8eaa-2c4364f94705" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_21cd4eef-5aaa-413c-beb7-57dd4936daef" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_efb31afa-eb7c-4432-b0c5-48dcaad2a5fe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_efb31afa-eb7c-4432-b0c5-48dcaad2a5fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_efb31afa-eb7c-4432-b0c5-48dcaad2a5fe_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_efb31afa-eb7c-4432-b0c5-48dcaad2a5fe" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_efb31afa-eb7c-4432-b0c5-48dcaad2a5fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_68457461-17ed-4314-afb0-6bef4f4fdf22" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_efb31afa-eb7c-4432-b0c5-48dcaad2a5fe" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_68457461-17ed-4314-afb0-6bef4f4fdf22" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_26ac0254-fc38-4ddc-b930-4c6ade742fda" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_68457461-17ed-4314-afb0-6bef4f4fdf22" xlink:to="loc_us-gaap_SubsequentEventMember_26ac0254-fc38-4ddc-b930-4c6ade742fda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_7e89278b-0b1e-46cb-956d-041486385dbc" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_srt_StatementScenarioAxis_7e89278b-0b1e-46cb-956d-041486385dbc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_7e89278b-0b1e-46cb-956d-041486385dbc_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_7e89278b-0b1e-46cb-956d-041486385dbc" xlink:to="loc_srt_ScenarioUnspecifiedDomain_7e89278b-0b1e-46cb-956d-041486385dbc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_8954415f-b2e5-40eb-8f21-285788c211c8" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_7e89278b-0b1e-46cb-956d-041486385dbc" xlink:to="loc_srt_ScenarioUnspecifiedDomain_8954415f-b2e5-40eb-8f21-285788c211c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_b0d9e9aa-fe23-459c-b83b-b14371c7c093" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_8954415f-b2e5-40eb-8f21-285788c211c8" xlink:to="loc_srt_ScenarioForecastMember_b0d9e9aa-fe23-459c-b83b-b14371c7c093" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_9f410626-441d-4af6-a1b3-3fdfe77318b2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_us-gaap_OtherCommitmentsAxis_9f410626-441d-4af6-a1b3-3fdfe77318b2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_9f410626-441d-4af6-a1b3-3fdfe77318b2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_9f410626-441d-4af6-a1b3-3fdfe77318b2" xlink:to="loc_us-gaap_OtherCommitmentsDomain_9f410626-441d-4af6-a1b3-3fdfe77318b2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_879f967b-5554-4701-83b4-9e5f8b7b4c6a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_9f410626-441d-4af6-a1b3-3fdfe77318b2" xlink:to="loc_us-gaap_OtherCommitmentsDomain_879f967b-5554-4701-83b4-9e5f8b7b4c6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementsWithAlightHoldingsIncAndFoleyTrasimeneAcquisitionCorpMember_7e8f5d47-1edc-4b38-85f8-7bf6be12d6d3" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementsWithAlightHoldingsIncAndFoleyTrasimeneAcquisitionCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_879f967b-5554-4701-83b4-9e5f8b7b4c6a" xlink:to="loc_fnf_SubscriptionAgreementsWithAlightHoldingsIncAndFoleyTrasimeneAcquisitionCorpMember_7e8f5d47-1edc-4b38-85f8-7bf6be12d6d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementsSubscriptionAgreementsWithPaysafeLimitedAndFoleyTrasimeneAcquisitionCorpIIMember_e852faf1-224a-4e9f-a368-fa3172d66393" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementsSubscriptionAgreementsWithPaysafeLimitedAndFoleyTrasimeneAcquisitionCorpIIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_879f967b-5554-4701-83b4-9e5f8b7b4c6a" xlink:to="loc_fnf_SubscriptionAgreementsSubscriptionAgreementsWithPaysafeLimitedAndFoleyTrasimeneAcquisitionCorpIIMember_e852faf1-224a-4e9f-a368-fa3172d66393" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4f720649-5365-4c75-83c6-3d7ae4194942" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4f720649-5365-4c75-83c6-3d7ae4194942" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_4f720649-5365-4c75-83c6-3d7ae4194942_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4f720649-5365-4c75-83c6-3d7ae4194942" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_4f720649-5365-4c75-83c6-3d7ae4194942_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_8e97b51d-ee5d-47b4-907f-5d5a027ee87c" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4f720649-5365-4c75-83c6-3d7ae4194942" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_8e97b51d-ee5d-47b4-907f-5d5a027ee87c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AlightMember_863cb57d-478e-4681-9102-92b536662e8f" xlink:href="fnf-20201231.xsd#fnf_AlightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_8e97b51d-ee5d-47b4-907f-5d5a027ee87c" xlink:to="loc_fnf_AlightMember_863cb57d-478e-4681-9102-92b536662e8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PaysafeLimitedMember_63061b96-cf25-420c-8980-f9dd8eda73b7" xlink:href="fnf-20201231.xsd#fnf_PaysafeLimitedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_8e97b51d-ee5d-47b4-907f-5d5a027ee87c" xlink:to="loc_fnf_PaysafeLimitedMember_63061b96-cf25-420c-8980-f9dd8eda73b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_d5798018-4461-472c-89bd-740653bad16e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_d5798018-4461-472c-89bd-740653bad16e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d5798018-4461-472c-89bd-740653bad16e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_d5798018-4461-472c-89bd-740653bad16e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d5798018-4461-472c-89bd-740653bad16e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e9a9c8fa-9323-4c48-888f-f7f363c4cb8c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_d5798018-4461-472c-89bd-740653bad16e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e9a9c8fa-9323-4c48-888f-f7f363c4cb8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGLHoldingsMember_3b9bffad-bacf-4dbd-9e20-102758b6ea04" xlink:href="fnf-20201231.xsd#fnf_FGLHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e9a9c8fa-9323-4c48-888f-f7f363c4cb8c" xlink:to="loc_fnf_FGLHoldingsMember_3b9bffad-bacf-4dbd-9e20-102758b6ea04" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_e02ecfa8-b980-4131-bc72-863a4e7812d7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_us-gaap_CreditFacilityAxis_e02ecfa8-b980-4131-bc72-863a4e7812d7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_e02ecfa8-b980-4131-bc72-863a4e7812d7_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_e02ecfa8-b980-4131-bc72-863a4e7812d7" xlink:to="loc_us-gaap_CreditFacilityDomain_e02ecfa8-b980-4131-bc72-863a4e7812d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_37e1c902-b7cb-48db-b8b4-d3d3fd81cf13" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_e02ecfa8-b980-4131-bc72-863a4e7812d7" xlink:to="loc_us-gaap_CreditFacilityDomain_37e1c902-b7cb-48db-b8b4-d3d3fd81cf13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_47f43233-9bb7-41ab-bc7e-5d58a16a8947" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_37e1c902-b7cb-48db-b8b4-d3d3fd81cf13" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_47f43233-9bb7-41ab-bc7e-5d58a16a8947" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_d9e8c67d-d50e-4721-84bd-6be63fb6ab89" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_us-gaap_DebtInstrumentAxis_d9e8c67d-d50e-4721-84bd-6be63fb6ab89" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d9e8c67d-d50e-4721-84bd-6be63fb6ab89_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_d9e8c67d-d50e-4721-84bd-6be63fb6ab89" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d9e8c67d-d50e-4721-84bd-6be63fb6ab89_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_633bb82a-975c-4f2a-9505-f6e5569a11eb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_d9e8c67d-d50e-4721-84bd-6be63fb6ab89" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_633bb82a-975c-4f2a-9505-f6e5569a11eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AmendedRevolvingCreditFacilityToOctober2025Member_61a98d94-3285-42ab-a332-14f658ce44cf" xlink:href="fnf-20201231.xsd#fnf_AmendedRevolvingCreditFacilityToOctober2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_633bb82a-975c-4f2a-9505-f6e5569a11eb" xlink:to="loc_fnf_AmendedRevolvingCreditFacilityToOctober2025Member_61a98d94-3285-42ab-a332-14f658ce44cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A245SeniorNotesDueMarch2031Member_f9349340-ee75-4123-bfaf-6b02da50cda9" xlink:href="fnf-20201231.xsd#fnf_A245SeniorNotesDueMarch2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_633bb82a-975c-4f2a-9505-f6e5569a11eb" xlink:to="loc_fnf_A245SeniorNotesDueMarch2031Member_f9349340-ee75-4123-bfaf-6b02da50cda9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanCreditAgreementMember_aafebcfc-fce7-457b-ac17-7ecf02efbe40" xlink:href="fnf-20201231.xsd#fnf_TermLoanCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_633bb82a-975c-4f2a-9505-f6e5569a11eb" xlink:to="loc_fnf_TermLoanCreditAgreementMember_aafebcfc-fce7-457b-ac17-7ecf02efbe40" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A340NotesDueJune152030Member_48009ecf-8f3d-4f7e-81be-9d1e458d7a65" xlink:href="fnf-20201231.xsd#fnf_A340NotesDueJune152030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_633bb82a-975c-4f2a-9505-f6e5569a11eb" xlink:to="loc_fnf_A340NotesDueJune152030Member_48009ecf-8f3d-4f7e-81be-9d1e458d7a65" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2f37f9d4-637a-4c7d-8b79-6fd7b7ad7e1e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aabfceac-5d48-4c7a-a065-fb6a1bb2c48b" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2f37f9d4-637a-4c7d-8b79-6fd7b7ad7e1e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2f37f9d4-637a-4c7d-8b79-6fd7b7ad7e1e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2f37f9d4-637a-4c7d-8b79-6fd7b7ad7e1e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2f37f9d4-637a-4c7d-8b79-6fd7b7ad7e1e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_848bd8e8-3325-4cf8-9818-8165cb6c6d4e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2f37f9d4-637a-4c7d-8b79-6fd7b7ad7e1e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_848bd8e8-3325-4cf8-9818-8165cb6c6d4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_f3447344-be5c-47a5-96c5-ade6f38ae200" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_848bd8e8-3325-4cf8-9818-8165cb6c6d4e" xlink:to="loc_us-gaap_LineOfCreditMember_f3447344-be5c-47a5-96c5-ade6f38ae200" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanMember_967dd7c4-d16e-4515-98c9-3b96e3db51b2" xlink:href="fnf-20201231.xsd#fnf_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_848bd8e8-3325-4cf8-9818-8165cb6c6d4e" xlink:to="loc_fnf_TermLoanMember_967dd7c4-d16e-4515-98c9-3b96e3db51b2" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesTradeandNotesReceivableDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesTradeandNotesReceivableDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesTradeandNotesReceivableDetails" xlink:type="extended" id="i8aa7b800fc5e44ba9358d2674bdb89aa_BusinessandSummaryofSignificantAccountingPoliciesTradeandNotesReceivableDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRecognitionMilestoneMethodLineItems_611a0759-778b-483b-a981-76060338ea63" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRecognitionMilestoneMethodLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AccrualforAgencyPremiumsTimeLagPeriod_fc894d21-2830-4aa8-8a42-7308e43d30f9" xlink:href="fnf-20201231.xsd#fnf_AccrualforAgencyPremiumsTimeLagPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRecognitionMilestoneMethodLineItems_611a0759-778b-483b-a981-76060338ea63" xlink:to="loc_fnf_AccrualforAgencyPremiumsTimeLagPeriod_fc894d21-2830-4aa8-8a42-7308e43d30f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AccrualforAgencyPremiumsPercentReportedwithin3Months_6acedd3a-e12c-4e33-a843-45bc2a7ec2fa" xlink:href="fnf-20201231.xsd#fnf_AccrualforAgencyPremiumsPercentReportedwithin3Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRecognitionMilestoneMethodLineItems_611a0759-778b-483b-a981-76060338ea63" xlink:to="loc_fnf_AccrualforAgencyPremiumsPercentReportedwithin3Months_6acedd3a-e12c-4e33-a843-45bc2a7ec2fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AccrualforAgencyPremiumsPercentReportedin46Months_a8a00ff3-d128-4e60-8a17-59009f65783a" xlink:href="fnf-20201231.xsd#fnf_AccrualforAgencyPremiumsPercentReportedin46Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRecognitionMilestoneMethodLineItems_611a0759-778b-483b-a981-76060338ea63" xlink:to="loc_fnf_AccrualforAgencyPremiumsPercentReportedin46Months_a8a00ff3-d128-4e60-8a17-59009f65783a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceCommissionsasPercentageofAgentPremiums_90253ab4-9edf-4706-acb0-f1420c521af4" xlink:href="fnf-20201231.xsd#fnf_InsuranceCommissionsasPercentageofAgentPremiums"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRecognitionMilestoneMethodLineItems_611a0759-778b-483b-a981-76060338ea63" xlink:to="loc_fnf_InsuranceCommissionsasPercentageofAgentPremiums_90253ab4-9edf-4706-acb0-f1420c521af4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PremiumsReceivableNetofAccruedSalesCommissions_68ba88e9-bbcf-4af6-977a-0bd4fb1f63dc" xlink:href="fnf-20201231.xsd#fnf_PremiumsReceivableNetofAccruedSalesCommissions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRecognitionMilestoneMethodLineItems_611a0759-778b-483b-a981-76060338ea63" xlink:to="loc_fnf_PremiumsReceivableNetofAccruedSalesCommissions_68ba88e9-bbcf-4af6-977a-0bd4fb1f63dc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRecognitionMilestoneMethodTable_ed568099-7e12-43e9-9ed8-c7e67953764f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRecognitionMilestoneMethodTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRecognitionMilestoneMethodLineItems_611a0759-778b-483b-a981-76060338ea63" xlink:to="loc_us-gaap_RevenueRecognitionMilestoneMethodTable_ed568099-7e12-43e9-9ed8-c7e67953764f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_4ba14a72-aa43-445b-ab1a-ee67adeb6fa4" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRecognitionMilestoneMethodTable_ed568099-7e12-43e9-9ed8-c7e67953764f" xlink:to="loc_srt_RangeAxis_4ba14a72-aa43-445b-ab1a-ee67adeb6fa4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4ba14a72-aa43-445b-ab1a-ee67adeb6fa4_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_4ba14a72-aa43-445b-ab1a-ee67adeb6fa4" xlink:to="loc_srt_RangeMember_4ba14a72-aa43-445b-ab1a-ee67adeb6fa4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5073f838-1ee9-4fc8-bead-b67956f370f2" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_4ba14a72-aa43-445b-ab1a-ee67adeb6fa4" xlink:to="loc_srt_RangeMember_5073f838-1ee9-4fc8-bead-b67956f370f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_85f9de8d-7223-4d77-a1d3-b06505bf206e" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5073f838-1ee9-4fc8-bead-b67956f370f2" xlink:to="loc_srt_MinimumMember_85f9de8d-7223-4d77-a1d3-b06505bf206e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_40c10092-3041-4c83-ab81-b1e51889e5ec" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5073f838-1ee9-4fc8-bead-b67956f370f2" xlink:to="loc_srt_MaximumMember_40c10092-3041-4c83-ab81-b1e51889e5ec" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesGoodwillIntangibleAssetsandPropertyandEquipmentDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesGoodwillIntangibleAssetsandPropertyandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesGoodwillIntangibleAssetsandPropertyandEquipmentDetails" xlink:type="extended" id="i19c5fa741d0940fba8eedac445101e3b_BusinessandSummaryofSignificantAccountingPoliciesGoodwillIntangibleAssetsandPropertyandEquipmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_e3a8a544-d9f7-481e-9b31-e2bf90a02d04" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_e3a8a544-d9f7-481e-9b31-e2bf90a02d04" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_edca3961-ecc6-4b38-8ccd-548785016bdb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_edca3961-ecc6-4b38-8ccd-548785016bdb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_975b99d0-3c7e-47da-bc97-db5bd31a4ea9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_975b99d0-3c7e-47da-bc97-db5bd31a4ea9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_a7f2ac71-3945-4cc2-b4bd-330fd489bbf1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_a7f2ac71-3945-4cc2-b4bd-330fd489bbf1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_933419ab-7df2-4cd3-843d-6a8af82db211" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_933419ab-7df2-4cd3-843d-6a8af82db211" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NumberOfTitlePlants_d8b13606-0b9e-4b80-8371-5ff024b8781d" xlink:href="fnf-20201231.xsd#fnf_NumberOfTitlePlants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_fnf_NumberOfTitlePlants_d8b13606-0b9e-4b80-8371-5ff024b8781d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives_3fe866b4-8851-4f02-837e-31efc78bfd69" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives_3fe866b4-8851-4f02-837e-31efc78bfd69" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_f7997cd4-817b-4c51-8fd5-948cf6deda73" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_c1bafacd-0e90-427c-92f1-4c34d0159f61" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_f7997cd4-817b-4c51-8fd5-948cf6deda73" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_6b144b0e-bb2c-4a3b-b71b-0449c078109c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_f7997cd4-817b-4c51-8fd5-948cf6deda73" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_6b144b0e-bb2c-4a3b-b71b-0449c078109c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6b144b0e-bb2c-4a3b-b71b-0449c078109c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6b144b0e-bb2c-4a3b-b71b-0449c078109c" xlink:to="loc_us-gaap_SegmentDomain_6b144b0e-bb2c-4a3b-b71b-0449c078109c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_81fa2a70-6a0f-43aa-8230-272a1f42c7ce" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6b144b0e-bb2c-4a3b-b71b-0449c078109c" xlink:to="loc_us-gaap_SegmentDomain_81fa2a70-6a0f-43aa-8230-272a1f42c7ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CorporateAndReconcilingItemsMember_db6b3018-099f-4536-904c-dd0b2ca6648d" xlink:href="fnf-20201231.xsd#fnf_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_81fa2a70-6a0f-43aa-8230-272a1f42c7ce" xlink:to="loc_fnf_CorporateAndReconcilingItemsMember_db6b3018-099f-4536-904c-dd0b2ca6648d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b12f459f-492a-4d69-8e48-1a669bdc8a2b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_f7997cd4-817b-4c51-8fd5-948cf6deda73" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b12f459f-492a-4d69-8e48-1a669bdc8a2b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b12f459f-492a-4d69-8e48-1a669bdc8a2b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b12f459f-492a-4d69-8e48-1a669bdc8a2b" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b12f459f-492a-4d69-8e48-1a669bdc8a2b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_80c10211-3139-456d-8443-0ee59afa5491" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b12f459f-492a-4d69-8e48-1a669bdc8a2b" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_80c10211-3139-456d-8443-0ee59afa5491" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_04055e5b-46d5-4481-95a4-88891ae63811" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_80c10211-3139-456d-8443-0ee59afa5491" xlink:to="loc_us-gaap_CustomerRelationshipsMember_04055e5b-46d5-4481-95a4-88891ae63811" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_aaff4479-3857-4417-ad9c-6860b61804ba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_80c10211-3139-456d-8443-0ee59afa5491" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_aaff4479-3857-4417-ad9c-6860b61804ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SoftwareMember_a0af5e34-e28a-491c-909d-5dba9a7d1cc5" xlink:href="fnf-20201231.xsd#fnf_SoftwareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_80c10211-3139-456d-8443-0ee59afa5491" xlink:to="loc_fnf_SoftwareMember_a0af5e34-e28a-491c-909d-5dba9a7d1cc5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_60f7e6fc-1efb-4e23-9818-b0a43f51e9be" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_f7997cd4-817b-4c51-8fd5-948cf6deda73" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_60f7e6fc-1efb-4e23-9818-b0a43f51e9be" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_60f7e6fc-1efb-4e23-9818-b0a43f51e9be_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_60f7e6fc-1efb-4e23-9818-b0a43f51e9be" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_60f7e6fc-1efb-4e23-9818-b0a43f51e9be_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_8b12c7f1-980b-4e8f-9eba-a94f35e29026" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_60f7e6fc-1efb-4e23-9818-b0a43f51e9be" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_8b12c7f1-980b-4e8f-9eba-a94f35e29026" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitlePlantMember_1aacccb8-c607-4ea3-9af7-453e217cde2c" xlink:href="fnf-20201231.xsd#fnf_TitlePlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_8b12c7f1-980b-4e8f-9eba-a94f35e29026" xlink:to="loc_fnf_TitlePlantMember_1aacccb8-c607-4ea3-9af7-453e217cde2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e570b2d8-e9a0-43d8-8add-c65caa0c2c70" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_f7997cd4-817b-4c51-8fd5-948cf6deda73" xlink:to="loc_srt_RangeAxis_e570b2d8-e9a0-43d8-8add-c65caa0c2c70" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e570b2d8-e9a0-43d8-8add-c65caa0c2c70_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e570b2d8-e9a0-43d8-8add-c65caa0c2c70" xlink:to="loc_srt_RangeMember_e570b2d8-e9a0-43d8-8add-c65caa0c2c70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_37b55714-25f6-4717-b522-aae804b75cdd" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e570b2d8-e9a0-43d8-8add-c65caa0c2c70" xlink:to="loc_srt_RangeMember_37b55714-25f6-4717-b522-aae804b75cdd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_e9db0597-c59a-4819-a7ab-4c1c803afe1e" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_37b55714-25f6-4717-b522-aae804b75cdd" xlink:to="loc_srt_MinimumMember_e9db0597-c59a-4819-a7ab-4c1c803afe1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5a6cd849-9d8e-46d5-81f5-7c8e90d679ed" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_37b55714-25f6-4717-b522-aae804b75cdd" xlink:to="loc_srt_MaximumMember_5a6cd849-9d8e-46d5-81f5-7c8e90d679ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24f81286-f9cf-463b-8554-201a4a06d68a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_f7997cd4-817b-4c51-8fd5-948cf6deda73" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24f81286-f9cf-463b-8554-201a4a06d68a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_24f81286-f9cf-463b-8554-201a4a06d68a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24f81286-f9cf-463b-8554-201a4a06d68a" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_24f81286-f9cf-463b-8554-201a4a06d68a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2ca8895d-df2d-4c6b-b6ae-f0401bfdbcdc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_24f81286-f9cf-463b-8554-201a4a06d68a" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2ca8895d-df2d-4c6b-b6ae-f0401bfdbcdc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_ff041082-581e-41e5-86b8-0ac972b8b02c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2ca8895d-df2d-4c6b-b6ae-f0401bfdbcdc" xlink:to="loc_us-gaap_BuildingMember_ff041082-581e-41e5-86b8-0ac972b8b02c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FurnitureFixtureAndEquipmentMember_3e6d2f6a-54bb-4d4a-8f19-e5ef516dd996" xlink:href="fnf-20201231.xsd#fnf_FurnitureFixtureAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2ca8895d-df2d-4c6b-b6ae-f0401bfdbcdc" xlink:to="loc_fnf_FurnitureFixtureAndEquipmentMember_3e6d2f6a-54bb-4d4a-8f19-e5ef516dd996" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesContractHolderFundsFuturePolicyBenefitsandSecuredTrustDepositsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesContractHolderFundsFuturePolicyBenefitsandSecuredTrustDepositsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesContractHolderFundsFuturePolicyBenefitsandSecuredTrustDepositsDetails" xlink:type="extended" id="i48c267fb03f84f0fa4e5a5ccf244bf20_BusinessandSummaryofSignificantAccountingPoliciesContractHolderFundsFuturePolicyBenefitsandSecuredTrustDepositsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskLineItems_c3ded441-5ca1-4ab7-9b1a-f06bf4530d6c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededCreditRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsLiability_e6f36db8-78bf-4fcd-a65a-38543615b86f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FundsHeldUnderReinsuranceAgreementsLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_c3ded441-5ca1-4ab7-9b1a-f06bf4530d6c" xlink:to="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsLiability_e6f36db8-78bf-4fcd-a65a-38543615b86f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsAsset_e4ca51f0-b077-4d65-bb6f-dba2f68400ca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FundsHeldUnderReinsuranceAgreementsAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_c3ded441-5ca1-4ab7-9b1a-f06bf4530d6c" xlink:to="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsAsset_e4ca51f0-b077-4d65-bb6f-dba2f68400ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongDurationContractsAssumptionsByProductAndGuaranteeEstimatedAverageInvestmentYield_356d538d-4f7d-4e96-a0b4-26bf06cb70a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongDurationContractsAssumptionsByProductAndGuaranteeEstimatedAverageInvestmentYield"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_c3ded441-5ca1-4ab7-9b1a-f06bf4530d6c" xlink:to="loc_us-gaap_LongDurationContractsAssumptionsByProductAndGuaranteeEstimatedAverageInvestmentYield_356d538d-4f7d-4e96-a0b4-26bf06cb70a9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ContractWithCustomerLiabilityCustomerDeposits_651bfeef-55e4-45ea-add5-6a51d68ca757" xlink:href="fnf-20201231.xsd#fnf_ContractWithCustomerLiabilityCustomerDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_c3ded441-5ca1-4ab7-9b1a-f06bf4530d6c" xlink:to="loc_fnf_ContractWithCustomerLiabilityCustomerDeposits_651bfeef-55e4-45ea-add5-6a51d68ca757" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskTable_f7affe1b-71e6-42e7-858e-23b97a573913" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededCreditRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CededCreditRiskLineItems_c3ded441-5ca1-4ab7-9b1a-f06bf4530d6c" xlink:to="loc_us-gaap_CededCreditRiskTable_f7affe1b-71e6-42e7-858e-23b97a573913" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis_5ba90cc7-53b0-4a89-a9d5-5423437c9048" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_f7affe1b-71e6-42e7-858e-23b97a573913" xlink:to="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis_5ba90cc7-53b0-4a89-a9d5-5423437c9048" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain_5ba90cc7-53b0-4a89-a9d5-5423437c9048_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis_5ba90cc7-53b0-4a89-a9d5-5423437c9048" xlink:to="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain_5ba90cc7-53b0-4a89-a9d5-5423437c9048_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain_34b61373-eb54-4050-bde3-ea4c0935cf7f" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis_5ba90cc7-53b0-4a89-a9d5-5423437c9048" xlink:to="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain_34b61373-eb54-4050-bde3-ea4c0935cf7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FederalHomeLoanBankOfAtlantaMember_9de24141-847b-44e4-a3b0-1313ecea125a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_FederalHomeLoanBankOfAtlantaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain_34b61373-eb54-4050-bde3-ea4c0935cf7f" xlink:to="loc_srt_FederalHomeLoanBankOfAtlantaMember_9de24141-847b-44e4-a3b0-1313ecea125a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_dfbeeadc-896d-4067-bd40-824567dae70f" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_f7affe1b-71e6-42e7-858e-23b97a573913" xlink:to="loc_srt_ProductOrServiceAxis_dfbeeadc-896d-4067-bd40-824567dae70f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_dfbeeadc-896d-4067-bd40-824567dae70f_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_dfbeeadc-896d-4067-bd40-824567dae70f" xlink:to="loc_srt_ProductsAndServicesDomain_dfbeeadc-896d-4067-bd40-824567dae70f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_31f4d80c-383e-400f-af53-d2fe5d7437c1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_dfbeeadc-896d-4067-bd40-824567dae70f" xlink:to="loc_srt_ProductsAndServicesDomain_31f4d80c-383e-400f-af53-d2fe5d7437c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_b560c322-d5f6-4e81-b80b-1e8b4fa756ef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LifeAndAnnuityInsuranceProductLineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_31f4d80c-383e-400f-af53-d2fe5d7437c1" xlink:to="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_b560c322-d5f6-4e81-b80b-1e8b4fa756ef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2569ccc1-a8dc-4bc6-85bc-552732d26cda" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_f7affe1b-71e6-42e7-858e-23b97a573913" xlink:to="loc_srt_RangeAxis_2569ccc1-a8dc-4bc6-85bc-552732d26cda" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2569ccc1-a8dc-4bc6-85bc-552732d26cda_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2569ccc1-a8dc-4bc6-85bc-552732d26cda" xlink:to="loc_srt_RangeMember_2569ccc1-a8dc-4bc6-85bc-552732d26cda_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d122dec7-ceb9-4c82-b203-5510beb5df48" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2569ccc1-a8dc-4bc6-85bc-552732d26cda" xlink:to="loc_srt_RangeMember_d122dec7-ceb9-4c82-b203-5510beb5df48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_0d738988-e4a9-40de-8488-806ee4dbe858" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d122dec7-ceb9-4c82-b203-5510beb5df48" xlink:to="loc_srt_MaximumMember_0d738988-e4a9-40de-8488-806ee4dbe858" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f6075907-8d52-4d4c-a839-2f1d564c9237" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d122dec7-ceb9-4c82-b203-5510beb5df48" xlink:to="loc_srt_MinimumMember_f6075907-8d52-4d4c-a839-2f1d564c9237" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesBenefitsandOtherChangesinPolicyReservesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesBenefitsandOtherChangesinPolicyReservesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesBenefitsandOtherChangesinPolicyReservesDetails" xlink:type="extended" id="i5e987887e63d484bbb4ce77d94d97fa9_BusinessandSummaryofSignificantAccountingPoliciesBenefitsandOtherChangesinPolicyReservesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskLineItems_ee6c7ada-d6bc-4e76-b058-134e1bf94654" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededCreditRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InterestCreditingRatesForFundsAtSubsidiaries_729d8aa8-75e3-4c55-a070-2e2d9385da64" xlink:href="fnf-20201231.xsd#fnf_InterestCreditingRatesForFundsAtSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_ee6c7ada-d6bc-4e76-b058-134e1bf94654" xlink:to="loc_fnf_InterestCreditingRatesForFundsAtSubsidiaries_729d8aa8-75e3-4c55-a070-2e2d9385da64" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskTable_4a89c87c-2ba2-49e1-871c-adb47243717b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededCreditRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CededCreditRiskLineItems_ee6c7ada-d6bc-4e76-b058-134e1bf94654" xlink:to="loc_us-gaap_CededCreditRiskTable_4a89c87c-2ba2-49e1-871c-adb47243717b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_1f2fed5a-c0c0-492c-9a77-7a9e6e2934ea" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_4a89c87c-2ba2-49e1-871c-adb47243717b" xlink:to="loc_srt_ProductOrServiceAxis_1f2fed5a-c0c0-492c-9a77-7a9e6e2934ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_1f2fed5a-c0c0-492c-9a77-7a9e6e2934ea_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_1f2fed5a-c0c0-492c-9a77-7a9e6e2934ea" xlink:to="loc_srt_ProductsAndServicesDomain_1f2fed5a-c0c0-492c-9a77-7a9e6e2934ea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_ca9209ad-035e-4b10-81bd-edc16a51151f" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_1f2fed5a-c0c0-492c-9a77-7a9e6e2934ea" xlink:to="loc_srt_ProductsAndServicesDomain_ca9209ad-035e-4b10-81bd-edc16a51151f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedAnnuityMember_34581af7-560b-429c-b681-5f1b488c08b3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FixedAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_ca9209ad-035e-4b10-81bd-edc16a51151f" xlink:to="loc_us-gaap_FixedAnnuityMember_34581af7-560b-429c-b681-5f1b488c08b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UniversalLifeMember_91520fde-3f08-41e1-a87d-649d6866ed8b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UniversalLifeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_ca9209ad-035e-4b10-81bd-edc16a51151f" xlink:to="loc_us-gaap_UniversalLifeMember_91520fde-3f08-41e1-a87d-649d6866ed8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_4397c89d-57a3-4206-97ea-10f87e210d18" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_4a89c87c-2ba2-49e1-871c-adb47243717b" xlink:to="loc_srt_RangeAxis_4397c89d-57a3-4206-97ea-10f87e210d18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4397c89d-57a3-4206-97ea-10f87e210d18_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_4397c89d-57a3-4206-97ea-10f87e210d18" xlink:to="loc_srt_RangeMember_4397c89d-57a3-4206-97ea-10f87e210d18_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_574cd239-5698-4f3b-b10c-2670153beeb0" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_4397c89d-57a3-4206-97ea-10f87e210d18" xlink:to="loc_srt_RangeMember_574cd239-5698-4f3b-b10c-2670153beeb0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_bee14798-55fd-4115-b7f6-40618ad223f8" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_574cd239-5698-4f3b-b10c-2670153beeb0" xlink:to="loc_srt_MinimumMember_bee14798-55fd-4115-b7f6-40618ad223f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_a043f915-1b04-4d44-a5fb-aa31ad0d0793" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_574cd239-5698-4f3b-b10c-2670153beeb0" xlink:to="loc_srt_MaximumMember_a043f915-1b04-4d44-a5fb-aa31ad0d0793" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesEarningsPerShareDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesEarningsPerShareDetails" xlink:type="extended" id="i74a36f4c31354b6593748b2c9db0bcea_BusinessandSummaryofSignificantAccountingPoliciesEarningsPerShareDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesScheduleofChangesinOtherComprehensiveEarningsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesScheduleofChangesinOtherComprehensiveEarningsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesScheduleofChangesinOtherComprehensiveEarningsDetails" xlink:type="extended" id="i631682d32f83455ba92472402ebdf76c_BusinessandSummaryofSignificantAccountingPoliciesScheduleofChangesinOtherComprehensiveEarningsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_b75098ba-a4c1-4332-ba7b-9b89b9c4c246" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_21c154a4-49da-4e1a-b01f-cc21b44e6ada" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_b75098ba-a4c1-4332-ba7b-9b89b9c4c246" xlink:to="loc_us-gaap_StockholdersEquity_21c154a4-49da-4e1a-b01f-cc21b44e6ada" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_fb51daea-7d30-417c-871d-ece0c97d3d7e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_b75098ba-a4c1-4332-ba7b-9b89b9c4c246" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_fb51daea-7d30-417c-871d-ece0c97d3d7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_77314252-723f-40db-9318-37ce69fda415" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_b75098ba-a4c1-4332-ba7b-9b89b9c4c246" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_77314252-723f-40db-9318-37ce69fda415" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_eff78f28-4dd7-4f39-8fc9-daf1c71f1d4e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_66934083-b499-4b65-a9b8-8ca8f7aed96c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_b75098ba-a4c1-4332-ba7b-9b89b9c4c246" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_66934083-b499-4b65-a9b8-8ca8f7aed96c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_a463f3f7-9562-4745-856e-c3e05042b37a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_66934083-b499-4b65-a9b8-8ca8f7aed96c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_a463f3f7-9562-4745-856e-c3e05042b37a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_a463f3f7-9562-4745-856e-c3e05042b37a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_a463f3f7-9562-4745-856e-c3e05042b37a" xlink:to="loc_us-gaap_EquityComponentDomain_a463f3f7-9562-4745-856e-c3e05042b37a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_e4baf17e-b06f-4bca-90e2-7822e3365715" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_a463f3f7-9562-4745-856e-c3e05042b37a" xlink:to="loc_us-gaap_EquityComponentDomain_e4baf17e-b06f-4bca-90e2-7822e3365715" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_b73d1c28-d2c0-415b-b3c6-e639c4905fa3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e4baf17e-b06f-4bca-90e2-7822e3365715" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_b73d1c28-d2c0-415b-b3c6-e639c4905fa3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AccumulatedNetInvestmentGainLossonEquityMethodInvestmentsArisingDuringPeriodAttributabletoParentMember_463fe88e-d6af-4fe9-b018-fb301193b62c" xlink:href="fnf-20201231.xsd#fnf_AccumulatedNetInvestmentGainLossonEquityMethodInvestmentsArisingDuringPeriodAttributabletoParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e4baf17e-b06f-4bca-90e2-7822e3365715" xlink:to="loc_fnf_AccumulatedNetInvestmentGainLossonEquityMethodInvestmentsArisingDuringPeriodAttributabletoParentMember_463fe88e-d6af-4fe9-b018-fb301193b62c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_27148013-dbcf-43ef-8f02-d5d88765a9f5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e4baf17e-b06f-4bca-90e2-7822e3365715" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_27148013-dbcf-43ef-8f02-d5d88765a9f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_b17a3b58-e4e6-41ee-b74c-a1ae887a8963" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e4baf17e-b06f-4bca-90e2-7822e3365715" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_b17a3b58-e4e6-41ee-b74c-a1ae887a8963" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_f3751ac8-db44-4079-be96-8736455f405f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_e4baf17e-b06f-4bca-90e2-7822e3365715" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_f3751ac8-db44-4079-be96-8736455f405f" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesRedeemableNoncontrollingInterestDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesRedeemableNoncontrollingInterestDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesRedeemableNoncontrollingInterestDetails" xlink:type="extended" id="i285f2bed9f77451d9b6775a5eb6ac1e0_BusinessandSummaryofSignificantAccountingPoliciesRedeemableNoncontrollingInterestDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestLineItems_3b6186f2-a213-4af0-8e09-a5f7514f3108" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_0c3ef3ca-f3ca-42ce-8a88-2424d5acf18b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_3b6186f2-a213-4af0-8e09-a5f7514f3108" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_0c3ef3ca-f3ca-42ce-8a88-2424d5acf18b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NoncontrollingInterestPeriodwithnoPublicOfferingforPutOption_2f714149-153b-401d-8cf9-bc30916999f8" xlink:href="fnf-20201231.xsd#fnf_NoncontrollingInterestPeriodwithnoPublicOfferingforPutOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_3b6186f2-a213-4af0-8e09-a5f7514f3108" xlink:to="loc_fnf_NoncontrollingInterestPeriodwithnoPublicOfferingforPutOption_2f714149-153b-401d-8cf9-bc30916999f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_f44eb6be-3f70-4470-bbfa-0f3f48885af9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_3b6186f2-a213-4af0-8e09-a5f7514f3108" xlink:to="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_f44eb6be-3f70-4470-bbfa-0f3f48885af9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates_c2eb2f6b-2b00-44df-9b60-585d58adb6dd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_3b6186f2-a213-4af0-8e09-a5f7514f3108" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates_c2eb2f6b-2b00-44df-9b60-585d58adb6dd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestTable_c80338ef-f6d6-4726-9c7d-ba91a3d0e831" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_MinorityInterestLineItems_3b6186f2-a213-4af0-8e09-a5f7514f3108" xlink:to="loc_us-gaap_MinorityInterestTable_c80338ef-f6d6-4726-9c7d-ba91a3d0e831" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_6edba1e6-7218-444e-b6f3-ab2e92189fc1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_c80338ef-f6d6-4726-9c7d-ba91a3d0e831" xlink:to="loc_srt_CounterpartyNameAxis_6edba1e6-7218-444e-b6f3-ab2e92189fc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6edba1e6-7218-444e-b6f3-ab2e92189fc1_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_6edba1e6-7218-444e-b6f3-ab2e92189fc1" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6edba1e6-7218-444e-b6f3-ab2e92189fc1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_292223b4-b659-4261-a0e3-e3baf16f6fc8" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_6edba1e6-7218-444e-b6f3-ab2e92189fc1" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_292223b4-b659-4261-a0e3-e3baf16f6fc8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ThomasH.LeePartnersLPandAffiliatesMember_652a9abd-de6f-40d2-ac70-4162b5a54fb3" xlink:href="fnf-20201231.xsd#fnf_ThomasH.LeePartnersLPandAffiliatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_292223b4-b659-4261-a0e3-e3baf16f6fc8" xlink:to="loc_fnf_ThomasH.LeePartnersLPandAffiliatesMember_652a9abd-de6f-40d2-ac70-4162b5a54fb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ServiceLinkHoldingsLLCMember_de7b1b70-0ecc-45df-8f68-4468759fe0d6" xlink:href="fnf-20201231.xsd#fnf_ServiceLinkHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_292223b4-b659-4261-a0e3-e3baf16f6fc8" xlink:to="loc_fnf_ServiceLinkHoldingsLLCMember_de7b1b70-0ecc-45df-8f68-4468759fe0d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ae576845-2b5a-492c-a8d8-1901f5e43149" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_c80338ef-f6d6-4726-9c7d-ba91a3d0e831" xlink:to="loc_dei_LegalEntityAxis_ae576845-2b5a-492c-a8d8-1901f5e43149" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ae576845-2b5a-492c-a8d8-1901f5e43149_default" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ae576845-2b5a-492c-a8d8-1901f5e43149" xlink:to="loc_dei_EntityDomain_ae576845-2b5a-492c-a8d8-1901f5e43149_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_764df1d1-1184-4d82-870a-1958d16c3798" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ae576845-2b5a-492c-a8d8-1901f5e43149" xlink:to="loc_dei_EntityDomain_764df1d1-1184-4d82-870a-1958d16c3798" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BlackKnightFinancialServicesInc.Member_949665fd-8cd3-4be1-b9ae-add72ca90ea9" xlink:href="fnf-20201231.xsd#fnf_BlackKnightFinancialServicesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_764df1d1-1184-4d82-870a-1958d16c3798" xlink:to="loc_fnf_BlackKnightFinancialServicesInc.Member_949665fd-8cd3-4be1-b9ae-add72ca90ea9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_65209c9b-06d6-4cc5-a23b-ddcd62894a65" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_c80338ef-f6d6-4726-9c7d-ba91a3d0e831" xlink:to="loc_srt_OwnershipAxis_65209c9b-06d6-4cc5-a23b-ddcd62894a65" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_65209c9b-06d6-4cc5-a23b-ddcd62894a65_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_65209c9b-06d6-4cc5-a23b-ddcd62894a65" xlink:to="loc_srt_OwnershipDomain_65209c9b-06d6-4cc5-a23b-ddcd62894a65_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_011b6835-da2a-4818-96ff-27165e7c12d0" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_65209c9b-06d6-4cc5-a23b-ddcd62894a65" xlink:to="loc_srt_OwnershipDomain_011b6835-da2a-4818-96ff-27165e7c12d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ServiceLinkHoldingsLLCMember_ec934f59-9d2c-4ca9-a07a-be7afe82ef07" xlink:href="fnf-20201231.xsd#fnf_ServiceLinkHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_011b6835-da2a-4818-96ff-27165e7c12d0" xlink:to="loc_fnf_ServiceLinkHoldingsLLCMember_ec934f59-9d2c-4ca9-a07a-be7afe82ef07" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesNotesReceivablefromCannaeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#BusinessandSummaryofSignificantAccountingPoliciesNotesReceivablefromCannaeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BusinessandSummaryofSignificantAccountingPoliciesNotesReceivablefromCannaeDetails" xlink:type="extended" id="i83c0e41f34b84f0394d229a4af71eef9_BusinessandSummaryofSignificantAccountingPoliciesNotesReceivablefromCannaeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_fe0192de-c5f1-478b-a5d1-4638ce87e897" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_034eee0b-1beb-4b47-ac83-f4c7f4c2dd95" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_fe0192de-c5f1-478b-a5d1-4638ce87e897" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_034eee0b-1beb-4b47-ac83-f4c7f4c2dd95" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvancesToAffiliate_3c430229-be2c-41a2-8d98-c04983a3ba0a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdvancesToAffiliate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_fe0192de-c5f1-478b-a5d1-4638ce87e897" xlink:to="loc_us-gaap_AdvancesToAffiliate_3c430229-be2c-41a2-8d98-c04983a3ba0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_96cfdb5e-e6cb-498f-b1d8-fb78da6145bf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_fe0192de-c5f1-478b-a5d1-4638ce87e897" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_96cfdb5e-e6cb-498f-b1d8-fb78da6145bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_c238f4da-f164-4072-bd94-37169ff8ddcf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_fe0192de-c5f1-478b-a5d1-4638ce87e897" xlink:to="loc_us-gaap_DebtInstrumentTerm_c238f4da-f164-4072-bd94-37169ff8ddcf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_9c8c0393-166d-41af-b30a-35c6f767eb2d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentOfNotesReceivableFromRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_fe0192de-c5f1-478b-a5d1-4638ce87e897" xlink:to="loc_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_9c8c0393-166d-41af-b30a-35c6f767eb2d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_20e60edd-fb3f-4d51-b3be-4288c7afb994" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_fe0192de-c5f1-478b-a5d1-4638ce87e897" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_20e60edd-fb3f-4d51-b3be-4288c7afb994" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_953670b1-49a1-40f1-b512-ef4db2470455" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_20e60edd-fb3f-4d51-b3be-4288c7afb994" xlink:to="loc_us-gaap_CreditFacilityAxis_953670b1-49a1-40f1-b512-ef4db2470455" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_953670b1-49a1-40f1-b512-ef4db2470455_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_953670b1-49a1-40f1-b512-ef4db2470455" xlink:to="loc_us-gaap_CreditFacilityDomain_953670b1-49a1-40f1-b512-ef4db2470455_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_1203af99-160d-4bfd-bb55-ec4697eea5db" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_953670b1-49a1-40f1-b512-ef4db2470455" xlink:to="loc_us-gaap_CreditFacilityDomain_1203af99-160d-4bfd-bb55-ec4697eea5db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_78de22dc-d9fa-4fda-9aab-a4005e731b72" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_1203af99-160d-4bfd-bb55-ec4697eea5db" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_78de22dc-d9fa-4fda-9aab-a4005e731b72" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_51fd33d1-0c79-4449-8beb-99bf1a18bb50" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_20e60edd-fb3f-4d51-b3be-4288c7afb994" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_51fd33d1-0c79-4449-8beb-99bf1a18bb50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_51fd33d1-0c79-4449-8beb-99bf1a18bb50_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_51fd33d1-0c79-4449-8beb-99bf1a18bb50" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_51fd33d1-0c79-4449-8beb-99bf1a18bb50_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_79a41404-8887-41eb-9700-dcbf5203abdd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_51fd33d1-0c79-4449-8beb-99bf1a18bb50" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_79a41404-8887-41eb-9700-dcbf5203abdd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BorrowingUnderLineOfCreditMember_771f6477-0a61-4442-8e13-6ceaaa46c53f" xlink:href="fnf-20201231.xsd#fnf_BorrowingUnderLineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_79a41404-8887-41eb-9700-dcbf5203abdd" xlink:to="loc_fnf_BorrowingUnderLineOfCreditMember_771f6477-0a61-4442-8e13-6ceaaa46c53f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_36a3207d-c189-4c73-b0fe-429973631e6d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_20e60edd-fb3f-4d51-b3be-4288c7afb994" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_36a3207d-c189-4c73-b0fe-429973631e6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_36a3207d-c189-4c73-b0fe-429973631e6d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_36a3207d-c189-4c73-b0fe-429973631e6d" xlink:to="loc_us-gaap_RelatedPartyDomain_36a3207d-c189-4c73-b0fe-429973631e6d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_bb9878c1-0318-4c3d-8909-83609416d80c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_36a3207d-c189-4c73-b0fe-429973631e6d" xlink:to="loc_us-gaap_RelatedPartyDomain_bb9878c1-0318-4c3d-8909-83609416d80c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_1633fb14-5d84-4fa5-b4b7-b8e61e2dd04a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_bb9878c1-0318-4c3d-8909-83609416d80c" xlink:to="loc_srt_AffiliatedEntityMember_1633fb14-5d84-4fa5-b4b7-b8e61e2dd04a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_420800b6-6b94-471f-bed9-2ee63cc2921d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_20e60edd-fb3f-4d51-b3be-4288c7afb994" xlink:to="loc_us-gaap_VariableRateAxis_420800b6-6b94-471f-bed9-2ee63cc2921d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_420800b6-6b94-471f-bed9-2ee63cc2921d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_420800b6-6b94-471f-bed9-2ee63cc2921d" xlink:to="loc_us-gaap_VariableRateDomain_420800b6-6b94-471f-bed9-2ee63cc2921d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_47ef819d-87c9-4673-936e-c3964028bb47" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_420800b6-6b94-471f-bed9-2ee63cc2921d" xlink:to="loc_us-gaap_VariableRateDomain_47ef819d-87c9-4673-936e-c3964028bb47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_913e9ccc-ea6e-4f6c-b0f4-105354cd89d0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_47ef819d-87c9-4673-936e-c3964028bb47" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_913e9ccc-ea6e-4f6c-b0f4-105354cd89d0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Acquisitions" xlink:type="simple" xlink:href="fnf-20201231.xsd#Acquisitions"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Acquisitions" xlink:type="extended" id="iac0aff057b004a10a41567c6858361a7_Acquisitions"/>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#AcquisitionsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsTables" xlink:type="extended" id="i42d4f8f5514a407bb51ab46eab5c8a06_AcquisitionsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#AcquisitionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsNarrativeDetails" xlink:type="extended" id="i7ba96ed008794841b18877f9204a3528_AcquisitionsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_9b74f800-4e85-471e-ba35-2a78e73255be" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_9b74f800-4e85-471e-ba35-2a78e73255be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_c0756f43-e924-46da-9806-9e94fddef882" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_c0756f43-e924-46da-9806-9e94fddef882" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_91f9537d-7dec-4378-ab12-09a034625859" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_91f9537d-7dec-4378-ab12-09a034625859" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_5e91636b-679f-4289-a13e-31645d0aab10" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_5e91636b-679f-4289-a13e-31645d0aab10" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationWarrantConversionConsiderationOrdinarySharesConvertedToRightToPurchaseAndReceiveUponExerciseCashPaidPerShare_f41e4955-3bb8-4db9-b3f1-dfd78ca074c5" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationWarrantConversionConsiderationOrdinarySharesConvertedToRightToPurchaseAndReceiveUponExerciseCashPaidPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_fnf_BusinessCombinationWarrantConversionConsiderationOrdinarySharesConvertedToRightToPurchaseAndReceiveUponExerciseCashPaidPerShare_f41e4955-3bb8-4db9-b3f1-dfd78ca074c5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare_549b5807-cd0e-4da4-8452-3b05453560ff" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_fnf_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare_549b5807-cd0e-4da4-8452-3b05453560ff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationSharesConvertedCommonAndPreferredStock_4fb77f59-5013-41a1-848c-84f673f8d1de" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationSharesConvertedCommonAndPreferredStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_fnf_BusinessCombinationSharesConvertedCommonAndPreferredStock_4fb77f59-5013-41a1-848c-84f673f8d1de" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_4a9d08c7-447c-4a55-a7c4-c13ed16fda42" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_4a9d08c7-447c-4a55-a7c4-c13ed16fda42" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInvestmentInUnconsolidatedEntities_aef8eb3d-c9c9-43d1-aaa8-158d9c37998b" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInvestmentInUnconsolidatedEntities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInvestmentInUnconsolidatedEntities_aef8eb3d-c9c9-43d1-aaa8-158d9c37998b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteReinsuranceRecoverable_24049e34-a933-4769-a8ff-16fe4bffd198" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteReinsuranceRecoverable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteReinsuranceRecoverable_24049e34-a933-4769-a8ff-16fe4bffd198" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_1c6ab0f6-053d-4d05-bc66-50aa2c71ba07" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_1c6ab0f6-053d-4d05-bc66-50aa2c71ba07" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles_56270f12-16f0-4ed7-a4f8-f11aafb310bf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles_56270f12-16f0-4ed7-a4f8-f11aafb310bf" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTaxAssets_90ccf1d0-aff9-4dd7-ae13-e64cda95c894" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTaxAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTaxAssets_90ccf1d0-aff9-4dd7-ae13-e64cda95c894" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsPayableAndAccruedLiabilities_9e9a1d16-6572-40a1-9b67-4bd87966c392" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsPayableAndAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_fnf_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsPayableAndAccruedLiabilities_9e9a1d16-6572-40a1-9b67-4bd87966c392" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_578d02f6-669d-4f6d-97ea-9db6e1ff3ed1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_578d02f6-669d-4f6d-97ea-9db6e1ff3ed1" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_1e4a2c21-126d-4642-85b0-d87cfb419e92" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_1e4a2c21-126d-4642-85b0-d87cfb419e92" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_3d9e23a9-c1a7-43d9-9eb9-1ce3e3e052a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_f52e806e-8e90-46f5-90e7-a850ecba55e2" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_3d9e23a9-c1a7-43d9-9eb9-1ce3e3e052a9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_08a3596a-dd51-43d4-8c4f-2d8722e9f0f3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_3d9e23a9-c1a7-43d9-9eb9-1ce3e3e052a9" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_08a3596a-dd51-43d4-8c4f-2d8722e9f0f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_08a3596a-dd51-43d4-8c4f-2d8722e9f0f3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_08a3596a-dd51-43d4-8c4f-2d8722e9f0f3" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_08a3596a-dd51-43d4-8c4f-2d8722e9f0f3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b5616bed-48d5-4f90-b73a-37abcb3107e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_08a3596a-dd51-43d4-8c4f-2d8722e9f0f3" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b5616bed-48d5-4f90-b73a-37abcb3107e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_da2eab73-13ac-47ce-b1ca-bf8ad964728e" xlink:href="fnf-20201231.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b5616bed-48d5-4f90-b73a-37abcb3107e7" xlink:to="loc_fnf_FGMember_da2eab73-13ac-47ce-b1ca-bf8ad964728e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsConsiderationPaidDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#AcquisitionsConsiderationPaidDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsConsiderationPaidDetails" xlink:type="extended" id="ief59429402b1459484ded9ee7de74df4_AcquisitionsConsiderationPaidDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PaymentsToAcquireBusinessesIncludingContingentConsiderationShares_fdb11a5e-1867-4007-9078-9a3ee43620ab" xlink:href="fnf-20201231.xsd#fnf_PaymentsToAcquireBusinessesIncludingContingentConsiderationShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:to="loc_fnf_PaymentsToAcquireBusinessesIncludingContingentConsiderationShares_fdb11a5e-1867-4007-9078-9a3ee43620ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAcquiredFromAcquisition_d7302193-b907-40f9-92d9-32956d219b33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAcquiredFromAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:to="loc_us-gaap_CashAcquiredFromAcquisition_d7302193-b907-40f9-92d9-32956d219b33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_e4dcf5ed-706e-46be-949d-260ac4ffdb1c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_e4dcf5ed-706e-46be-949d-260ac4ffdb1c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_543c0eb7-d761-435e-9ea1-23eff06679c2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_543c0eb7-d761-435e-9ea1-23eff06679c2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_56c4024f-6d5c-4d2a-806e-06cab304594c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredOther1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_56c4024f-6d5c-4d2a-806e-06cab304594c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationConsiderationTransferredNet_d2747f66-4c43-41d9-9908-cd8293dcc3be" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationConsiderationTransferredNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:to="loc_fnf_BusinessCombinationConsiderationTransferredNet_d2747f66-4c43-41d9-9908-cd8293dcc3be" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_f75d7469-2161-47bc-a7d4-9ed4358e0e54" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_71d04b81-ce99-41d3-b5b5-e7502b660cb7" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_f75d7469-2161-47bc-a7d4-9ed4358e0e54" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_0e3990a5-00d6-4a85-80de-d46b7db8a17b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_f75d7469-2161-47bc-a7d4-9ed4358e0e54" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_0e3990a5-00d6-4a85-80de-d46b7db8a17b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_0e3990a5-00d6-4a85-80de-d46b7db8a17b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_0e3990a5-00d6-4a85-80de-d46b7db8a17b" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_0e3990a5-00d6-4a85-80de-d46b7db8a17b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2501dd73-3414-4c68-b6c1-0d70db90b321" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_0e3990a5-00d6-4a85-80de-d46b7db8a17b" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2501dd73-3414-4c68-b6c1-0d70db90b321" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_894d8c03-23b2-4303-b729-2f9ebff331eb" xlink:href="fnf-20201231.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2501dd73-3414-4c68-b6c1-0d70db90b321" xlink:to="loc_fnf_FGMember_894d8c03-23b2-4303-b729-2f9ebff331eb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended" id="i24c4c98fbe914685b1e65a9f614589a2_AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_b0e66bf1-96d1-4dc6-96d4-2c1695d877f4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_b0e66bf1-96d1-4dc6-96d4-2c1695d877f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsDerivativeInstruments_f54e1b30-2c09-428c-bd7d-99659e1bfb46" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsDerivativeInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsDerivativeInstruments_f54e1b30-2c09-428c-bd7d-99659e1bfb46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsMortgageLoans_abd49d4c-b511-43ea-8c98-b2fbfb7e4d8c" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsMortgageLoans_abd49d4c-b511-43ea-8c98-b2fbfb7e4d8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonCurrentAssetsEquityMethodInvestments_f1f674af-bc99-409d-b9d4-f5a1ea5e2872" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonCurrentAssetsEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonCurrentAssetsEquityMethodInvestments_f1f674af-bc99-409d-b9d4-f5a1ea5e2872" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_49b09807-3c88-4167-8017-285c3498acfa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_49b09807-3c88-4167-8017-285c3498acfa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsShortTermInvestments_f46415bc-d990-4821-ab63-9405ca570015" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsShortTermInvestments_f46415bc-d990-4821-ab63-9405ca570015" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_ef24cf5e-e449-4dd9-b153-234fb3b60489" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_ef24cf5e-e449-4dd9-b153-234fb3b60489" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsReinsuranceRecoverables_53f469d1-58ee-4072-bd44-350c7b832a9b" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsReinsuranceRecoverables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsReinsuranceRecoverables_53f469d1-58ee-4072-bd44-350c7b832a9b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_3dcbc433-93bb-4386-aa78-e3ee920c51e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_Goodwill_3dcbc433-93bb-4386-aa78-e3ee920c51e7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_f20ac163-2e41-46af-b97a-29806bbf5c61" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_f20ac163-2e41-46af-b97a-29806bbf5c61" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRightOfUseAssets_237456a3-988d-4655-a89f-f7406c40f6d9" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRightOfUseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRightOfUseAssets_237456a3-988d-4655-a89f-f7406c40f6d9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_8173898b-632a-4fed-982e-b46c414637a8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_8173898b-632a-4fed-982e-b46c414637a8" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIncomeTaxesReceivable_857bd770-8e79-44d2-866c-ea8007808b8f" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIncomeTaxesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIncomeTaxesReceivable_857bd770-8e79-44d2-866c-ea8007808b8f" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets_a3689634-8ea5-4834-814b-ea4088bb7d81" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets_a3689634-8ea5-4834-814b-ea4088bb7d81" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsOfDiscontinuedOperations_33360483-12a7-4b1b-92c2-fbcc01cbbfc6" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsOfDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsOfDiscontinuedOperations_33360483-12a7-4b1b-92c2-fbcc01cbbfc6" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_629bd1b7-3bd7-45d8-b17d-37c648b4db21" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_629bd1b7-3bd7-45d8-b17d-37c648b4db21" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityPolicyHolderAccountBalances_f054e012-b8ad-4dc2-a4cc-8c224694e14e" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityPolicyHolderAccountBalances"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityPolicyHolderAccountBalances_f054e012-b8ad-4dc2-a4cc-8c224694e14e" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityForFuturePolicyBenefits_e8568a25-203b-46cd-800a-5988042b59ca" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityForFuturePolicyBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityForFuturePolicyBenefits_e8568a25-203b-46cd-800a-5988042b59ca" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_b52612b9-fdf9-4bdd-8472-9f349604c51f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_b52612b9-fdf9-4bdd-8472-9f349604c51f" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_0342a5cc-936a-4133-95c3-580cc5be9c3d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_0342a5cc-936a-4133-95c3-580cc5be9c3d" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFundsWithheldForReinsuranceLiabilities_893b64a9-9b21-43e8-921e-976c4206f5ec" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFundsWithheldForReinsuranceLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFundsWithheldForReinsuranceLiabilities_893b64a9-9b21-43e8-921e-976c4206f5ec" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiability_2988f290-d600-48a2-9cdd-2b813adb857a" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiability_2988f290-d600-48a2-9cdd-2b813adb857a" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOfDiscontinuedOperations_a83d3fee-5217-4b9a-89c1-a9818e7ae35b" xlink:href="fnf-20201231.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOfDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOfDiscontinuedOperations_a83d3fee-5217-4b9a-89c1-a9818e7ae35b" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_1062ce75-c5e5-48de-b306-010b2d021c66" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_1062ce75-c5e5-48de-b306-010b2d021c66" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_9549bb1c-2ece-4d9a-a6b0-060b91952274" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_9549bb1c-2ece-4d9a-a6b0-060b91952274" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_df7a3869-ceb1-461f-9930-3968b6890f38" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_68247d0f-333f-4ed3-888e-68ebee9f33ed" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_df7a3869-ceb1-461f-9930-3968b6890f38" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_ef97d3b1-0822-4d39-94d9-7baab13ceefd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_df7a3869-ceb1-461f-9930-3968b6890f38" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_ef97d3b1-0822-4d39-94d9-7baab13ceefd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ef97d3b1-0822-4d39-94d9-7baab13ceefd_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_ef97d3b1-0822-4d39-94d9-7baab13ceefd" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ef97d3b1-0822-4d39-94d9-7baab13ceefd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_308dfd4c-2085-429e-bda7-d9a3ae8e1510" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_ef97d3b1-0822-4d39-94d9-7baab13ceefd" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_308dfd4c-2085-429e-bda7-d9a3ae8e1510" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_7c89b0cc-2c45-48b3-a25d-801bace05710" xlink:href="fnf-20201231.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_308dfd4c-2085-429e-bda7-d9a3ae8e1510" xlink:to="loc_fnf_FGMember_7c89b0cc-2c45-48b3-a25d-801bace05710" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_c4a177dc-ea05-4e5a-8163-7b8767cb26fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_df7a3869-ceb1-461f-9930-3968b6890f38" xlink:to="loc_us-gaap_FinancialInstrumentAxis_c4a177dc-ea05-4e5a-8163-7b8767cb26fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_c4a177dc-ea05-4e5a-8163-7b8767cb26fd_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_c4a177dc-ea05-4e5a-8163-7b8767cb26fd" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_c4a177dc-ea05-4e5a-8163-7b8767cb26fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_410ec436-7730-4d0d-bcf4-abc0e5116aa0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_c4a177dc-ea05-4e5a-8163-7b8767cb26fd" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_410ec436-7730-4d0d-bcf4-abc0e5116aa0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_b472e25a-57af-4bff-a4d7-c6704b600e68" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_410ec436-7730-4d0d-bcf4-abc0e5116aa0" xlink:to="loc_us-gaap_DebtSecuritiesMember_b472e25a-57af-4bff-a4d7-c6704b600e68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_2c34af5b-f027-46cf-998d-d077a8988a83" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_410ec436-7730-4d0d-bcf4-abc0e5116aa0" xlink:to="loc_us-gaap_PreferredStockMember_2c34af5b-f027-46cf-998d-d077a8988a83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_8dd7fee3-3ea9-456f-874d-70cc7e39e6d1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_410ec436-7730-4d0d-bcf4-abc0e5116aa0" xlink:to="loc_us-gaap_EquitySecuritiesMember_8dd7fee3-3ea9-456f-874d-70cc7e39e6d1" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsCarryingValueandEstimatedUsefulLivesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#AcquisitionsCarryingValueandEstimatedUsefulLivesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsCarryingValueandEstimatedUsefulLivesDetails" xlink:type="extended" id="id38ac8430dd34cbb8540ca47293422bd_AcquisitionsCarryingValueandEstimatedUsefulLivesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1b7d2552-2c56-4569-965d-b0d6633715f8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_1b140aa7-ec5f-48f3-a42b-544e7788a58a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1b7d2552-2c56-4569-965d-b0d6633715f8" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_1b140aa7-ec5f-48f3-a42b-544e7788a58a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_cc92aaff-54ab-4260-932e-2db875044e7e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1b7d2552-2c56-4569-965d-b0d6633715f8" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_cc92aaff-54ab-4260-932e-2db875044e7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_365fadd5-33f3-480f-ab63-f5da73cfa0b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1b7d2552-2c56-4569-965d-b0d6633715f8" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_365fadd5-33f3-480f-ab63-f5da73cfa0b4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_4ac41162-466f-4f81-a86f-0db3686b7083" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_365fadd5-33f3-480f-ab63-f5da73cfa0b4" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_4ac41162-466f-4f81-a86f-0db3686b7083" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4ac41162-466f-4f81-a86f-0db3686b7083_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_4ac41162-466f-4f81-a86f-0db3686b7083" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4ac41162-466f-4f81-a86f-0db3686b7083_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a005e437-559b-4d7f-aeba-cb16e5a4982c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_4ac41162-466f-4f81-a86f-0db3686b7083" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a005e437-559b-4d7f-aeba-cb16e5a4982c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_8c713843-527d-46e7-8705-b01a9ea0bff1" xlink:href="fnf-20201231.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a005e437-559b-4d7f-aeba-cb16e5a4982c" xlink:to="loc_fnf_FGMember_8c713843-527d-46e7-8705-b01a9ea0bff1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_65937d86-4f0e-432a-9685-9d3c1086714e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_365fadd5-33f3-480f-ab63-f5da73cfa0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_65937d86-4f0e-432a-9685-9d3c1086714e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_65937d86-4f0e-432a-9685-9d3c1086714e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_65937d86-4f0e-432a-9685-9d3c1086714e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_65937d86-4f0e-432a-9685-9d3c1086714e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d737e74d-752a-4715-8342-2175b6d25068" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_65937d86-4f0e-432a-9685-9d3c1086714e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d737e74d-752a-4715-8342-2175b6d25068" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PVFPMember_684d6a0c-4de0-449f-bbec-72fca1874dba" xlink:href="fnf-20201231.xsd#fnf_PVFPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d737e74d-752a-4715-8342-2175b6d25068" xlink:to="loc_fnf_PVFPMember_684d6a0c-4de0-449f-bbec-72fca1874dba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ValueOfDistributionAssetMember_b426d0eb-be69-444f-84fe-c3ba58fbdd01" xlink:href="fnf-20201231.xsd#fnf_ValueOfDistributionAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d737e74d-752a-4715-8342-2175b6d25068" xlink:to="loc_fnf_ValueOfDistributionAssetMember_b426d0eb-be69-444f-84fe-c3ba58fbdd01" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_eba55705-e461-4d66-b4b9-336e4063400a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d737e74d-752a-4715-8342-2175b6d25068" xlink:to="loc_us-gaap_TradeNamesMember_eba55705-e461-4d66-b4b9-336e4063400a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_af354140-787c-4b05-8d4f-34bb0735770f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d737e74d-752a-4715-8342-2175b6d25068" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_af354140-787c-4b05-8d4f-34bb0735770f" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsProFormaInformationDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#AcquisitionsProFormaInformationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsProFormaInformationDetails" xlink:type="extended" id="i90acb63f4c5d488285184dd6c86667be_AcquisitionsProFormaInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_eedb9e2b-0f54-4e8e-9032-31e5344cfd01" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_6d06a302-7e65-4886-bb02-977528fb27cd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_eedb9e2b-0f54-4e8e-9032-31e5344cfd01" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_6d06a302-7e65-4886-bb02-977528fb27cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_8279024b-810e-4c3a-9e64-0393f8601cc1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_eedb9e2b-0f54-4e8e-9032-31e5344cfd01" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_8279024b-810e-4c3a-9e64-0393f8601cc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_590c1247-8c8a-4f38-8b45-97b58a9bb66c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_eedb9e2b-0f54-4e8e-9032-31e5344cfd01" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_590c1247-8c8a-4f38-8b45-97b58a9bb66c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_e0a98c60-6ae9-454c-92dc-8cb79093ce77" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_590c1247-8c8a-4f38-8b45-97b58a9bb66c" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_e0a98c60-6ae9-454c-92dc-8cb79093ce77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e0a98c60-6ae9-454c-92dc-8cb79093ce77_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e0a98c60-6ae9-454c-92dc-8cb79093ce77" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e0a98c60-6ae9-454c-92dc-8cb79093ce77_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7ee2670c-1cac-420c-b092-d77a28f747cd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e0a98c60-6ae9-454c-92dc-8cb79093ce77" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7ee2670c-1cac-420c-b092-d77a28f747cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_d66c8855-86f2-47b3-8b7a-88424091ba11" xlink:href="fnf-20201231.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7ee2670c-1cac-420c-b092-d77a28f747cd" xlink:to="loc_fnf_FGMember_d66c8855-86f2-47b3-8b7a-88424091ba11" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforClaimLosses" xlink:type="simple" xlink:href="fnf-20201231.xsd#SummaryofReserveforClaimLosses"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforClaimLosses" xlink:type="extended" id="if79e9e267592464baacbdc7b0951cc30_SummaryofReserveforClaimLosses"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#SummaryofReserveforTitleClaimLossesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesTables" xlink:type="extended" id="i566931a8c3c24aa6a5422d989d13082c_SummaryofReserveforTitleClaimLossesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#SummaryofReserveforTitleClaimLossesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesDetails" xlink:type="extended" id="ie10dcf22eebf4a8db0f638f6ef20ccc8_SummaryofReserveforTitleClaimLossesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_6e515cd2-2602-4d8a-81be-8c16da916c9c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_fece4668-ecc0-4d63-8728-e9c9a7a53f87" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_6e515cd2-2602-4d8a-81be-8c16da916c9c" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_fece4668-ecc0-4d63-8728-e9c9a7a53f87" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_0a374d0c-4620-4853-97d7-aba538f72f6a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_fece4668-ecc0-4d63-8728-e9c9a7a53f87" xlink:to="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_0a374d0c-4620-4853-97d7-aba538f72f6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInReinsuranceRecoverable_2ac1578d-f013-4dad-a99d-0c778b8c7d0a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInReinsuranceRecoverable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_fece4668-ecc0-4d63-8728-e9c9a7a53f87" xlink:to="loc_us-gaap_IncreaseDecreaseInReinsuranceRecoverable_2ac1578d-f013-4dad-a99d-0c778b8c7d0a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract_5371c808-b4d7-49d2-a68f-6a208038874b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_fece4668-ecc0-4d63-8728-e9c9a7a53f87" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract_5371c808-b4d7-49d2-a68f-6a208038874b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense_a1e16500-4d8e-42ba-8221-59864232df29" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract_5371c808-b4d7-49d2-a68f-6a208038874b" xlink:to="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense_a1e16500-4d8e-42ba-8221-59864232df29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense_8e59ead5-3561-4473-aded-8c43493a4c3a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract_5371c808-b4d7-49d2-a68f-6a208038874b" xlink:to="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense_8e59ead5-3561-4473-aded-8c43493a4c3a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1_4266534d-1712-4fe6-a363-f68d6896ba04" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract_5371c808-b4d7-49d2-a68f-6a208038874b" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1_4266534d-1712-4fe6-a363-f68d6896ba04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract_e00e37c2-03a7-417e-8e7c-06726d381b7a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_fece4668-ecc0-4d63-8728-e9c9a7a53f87" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract_e00e37c2-03a7-417e-8e7c-06726d381b7a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1_fb77577c-d933-4818-9cfc-63e6d7c78072" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract_e00e37c2-03a7-417e-8e7c-06726d381b7a" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1_fb77577c-d933-4818-9cfc-63e6d7c78072" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1_83d45d66-e3fd-4b32-8a57-92b2d54e6da2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract_e00e37c2-03a7-417e-8e7c-06726d381b7a" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1_83d45d66-e3fd-4b32-8a57-92b2d54e6da2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForLossesAndLossAdjustmentExpense_fa018831-0edc-43cb-8466-067ba0cb3d87" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForLossesAndLossAdjustmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract_e00e37c2-03a7-417e-8e7c-06726d381b7a" xlink:to="loc_us-gaap_PaymentsForLossesAndLossAdjustmentExpense_fa018831-0edc-43cb-8466-067ba0cb3d87" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_f5d67edb-8906-4a66-a5e4-22e99749c986" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ProvisionForTitleInsuranceClaimsOnCurrentYearPolicies_23921a9a-35e5-4e29-9c79-c9f3a20c0922" xlink:href="fnf-20201231.xsd#fnf_ProvisionForTitleInsuranceClaimsOnCurrentYearPolicies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_fece4668-ecc0-4d63-8728-e9c9a7a53f87" xlink:to="loc_fnf_ProvisionForTitleInsuranceClaimsOnCurrentYearPolicies_23921a9a-35e5-4e29-9c79-c9f3a20c0922" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_e2524dea-a7a3-4c0d-ac3f-60cc69fc673b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_6e515cd2-2602-4d8a-81be-8c16da916c9c" xlink:to="loc_us-gaap_LossContingenciesTable_e2524dea-a7a3-4c0d-ac3f-60cc69fc673b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f8c0f7f9-225c-4514-baf0-498c07425fe6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_e2524dea-a7a3-4c0d-ac3f-60cc69fc673b" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f8c0f7f9-225c-4514-baf0-498c07425fe6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f8c0f7f9-225c-4514-baf0-498c07425fe6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f8c0f7f9-225c-4514-baf0-498c07425fe6" xlink:to="loc_us-gaap_SegmentDomain_f8c0f7f9-225c-4514-baf0-498c07425fe6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_2dc6e04e-f157-4496-836b-3c4e2c884b97" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f8c0f7f9-225c-4514-baf0-498c07425fe6" xlink:to="loc_us-gaap_SegmentDomain_2dc6e04e-f157-4496-836b-3c4e2c884b97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_07425119-0dda-4204-97d1-b16a08b8f6d8" xlink:href="fnf-20201231.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_2dc6e04e-f157-4496-836b-3c4e2c884b97" xlink:to="loc_fnf_TitleSegmentMember_07425119-0dda-4204-97d1-b16a08b8f6d8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#SummaryofReserveforTitleClaimLossesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesNarrativeDetails" xlink:type="extended" id="i54c0b4c75f9343e5a2a62f694ef559f9_SummaryofReserveforTitleClaimLossesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_a4363396-f653-4636-8a1a-999c83164f72" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue_3feef2ae-7e86-492c-b40b-e33e8ec772d2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_a4363396-f653-4636-8a1a-999c83164f72" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue_3feef2ae-7e86-492c-b40b-e33e8ec772d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_4dabd8ab-fdd2-418e-b1a1-23a4cc02afd9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_a4363396-f653-4636-8a1a-999c83164f72" xlink:to="loc_us-gaap_LossContingenciesTable_4dabd8ab-fdd2-418e-b1a1-23a4cc02afd9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusAxis_4e8adefb-ae50-452c-aa80-784cd0775811" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LitigationStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_4dabd8ab-fdd2-418e-b1a1-23a4cc02afd9" xlink:to="loc_us-gaap_LitigationStatusAxis_4e8adefb-ae50-452c-aa80-784cd0775811" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_4e8adefb-ae50-452c-aa80-784cd0775811_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LitigationStatusAxis_4e8adefb-ae50-452c-aa80-784cd0775811" xlink:to="loc_us-gaap_LitigationStatusDomain_4e8adefb-ae50-452c-aa80-784cd0775811_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_6e1d8af8-6a84-4163-9002-bd3741529083" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LitigationStatusAxis_4e8adefb-ae50-452c-aa80-784cd0775811" xlink:to="loc_us-gaap_LitigationStatusDomain_6e1d8af8-6a84-4163-9002-bd3741529083" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PendingLitigationMember_8e740c7f-62c8-4f6f-b0e9-6c4fb3b1b0ea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PendingLitigationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationStatusDomain_6e1d8af8-6a84-4163-9002-bd3741529083" xlink:to="loc_us-gaap_PendingLitigationMember_8e740c7f-62c8-4f6f-b0e9-6c4fb3b1b0ea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_8c039d00-5405-4edb-9adb-3f315f1b87f9" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_4dabd8ab-fdd2-418e-b1a1-23a4cc02afd9" xlink:to="loc_srt_LitigationCaseAxis_8c039d00-5405-4edb-9adb-3f315f1b87f9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_8c039d00-5405-4edb-9adb-3f315f1b87f9_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_8c039d00-5405-4edb-9adb-3f315f1b87f9" xlink:to="loc_srt_LitigationCaseTypeDomain_8c039d00-5405-4edb-9adb-3f315f1b87f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_8c039d00-5405-4edb-9adb-3f315f1b87f9" xlink:to="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_KimFundingLLCKimHPetersonJosephJCohenAndABCFundingStrategiesLLCVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_9e8f5ef4-a57f-42ee-a18d-bccf9a7b9e1a" xlink:href="fnf-20201231.xsd#fnf_KimFundingLLCKimHPetersonJosephJCohenAndABCFundingStrategiesLLCVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_KimFundingLLCKimHPetersonJosephJCohenAndABCFundingStrategiesLLCVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_9e8f5ef4-a57f-42ee-a18d-bccf9a7b9e1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WakefieldCapitalLLCWakefieldInvestmentsLLC2BudzHoldingLLCDougAndKristineHeidrichAndJeffAndHeidiOrrVChicagoTitleCoAndChicagoTitleInsCoMember_452b904d-f2b6-4a3c-bbe4-7a3a7fcd3db9" xlink:href="fnf-20201231.xsd#fnf_WakefieldCapitalLLCWakefieldInvestmentsLLC2BudzHoldingLLCDougAndKristineHeidrichAndJeffAndHeidiOrrVChicagoTitleCoAndChicagoTitleInsCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_WakefieldCapitalLLCWakefieldInvestmentsLLC2BudzHoldingLLCDougAndKristineHeidrichAndJeffAndHeidiOrrVChicagoTitleCoAndChicagoTitleInsCoMember_452b904d-f2b6-4a3c-bbe4-7a3a7fcd3db9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RandolphLLevinEtAlVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeBettyElixmanEtAlMember_4b0dd112-3e09-421a-bae1-7c75567076d1" xlink:href="fnf-20201231.xsd#fnf_RandolphLLevinEtAlVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeBettyElixmanEtAlMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_RandolphLLevinEtAlVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeBettyElixmanEtAlMember_4b0dd112-3e09-421a-bae1-7c75567076d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MarkAthertonEtAlVChicagoTitleCoAndChicagoTitleInsCoMember_b0f75acb-f601-4da9-9cd0-e5f16d1d0480" xlink:href="fnf-20201231.xsd#fnf_MarkAthertonEtAlVChicagoTitleCoAndChicagoTitleInsCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_MarkAthertonEtAlVChicagoTitleCoAndChicagoTitleInsCoMember_b0f75acb-f601-4da9-9cd0-e5f16d1d0480" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SusanHellerFenleySeparatePropertyTrustSusanHellerFenleyInheritedRothIRAShelleyLynnTarditiTrustAndROJLLCVChicagoTitleCoChicagoTitleInsCoMember_d73254d7-e8c6-4f6f-9fd1-3283d7712579" xlink:href="fnf-20201231.xsd#fnf_SusanHellerFenleySeparatePropertyTrustSusanHellerFenleyInheritedRothIRAShelleyLynnTarditiTrustAndROJLLCVChicagoTitleCoChicagoTitleInsCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_SusanHellerFenleySeparatePropertyTrustSusanHellerFenleyInheritedRothIRAShelleyLynnTarditiTrustAndROJLLCVChicagoTitleCoChicagoTitleInsCoMember_d73254d7-e8c6-4f6f-9fd1-3283d7712579" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_YuanYuAndPollyYuVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_efa24d5e-d4cb-4d76-bcc7-fe91d49deb34" xlink:href="fnf-20201231.xsd#fnf_YuanYuAndPollyYuVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_YuanYuAndPollyYuVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_efa24d5e-d4cb-4d76-bcc7-fe91d49deb34" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BancOfCaliforniaNationalAssociationVLauriePetersonMember_a6316f24-d393-4dc1-89dc-f68a121c492c" xlink:href="fnf-20201231.xsd#fnf_BancOfCaliforniaNationalAssociationVLauriePetersonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_BancOfCaliforniaNationalAssociationVLauriePetersonMember_a6316f24-d393-4dc1-89dc-f68a121c492c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LauriePetersonVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_f9c9097c-5f95-458c-a59e-2fc8735deac0" xlink:href="fnf-20201231.xsd#fnf_LauriePetersonVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_LauriePetersonVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_f9c9097c-5f95-458c-a59e-2fc8735deac0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CalPrivateBankVKimHPetersonTrusteeOfThePetersonFamilyTrustDatedApril141992Member_96a6493d-da90-4daa-9b4e-dec26fbace11" xlink:href="fnf-20201231.xsd#fnf_CalPrivateBankVKimHPetersonTrusteeOfThePetersonFamilyTrustDatedApril141992Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_CalPrivateBankVKimHPetersonTrusteeOfThePetersonFamilyTrustDatedApril141992Member_96a6493d-da90-4daa-9b4e-dec26fbace11" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_KimHPetersonTrusteeOfThePetersonFamilyTrustDatedApril141992VChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_bbb42bb1-0c8e-4cca-8381-398156ee646f" xlink:href="fnf-20201231.xsd#fnf_KimHPetersonTrusteeOfThePetersonFamilyTrustDatedApril141992VChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_KimHPetersonTrusteeOfThePetersonFamilyTrustDatedApril141992VChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_bbb42bb1-0c8e-4cca-8381-398156ee646f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OvationFinHoldings2LLCOvationFundMgmtIILLCBancOfCaliforniaNAVChicagoTitleInsCoAndPlaintiffsMember_812bb304-b70d-4b05-8608-9b3373cc541a" xlink:href="fnf-20201231.xsd#fnf_OvationFinHoldings2LLCOvationFundMgmtIILLCBancOfCaliforniaNAVChicagoTitleInsCoAndPlaintiffsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_OvationFinHoldings2LLCOvationFundMgmtIILLCBancOfCaliforniaNAVChicagoTitleInsCoAndPlaintiffsMember_812bb304-b70d-4b05-8608-9b3373cc541a" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CalPrivateBankVChicagoTitleCoAndChicagoTitleInsCoMember_bfdfd7a5-0091-42d5-ba15-2a38b6648064" xlink:href="fnf-20201231.xsd#fnf_CalPrivateBankVChicagoTitleCoAndChicagoTitleInsCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_CalPrivateBankVChicagoTitleCoAndChicagoTitleInsCoMember_bfdfd7a5-0091-42d5-ba15-2a38b6648064" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DHClaimsLLCVChicagoTitleCoChicagoTitleInsCoAndDellaDucharmeMember_8cdd4a40-3878-4833-a429-99d7b0f53e4c" xlink:href="fnf-20201231.xsd#fnf_DHClaimsLLCVChicagoTitleCoChicagoTitleInsCoAndDellaDucharmeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_7f7a29b3-d878-47a9-97a3-9b430569fd70" xlink:to="loc_fnf_DHClaimsLLCVChicagoTitleCoChicagoTitleInsCoAndDellaDucharmeMember_8cdd4a40-3878-4833-a429-99d7b0f53e4c" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstruments" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstruments"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstruments" xlink:type="extended" id="i104321b59d614e3589cde976435ce008_FairValueofFinancialInstruments"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstrumentsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsTables" xlink:type="extended" id="i6222117172b7445fa9a81d46b783ab91_FairValueofFinancialInstrumentsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails" xlink:type="extended" id="i69613b864a34443d8f289a04ad1ecdad_FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_d29946b1-81b6-40fa-9d4f-2549fdb9154a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_d29946b1-81b6-40fa-9d4f-2549fdb9154a" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_7700afa2-5744-474f-aa97-d589b27f156f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_7700afa2-5744-474f-aa97-d589b27f156f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_317b1f32-ada7-4073-b491-6975ab7d66b7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_317b1f32-ada7-4073-b491-6975ab7d66b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_5c062b92-7477-4d9a-ab04-31a23930963c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_5c062b92-7477-4d9a-ab04-31a23930963c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_061d7dd1-8d5e-4119-b94f-cb4aef96f412" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:to="loc_us-gaap_DerivativeAssets_061d7dd1-8d5e-4119-b94f-cb4aef96f412" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ShortTermInvestmentsFairValue_1f8297a2-79b9-473e-9875-e7f145b12d42" xlink:href="fnf-20201231.xsd#fnf_ShortTermInvestmentsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:to="loc_fnf_ShortTermInvestmentsFairValue_1f8297a2-79b9-473e-9875-e7f145b12d42" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsFairValueDisclosure_80c6384e-4c86-460b-89f4-bbb33dabd6f6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:to="loc_us-gaap_OtherAssetsFairValueDisclosure_80c6384e-4c86-460b-89f4-bbb33dabd6f6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_efc78b3c-12bb-4d29-ba95-a9b0eebb310a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_a51533c2-9b30-4bbc-8104-c8598ff37044" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_efc78b3c-12bb-4d29-ba95-a9b0eebb310a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_be80825f-387a-45f4-a192-acb337554613" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_d29946b1-81b6-40fa-9d4f-2549fdb9154a" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_be80825f-387a-45f4-a192-acb337554613" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsFairValue_b1b9675d-e311-4b37-90f8-0e8fc5fc7e02" xlink:href="fnf-20201231.xsd#fnf_FuturePolicyBenefitsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_be80825f-387a-45f4-a192-acb337554613" xlink:to="loc_fnf_FuturePolicyBenefitsFairValue_b1b9675d-e311-4b37-90f8-0e8fc5fc7e02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsAbstract_0438302b-0db3-456d-b3c6-09d270ae9aed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_d29946b1-81b6-40fa-9d4f-2549fdb9154a" xlink:to="loc_us-gaap_DerivativeAssetsAbstract_0438302b-0db3-456d-b3c6-09d270ae9aed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_f0fc28a2-91c7-4ff0-b828-451a9fee2cd6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetsAbstract_0438302b-0db3-456d-b3c6-09d270ae9aed" xlink:to="loc_us-gaap_DerivativeLiabilities_f0fc28a2-91c7-4ff0-b828-451a9fee2cd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialLiabilitiesFairValueDisclosure_4d9dc906-42ac-488b-8e38-fb031f56b83d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialLiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_d29946b1-81b6-40fa-9d4f-2549fdb9154a" xlink:to="loc_us-gaap_FinancialLiabilitiesFairValueDisclosure_4d9dc906-42ac-488b-8e38-fb031f56b83d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_3029de2f-1e10-4690-a87d-79808ac7a64d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_d29946b1-81b6-40fa-9d4f-2549fdb9154a" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_3029de2f-1e10-4690-a87d-79808ac7a64d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c4ed90bf-2e7d-427b-b894-b453296fb49e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_d29946b1-81b6-40fa-9d4f-2549fdb9154a" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c4ed90bf-2e7d-427b-b894-b453296fb49e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_3342f114-aab5-4e90-b9b9-9bdc4451e76a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c4ed90bf-2e7d-427b-b894-b453296fb49e" xlink:to="loc_us-gaap_FinancialInstrumentAxis_3342f114-aab5-4e90-b9b9-9bdc4451e76a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3342f114-aab5-4e90-b9b9-9bdc4451e76a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_3342f114-aab5-4e90-b9b9-9bdc4451e76a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3342f114-aab5-4e90-b9b9-9bdc4451e76a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_3342f114-aab5-4e90-b9b9-9bdc4451e76a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_31aed4cb-e8f2-4ddf-9df5-81c0e452c334" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_31aed4cb-e8f2-4ddf-9df5-81c0e452c334" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_56b396fc-cc55-487d-b2e8-946f06534984" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_56b396fc-cc55-487d-b2e8-946f06534984" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_9f01a803-e819-436c-8f73-9f49946f077d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_9f01a803-e819-436c-8f73-9f49946f077d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_f2effca9-5936-4bca-b7a6-89365a6e7042" xlink:href="fnf-20201231.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_fnf_HybridsMember_f2effca9-5936-4bca-b7a6-89365a6e7042" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_89bd36c5-589a-4d40-8847-03dc65d8fc41" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_89bd36c5-589a-4d40-8847-03dc65d8fc41" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_3dd03cb1-a6c3-443a-8e4d-5194f2f1a2e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_3dd03cb1-a6c3-443a-8e4d-5194f2f1a2e7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_4c77d305-f704-43cd-8339-6c0d2a308dde" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_4c77d305-f704-43cd-8339-6c0d2a308dde" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_9e8ba841-8c5e-415a-a088-4a323ec3fea7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_9e8ba841-8c5e-415a-a088-4a323ec3fea7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_ff61c2e3-18d7-467e-983f-3970c3602b4c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_CommonStockMember_ff61c2e3-18d7-467e-983f-3970c3602b4c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_ff113a79-6b69-462d-b1f7-01bfd5b164e2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_PreferredStockMember_ff113a79-6b69-462d-b1f7-01bfd5b164e2" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementsMember_d0513802-142b-4818-860e-859b48f1efa7" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_fnf_SubscriptionAgreementsMember_d0513802-142b-4818-860e-859b48f1efa7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermInvestmentsMember_5f8e7061-e5fe-4b86-8751-e94be087dcc3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLongTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a07eca54-57d8-44cd-8910-2b112632ff08" xlink:to="loc_us-gaap_OtherLongTermInvestmentsMember_5f8e7061-e5fe-4b86-8751-e94be087dcc3" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_7187f2ed-af74-43ee-9ded-a35da66c8046" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c4ed90bf-2e7d-427b-b894-b453296fb49e" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_7187f2ed-af74-43ee-9ded-a35da66c8046" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_7187f2ed-af74-43ee-9ded-a35da66c8046_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_7187f2ed-af74-43ee-9ded-a35da66c8046" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_7187f2ed-af74-43ee-9ded-a35da66c8046_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_f90b27fd-ce51-4cbe-ae0d-802dd78e721c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_7187f2ed-af74-43ee-9ded-a35da66c8046" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_f90b27fd-ce51-4cbe-ae0d-802dd78e721c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedIndexAnnuityMember_cfa2b83b-4390-4038-97ec-523d88938e75" xlink:href="fnf-20201231.xsd#fnf_FixedIndexAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_f90b27fd-ce51-4cbe-ae0d-802dd78e721c" xlink:to="loc_fnf_FixedIndexAnnuityMember_cfa2b83b-4390-4038-97ec-523d88938e75" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_1c3ea0df-c08f-43ef-afeb-27cfdde1b657" xlink:href="fnf-20201231.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_f90b27fd-ce51-4cbe-ae0d-802dd78e721c" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_1c3ea0df-c08f-43ef-afeb-27cfdde1b657" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_e079ccc5-e3b1-42d9-bcaa-8d48e0c8f9c7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c4ed90bf-2e7d-427b-b894-b453296fb49e" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_e079ccc5-e3b1-42d9-bcaa-8d48e0c8f9c7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e079ccc5-e3b1-42d9-bcaa-8d48e0c8f9c7_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_e079ccc5-e3b1-42d9-bcaa-8d48e0c8f9c7" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e079ccc5-e3b1-42d9-bcaa-8d48e0c8f9c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_90efa5ef-df7b-4480-bbde-d88c8c932128" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_e079ccc5-e3b1-42d9-bcaa-8d48e0c8f9c7" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_90efa5ef-df7b-4480-bbde-d88c8c932128" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_963ccdfd-cf9b-4628-a6c7-ead9423706c4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_90efa5ef-df7b-4480-bbde-d88c8c932128" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_963ccdfd-cf9b-4628-a6c7-ead9423706c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_0a58efa6-6279-4040-9294-942072994979" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_90efa5ef-df7b-4480-bbde-d88c8c932128" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_0a58efa6-6279-4040-9294-942072994979" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_3aed5ebd-e873-408d-9165-2857e455c800" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_90efa5ef-df7b-4480-bbde-d88c8c932128" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_3aed5ebd-e873-408d-9165-2857e455c800" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_42202454-5a90-48a0-8156-ca1681d6c701" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_c4ed90bf-2e7d-427b-b894-b453296fb49e" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_42202454-5a90-48a0-8156-ca1681d6c701" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_42202454-5a90-48a0-8156-ca1681d6c701_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_42202454-5a90-48a0-8156-ca1681d6c701" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_42202454-5a90-48a0-8156-ca1681d6c701_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_386be878-893c-4d30-8424-3ff0aeb70251" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_42202454-5a90-48a0-8156-ca1681d6c701" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_386be878-893c-4d30-8424-3ff0aeb70251" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_a85d707f-234c-4cd4-b65f-51a8648c1a99" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_386be878-893c-4d30-8424-3ff0aeb70251" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_a85d707f-234c-4cd4-b65f-51a8648c1a99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_5ce4de3e-cc7a-4f0b-818f-2b2aef2ff668" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_386be878-893c-4d30-8424-3ff0aeb70251" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_5ce4de3e-cc7a-4f0b-818f-2b2aef2ff668" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_75a065f9-5773-47f7-baeb-12585cc5bdf3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_386be878-893c-4d30-8424-3ff0aeb70251" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_75a065f9-5773-47f7-baeb-12585cc5bdf3" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsNarrativeDetail" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstrumentsNarrativeDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsNarrativeDetail" xlink:type="extended" id="i8e60eacb31944d5384daabf27b9fc2ea_FairValueofFinancialInstrumentsNarrativeDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5a137b12-e7df-4966-94ac-17d9e2339160" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativePriceRiskOptionStrikePrice_088d164c-fb63-4c6a-99fd-a94ee8e2bb60" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativePriceRiskOptionStrikePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5a137b12-e7df-4966-94ac-17d9e2339160" xlink:to="loc_us-gaap_DerivativePriceRiskOptionStrikePrice_088d164c-fb63-4c6a-99fd-a94ee8e2bb60" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ForwardPurchaseAgreementFairValueMeasurementPercent_25fdda92-f498-4994-bbd2-aade2e8f9b0d" xlink:href="fnf-20201231.xsd#fnf_ForwardPurchaseAgreementFairValueMeasurementPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5a137b12-e7df-4966-94ac-17d9e2339160" xlink:to="loc_fnf_ForwardPurchaseAgreementFairValueMeasurementPercent_25fdda92-f498-4994-bbd2-aade2e8f9b0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_257ff705-6198-43b1-b670-3cf0f1a0a505" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5a137b12-e7df-4966-94ac-17d9e2339160" xlink:to="loc_us-gaap_EquityMethodInvestments_257ff705-6198-43b1-b670-3cf0f1a0a505" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_9146c28d-417b-4abd-a1b1-c95d09e8426f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5a137b12-e7df-4966-94ac-17d9e2339160" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_9146c28d-417b-4abd-a1b1-c95d09e8426f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_95f199b6-9868-4b9f-8125-25a28e13b542" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_9146c28d-417b-4abd-a1b1-c95d09e8426f" xlink:to="loc_us-gaap_FinancialInstrumentAxis_95f199b6-9868-4b9f-8125-25a28e13b542" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_95f199b6-9868-4b9f-8125-25a28e13b542_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_95f199b6-9868-4b9f-8125-25a28e13b542" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_95f199b6-9868-4b9f-8125-25a28e13b542_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9fc5c776-5cb2-49dc-b31e-f46dc774aa37" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_95f199b6-9868-4b9f-8125-25a28e13b542" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9fc5c776-5cb2-49dc-b31e-f46dc774aa37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherInvestedAssetsMember_79ebd9fc-830d-49ba-b2c5-c13104826839" xlink:href="fnf-20201231.xsd#fnf_OtherInvestedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9fc5c776-5cb2-49dc-b31e-f46dc774aa37" xlink:to="loc_fnf_OtherInvestedAssetsMember_79ebd9fc-830d-49ba-b2c5-c13104826839" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementsMember_9bd4466a-1a39-433c-a45d-f7a94d3577bc" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9fc5c776-5cb2-49dc-b31e-f46dc774aa37" xlink:to="loc_fnf_SubscriptionAgreementsMember_9bd4466a-1a39-433c-a45d-f7a94d3577bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_cfe3725a-ba89-4a27-bfc2-a437bbe3694e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_9146c28d-417b-4abd-a1b1-c95d09e8426f" xlink:to="loc_us-gaap_ValuationTechniqueAxis_cfe3725a-ba89-4a27-bfc2-a437bbe3694e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_cfe3725a-ba89-4a27-bfc2-a437bbe3694e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationTechniqueAxis_cfe3725a-ba89-4a27-bfc2-a437bbe3694e" xlink:to="loc_us-gaap_ValuationTechniqueDomain_cfe3725a-ba89-4a27-bfc2-a437bbe3694e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_6a2a88a6-f685-440f-af30-64c366fd5cdd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationTechniqueAxis_cfe3725a-ba89-4a27-bfc2-a437bbe3694e" xlink:to="loc_us-gaap_ValuationTechniqueDomain_6a2a88a6-f685-440f-af30-64c366fd5cdd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeApproachValuationTechniqueMember_4917c8b7-5b3d-4286-8da5-0cd175dacea3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeApproachValuationTechniqueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_6a2a88a6-f685-440f-af30-64c366fd5cdd" xlink:to="loc_us-gaap_IncomeApproachValuationTechniqueMember_4917c8b7-5b3d-4286-8da5-0cd175dacea3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_61102ac8-d4c1-4a20-888a-563fd853d2a0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_9146c28d-417b-4abd-a1b1-c95d09e8426f" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_61102ac8-d4c1-4a20-888a-563fd853d2a0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_61102ac8-d4c1-4a20-888a-563fd853d2a0_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_61102ac8-d4c1-4a20-888a-563fd853d2a0" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_61102ac8-d4c1-4a20-888a-563fd853d2a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e3ee5bff-488f-43c1-a2bc-8cacc33c11ce" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_61102ac8-d4c1-4a20-888a-563fd853d2a0" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e3ee5bff-488f-43c1-a2bc-8cacc33c11ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_c62181df-651b-46da-869a-780f88aed0a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e3ee5bff-488f-43c1-a2bc-8cacc33c11ce" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_c62181df-651b-46da-869a-780f88aed0a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_8f3a6181-19ff-4298-8062-55234f0c94f6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e3ee5bff-488f-43c1-a2bc-8cacc33c11ce" xlink:to="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_8f3a6181-19ff-4298-8062-55234f0c94f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0ff141d2-a070-4971-a0a4-971eb2ebb1e6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_9146c28d-417b-4abd-a1b1-c95d09e8426f" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0ff141d2-a070-4971-a0a4-971eb2ebb1e6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_0ff141d2-a070-4971-a0a4-971eb2ebb1e6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0ff141d2-a070-4971-a0a4-971eb2ebb1e6" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_0ff141d2-a070-4971-a0a4-971eb2ebb1e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_ecbb4118-71d0-4501-865a-f8fe1752641d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0ff141d2-a070-4971-a0a4-971eb2ebb1e6" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_ecbb4118-71d0-4501-865a-f8fe1752641d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_1c14a5f3-b24d-47d3-94a1-8efde96d0c8c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_ecbb4118-71d0-4501-865a-f8fe1752641d" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_1c14a5f3-b24d-47d3-94a1-8efde96d0c8c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail" xlink:type="extended" id="i54038bf9b19a4179a623210cba74c5a4_FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_309dc952-a28f-466b-9a64-20345d55ccb0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_309dc952-a28f-466b-9a64-20345d55ccb0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_20db0b14-c017-46d7-b4d4-da5be9b77d4b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_20db0b14-c017-46d7-b4d4-da5be9b77d4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsQuotedPrices_09839d6c-b10a-4bc3-bfca-2f2b2e210625" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsQuotedPrices"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsQuotedPrices_09839d6c-b10a-4bc3-bfca-2f2b2e210625" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputYield_3f1fc593-0114-4433-a9ca-3706fc9f35e6" xlink:href="fnf-20201231.xsd#fnf_FairValueInputYield"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputYield_3f1fc593-0114-4433-a9ca-3706fc9f35e6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiMeasurementInput_cec49e28-cd33-4af1-b684-740250a48cef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNiMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_us-gaap_EquitySecuritiesFvNiMeasurementInput_cec49e28-cd33-4af1-b684-740250a48cef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsBlackScholesModel_05383ead-62e3-41ce-859f-9f91d6ca998a" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsBlackScholesModel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsBlackScholesModel_05383ead-62e3-41ce-859f-9f91d6ca998a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsNonPerformanceSpread_d754fd32-df73-4f8b-b76e-8a32e49d2c9c" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsNonPerformanceSpread"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsNonPerformanceSpread_d754fd32-df73-4f8b-b76e-8a32e49d2c9c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RiskMarginToReflectUncertainty_ff5f40d4-72fa-4091-969c-91f562769adb" xlink:href="fnf-20201231.xsd#fnf_RiskMarginToReflectUncertainty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_RiskMarginToReflectUncertainty_ff5f40d4-72fa-4091-969c-91f562769adb" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsMarketValueOfOption_ba3d88bf-a5c7-4bfc-958c-427d770ab258" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsMarketValueOfOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsMarketValueOfOption_ba3d88bf-a5c7-4bfc-958c-427d770ab258" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsTreasuryRates_2dbae847-c13f-479d-b339-dcdb1fd148ec" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsTreasuryRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsTreasuryRates_2dbae847-c13f-479d-b339-dcdb1fd148ec" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsMortalityMultiplier_86f4a16b-600a-4228-8ffa-d900132abfb3" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsMortalityMultiplier"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsMortalityMultiplier_86f4a16b-600a-4228-8ffa-d900132abfb3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsSurrenderRates_23ce83fc-505e-4ad8-abfe-f8e69f81a79d" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsSurrenderRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsSurrenderRates_23ce83fc-505e-4ad8-abfe-f8e69f81a79d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsPartialWithdrawals_757771fa-ae4a-4db1-8a2a-9281dbb80d12" xlink:href="fnf-20201231.xsd#fnf_FairValueInputsPartialWithdrawals"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputsPartialWithdrawals_757771fa-ae4a-4db1-8a2a-9281dbb80d12" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputOptionCost_56e76c30-43b1-4c9f-b2b4-e3885813ccac" xlink:href="fnf-20201231.xsd#fnf_FairValueInputOptionCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_fnf_FairValueInputOptionCost_56e76c30-43b1-4c9f-b2b4-e3885813ccac" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_0baf4e76-4ede-4e2a-b872-911ad3951524" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_0dfe8782-74c6-4577-b0c1-b3c3bf424e32" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:to="loc_us-gaap_FinancialInstrumentAxis_0dfe8782-74c6-4577-b0c1-b3c3bf424e32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0dfe8782-74c6-4577-b0c1-b3c3bf424e32_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_0dfe8782-74c6-4577-b0c1-b3c3bf424e32" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0dfe8782-74c6-4577-b0c1-b3c3bf424e32_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_0dfe8782-74c6-4577-b0c1-b3c3bf424e32" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_1c1bbbda-5eb7-474d-8b94-8c650a8ff195" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_1c1bbbda-5eb7-474d-8b94-8c650a8ff195" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_6cf61b33-f710-4431-b4dc-16a54f24b3b5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_6cf61b33-f710-4431-b4dc-16a54f24b3b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_e95fa33c-f6ab-4c88-a148-d12489162357" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_e95fa33c-f6ab-4c88-a148-d12489162357" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_b7adfc1f-7d22-48c0-a447-c4c16999f609" xlink:href="fnf-20201231.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_fnf_HybridsMember_b7adfc1f-7d22-48c0-a447-c4c16999f609" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_b82eb5a0-3fe0-4afc-b36c-148caba2d631" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_b82eb5a0-3fe0-4afc-b36c-148caba2d631" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_5f132f43-4d6a-428d-9f28-b17c4389aee5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_5f132f43-4d6a-428d-9f28-b17c4389aee5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c1210d24-cf27-4460-9888-8c34c5bdcea8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c1210d24-cf27-4460-9888-8c34c5bdcea8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_5a6ef5e9-7877-45ff-8dde-8aa6ab588fb1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_us-gaap_EquitySecuritiesMember_5a6ef5e9-7877-45ff-8dde-8aa6ab588fb1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherInvestedAssetsMember_126c376f-eb88-4f2a-bb94-ef74749a1410" xlink:href="fnf-20201231.xsd#fnf_OtherInvestedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_fnf_OtherInvestedAssetsMember_126c376f-eb88-4f2a-bb94-ef74749a1410" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CreditLinkedNoteMember_a66a49f0-d34f-4834-a28b-17fc8ec82472" xlink:href="fnf-20201231.xsd#fnf_CreditLinkedNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_fnf_CreditLinkedNoteMember_a66a49f0-d34f-4834-a28b-17fc8ec82472" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsNonperformanceRiskSpreadMember_66c4e7dd-cd07-4215-8d30-f91724d96788" xlink:href="fnf-20201231.xsd#fnf_FuturePolicyBenefitsNonperformanceRiskSpreadMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3d4b5539-45a7-4d53-a403-d06ac7b1f84b" xlink:to="loc_fnf_FuturePolicyBenefitsNonperformanceRiskSpreadMember_66c4e7dd-cd07-4215-8d30-f91724d96788" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_70731669-79a6-48a9-a85a-b0e3f94fb1bb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:to="loc_us-gaap_ValuationTechniqueAxis_70731669-79a6-48a9-a85a-b0e3f94fb1bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_70731669-79a6-48a9-a85a-b0e3f94fb1bb_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationTechniqueAxis_70731669-79a6-48a9-a85a-b0e3f94fb1bb" xlink:to="loc_us-gaap_ValuationTechniqueDomain_70731669-79a6-48a9-a85a-b0e3f94fb1bb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_ef3d39ad-571c-4e6a-876e-b528723919e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationTechniqueAxis_70731669-79a6-48a9-a85a-b0e3f94fb1bb" xlink:to="loc_us-gaap_ValuationTechniqueDomain_ef3d39ad-571c-4e6a-876e-b528723919e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketApproachValuationTechniqueMember_c34116a1-6591-4f82-9ae9-2e1c329f1357" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MarketApproachValuationTechniqueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_ef3d39ad-571c-4e6a-876e-b528723919e0" xlink:to="loc_us-gaap_MarketApproachValuationTechniqueMember_c34116a1-6591-4f82-9ae9-2e1c329f1357" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ThirdPartyValuationTechniqueMember_519b4264-9641-4df4-848e-0c55aacee521" xlink:href="fnf-20201231.xsd#fnf_ThirdPartyValuationTechniqueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_ef3d39ad-571c-4e6a-876e-b528723919e0" xlink:to="loc_fnf_ThirdPartyValuationTechniqueMember_519b4264-9641-4df4-848e-0c55aacee521" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeApproachValuationTechniqueMember_5226e906-033e-4b02-82d7-2f47e8ebb77d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeApproachValuationTechniqueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_ef3d39ad-571c-4e6a-876e-b528723919e0" xlink:to="loc_us-gaap_IncomeApproachValuationTechniqueMember_5226e906-033e-4b02-82d7-2f47e8ebb77d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BlackScholesModelMember_aa9cc6be-20e2-435c-8a4c-3b0551089fee" xlink:href="fnf-20201231.xsd#fnf_BlackScholesModelMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_ef3d39ad-571c-4e6a-876e-b528723919e0" xlink:to="loc_fnf_BlackScholesModelMember_aa9cc6be-20e2-435c-8a4c-3b0551089fee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_df98b712-d376-4555-9e9b-5359b4b18065" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDiscountedCashFlowMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_ef3d39ad-571c-4e6a-876e-b528723919e0" xlink:to="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_df98b712-d376-4555-9e9b-5359b4b18065" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_6e9bca2d-11b5-474b-89f0-d7310f397c3f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_6e9bca2d-11b5-474b-89f0-d7310f397c3f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_6e9bca2d-11b5-474b-89f0-d7310f397c3f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_6e9bca2d-11b5-474b-89f0-d7310f397c3f" xlink:to="loc_us-gaap_RelatedPartyDomain_6e9bca2d-11b5-474b-89f0-d7310f397c3f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d6b12ef0-b1d7-4b7a-afc0-95f76c43c541" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_6e9bca2d-11b5-474b-89f0-d7310f397c3f" xlink:to="loc_us-gaap_RelatedPartyDomain_d6b12ef0-b1d7-4b7a-afc0-95f76c43c541" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_7ffe76bf-a535-45a7-99a1-1f70ba998671" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_d6b12ef0-b1d7-4b7a-afc0-95f76c43c541" xlink:to="loc_srt_AffiliatedEntityMember_7ffe76bf-a535-45a7-99a1-1f70ba998671" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_650c38f6-a81b-4848-a127-a0361d25e429" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_650c38f6-a81b-4848-a127-a0361d25e429" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_650c38f6-a81b-4848-a127-a0361d25e429_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_650c38f6-a81b-4848-a127-a0361d25e429" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_650c38f6-a81b-4848-a127-a0361d25e429_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_d1a50ace-08ed-4a03-ae07-c317423a7352" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_650c38f6-a81b-4848-a127-a0361d25e429" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_d1a50ace-08ed-4a03-ae07-c317423a7352" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsMember_b70084a6-7bea-492b-a000-028445ba866c" xlink:href="fnf-20201231.xsd#fnf_FuturePolicyBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d1a50ace-08ed-4a03-ae07-c317423a7352" xlink:to="loc_fnf_FuturePolicyBenefitsMember_b70084a6-7bea-492b-a000-028445ba866c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedIndexAnnuityMember_9dbeff79-d43b-4c5c-ae52-f4da465a5df1" xlink:href="fnf-20201231.xsd#fnf_FixedIndexAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_d1a50ace-08ed-4a03-ae07-c317423a7352" xlink:to="loc_fnf_FixedIndexAnnuityMember_9dbeff79-d43b-4c5c-ae52-f4da465a5df1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_5a0b1cf1-ee9c-4fe6-99a1-7789bf58977f" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:to="loc_srt_RangeAxis_5a0b1cf1-ee9c-4fe6-99a1-7789bf58977f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5a0b1cf1-ee9c-4fe6-99a1-7789bf58977f_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_5a0b1cf1-ee9c-4fe6-99a1-7789bf58977f" xlink:to="loc_srt_RangeMember_5a0b1cf1-ee9c-4fe6-99a1-7789bf58977f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_64ba743b-41b7-4c67-a691-71c4de6e2df1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_5a0b1cf1-ee9c-4fe6-99a1-7789bf58977f" xlink:to="loc_srt_RangeMember_64ba743b-41b7-4c67-a691-71c4de6e2df1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f59d0bf5-6af5-41dc-b246-ec89067e59de" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_64ba743b-41b7-4c67-a691-71c4de6e2df1" xlink:to="loc_srt_MinimumMember_f59d0bf5-6af5-41dc-b246-ec89067e59de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_8d816580-535c-42ff-a770-1b4d4e2b7730" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_64ba743b-41b7-4c67-a691-71c4de6e2df1" xlink:to="loc_srt_MaximumMember_8d816580-535c-42ff-a770-1b4d4e2b7730" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_24ce66cf-4881-4231-9349-eb58d444a584" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_WeightedAverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_64ba743b-41b7-4c67-a691-71c4de6e2df1" xlink:to="loc_srt_WeightedAverageMember_24ce66cf-4881-4231-9349-eb58d444a584" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_520190a3-d28a-42d5-9189-79957e5d496d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_4dd3d127-3f10-4f91-8ba4-d019ae789726" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_520190a3-d28a-42d5-9189-79957e5d496d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_520190a3-d28a-42d5-9189-79957e5d496d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_520190a3-d28a-42d5-9189-79957e5d496d" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_520190a3-d28a-42d5-9189-79957e5d496d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_520190a3-d28a-42d5-9189-79957e5d496d" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_821f444b-680d-4c08-a480-75db0b9830f5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:to="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_821f444b-680d-4c08-a480-75db0b9830f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputSharePriceMember_dd44db56-aeb3-4f7a-bbf4-02bb64b80678" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputSharePriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:to="loc_us-gaap_MeasurementInputSharePriceMember_dd44db56-aeb3-4f7a-bbf4-02bb64b80678" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputPriceVolatilityMember_8dfc5275-94cb-48f8-8a86-aedf82f8a8c0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputPriceVolatilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:to="loc_us-gaap_MeasurementInputPriceVolatilityMember_8dfc5275-94cb-48f8-8a86-aedf82f8a8c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputExpectedDividendRateMember_69466932-a3f5-4e40-ab25-39fd5eb25718" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputExpectedDividendRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:to="loc_us-gaap_MeasurementInputExpectedDividendRateMember_69466932-a3f5-4e40-ab25-39fd5eb25718" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDiscountRateMember_5504621d-1623-425f-8622-0b3cacd7b35e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputDiscountRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:to="loc_us-gaap_MeasurementInputDiscountRateMember_5504621d-1623-425f-8622-0b3cacd7b35e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EBITDAMultipleMember_9c5cd298-b6bd-4988-bcb3-cf47788c099c" xlink:href="fnf-20201231.xsd#fnf_EBITDAMultipleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_d3dc9b02-6142-4244-84df-de0eb46666a7" xlink:to="loc_fnf_EBITDAMultipleMember_9c5cd298-b6bd-4988-bcb3-cf47788c099c" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail" xlink:type="extended" id="i430d20bd10e7416bb6d6b082c231aae0_FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_a5798751-8633-4d39-a5e3-0cd663c98280" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_179dd963-3ad9-4355-b839-810747ef4abf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_a5798751-8633-4d39-a5e3-0cd663c98280" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_179dd963-3ad9-4355-b839-810747ef4abf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_3568218a-f769-4d63-a1ad-b9b55e13f932" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_179dd963-3ad9-4355-b839-810747ef4abf" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_3568218a-f769-4d63-a1ad-b9b55e13f932" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_3568218a-f769-4d63-a1ad-b9b55e13f932" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_f0649ab3-bc57-4279-9810-94d1da36f0b0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_f0649ab3-bc57-4279-9810-94d1da36f0b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinations_04f1dd47-2d4e-4d79-bab2-90c4e5f329bd" xlink:href="fnf-20201231.xsd#fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinations_04f1dd47-2d4e-4d79-bab2-90c4e5f329bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_ad9726eb-2273-4144-a495-da801a80ec6d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_ad9726eb-2273-4144-a495-da801a80ec6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_009b9930-8442-468f-a739-93b574b40bee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_009b9930-8442-468f-a739-93b574b40bee" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_da68e1a6-3281-4800-a41c-9d313c82bc0b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_da68e1a6-3281-4800-a41c-9d313c82bc0b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_2023c03a-3233-4ec5-892b-01f72bda7eac" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_2023c03a-3233-4ec5-892b-01f72bda7eac" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_e2ff5c5b-a9ee-420b-bd92-7ae344b3bc71" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_e2ff5c5b-a9ee-420b-bd92-7ae344b3bc71" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_2ae2bd4f-fa1e-45b8-a828-861057b6a327" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_433e6010-a970-412f-b454-719f2091428e" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_2ae2bd4f-fa1e-45b8-a828-861057b6a327" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_4b34e498-be58-4405-8eae-4f5a3644b16d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetRecurringBasisStillHeldUnrealizedGainLossOci_50ccc2e6-456a-4f34-b902-4dca57abc1a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetRecurringBasisStillHeldUnrealizedGainLossOci"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_3568218a-f769-4d63-a1ad-b9b55e13f932" xlink:to="loc_us-gaap_FairValueAssetRecurringBasisStillHeldUnrealizedGainLossOci_50ccc2e6-456a-4f34-b902-4dca57abc1a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_179dd963-3ad9-4355-b839-810747ef4abf" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_4babc237-499b-4cea-932e-0916de252b75" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_4babc237-499b-4cea-932e-0916de252b75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisBusinessCombinations_054d04e0-4d73-4cbf-a70e-306148e7c900" xlink:href="fnf-20201231.xsd#fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisBusinessCombinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisBusinessCombinations_054d04e0-4d73-4cbf-a70e-306148e7c900" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_a0a6779d-1aae-453c-ba3a-a2296418afe2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_a0a6779d-1aae-453c-ba3a-a2296418afe2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_1b98ca07-6e56-4e5b-9616-92481cb03ea4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_1b98ca07-6e56-4e5b-9616-92481cb03ea4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_0dea062c-7b2c-442a-9b5f-f7299617ff11" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_0dea062c-7b2c-442a-9b5f-f7299617ff11" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales_14148f2f-10b2-43fd-9cde-484d21f89446" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales_14148f2f-10b2-43fd-9cde-484d21f89446" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_559c5ea4-4382-4572-a2cf-5b0a87705d21" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_559c5ea4-4382-4572-a2cf-5b0a87705d21" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet_ccb0d7c6-fc50-44c1-81f6-0ae5ee8957b8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_f7a5b183-094b-408c-91be-3d5e1e7f89e5" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet_ccb0d7c6-fc50-44c1-81f6-0ae5ee8957b8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_17a9bc1e-4649-4751-ba9c-4576a483985f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss_6d6a11ec-e6d7-4eff-a60a-83c57b1ee0ca" xlink:href="fnf-20201231.xsd#fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_179dd963-3ad9-4355-b839-810747ef4abf" xlink:to="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss_6d6a11ec-e6d7-4eff-a60a-83c57b1ee0ca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_08bef475-8ca7-4c66-b9d6-f0bc76fe321a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_a5798751-8633-4d39-a5e3-0cd663c98280" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_08bef475-8ca7-4c66-b9d6-f0bc76fe321a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_3cab1fad-c185-4d98-be07-165e2db192ea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_08bef475-8ca7-4c66-b9d6-f0bc76fe321a" xlink:to="loc_us-gaap_FinancialInstrumentAxis_3cab1fad-c185-4d98-be07-165e2db192ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3cab1fad-c185-4d98-be07-165e2db192ea_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_3cab1fad-c185-4d98-be07-165e2db192ea" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_3cab1fad-c185-4d98-be07-165e2db192ea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_3cab1fad-c185-4d98-be07-165e2db192ea" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_e68f5c3d-205e-4313-af76-e463badefada" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_e68f5c3d-205e-4313-af76-e463badefada" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_294d5cd9-b25c-4ca3-9a1a-25bc2f37f1b5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_294d5cd9-b25c-4ca3-9a1a-25bc2f37f1b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_1b43f6b7-6902-4ffd-9271-9055f44fe91c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_1b43f6b7-6902-4ffd-9271-9055f44fe91c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_7144987b-29f1-4fdc-a483-0d6ad28c4ed0" xlink:href="fnf-20201231.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_fnf_HybridsMember_7144987b-29f1-4fdc-a483-0d6ad28c4ed0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_04dc586e-95fc-4ddc-8883-6a74c48dc8f5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_04dc586e-95fc-4ddc-8883-6a74c48dc8f5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_cc8cf125-bc58-4cd4-b8ce-65147b7a6289" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_cc8cf125-bc58-4cd4-b8ce-65147b7a6289" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c8de1896-daa3-4971-8463-20addb3b099b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c8de1896-daa3-4971-8463-20addb3b099b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_2eb4c5c9-f8db-4485-8ae4-c7486bf45e4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_EquitySecuritiesMember_2eb4c5c9-f8db-4485-8ae4-c7486bf45e4f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleEmbeddedDerivativesMember_cb1d904c-f4e8-4d9e-aef2-55dfdefe8175" xlink:href="fnf-20201231.xsd#fnf_AvailableForSaleEmbeddedDerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_fnf_AvailableForSaleEmbeddedDerivativesMember_cb1d904c-f4e8-4d9e-aef2-55dfdefe8175" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankLoanObligationsMember_ca8f072f-f963-4959-9528-d4a5289296dd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BankLoanObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_BankLoanObligationsMember_ca8f072f-f963-4959-9528-d4a5289296dd" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermInvestmentsMember_fa5729cf-aa83-41ff-90e9-dbbc80ebdd0f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLongTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b973381e-f22c-4245-a10b-22db00fea5f3" xlink:to="loc_us-gaap_OtherLongTermInvestmentsMember_fa5729cf-aa83-41ff-90e9-dbbc80ebdd0f" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_75fb93d5-9742-414b-9c65-e63ec28f4265" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_08bef475-8ca7-4c66-b9d6-f0bc76fe321a" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_75fb93d5-9742-414b-9c65-e63ec28f4265" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_75fb93d5-9742-414b-9c65-e63ec28f4265_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_75fb93d5-9742-414b-9c65-e63ec28f4265" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_75fb93d5-9742-414b-9c65-e63ec28f4265_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_196f0428-cca5-4e8c-9c2b-85e9e6c98840" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_75fb93d5-9742-414b-9c65-e63ec28f4265" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_196f0428-cca5-4e8c-9c2b-85e9e6c98840" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsMember_a646d0c7-828c-4f41-9f51-f2187a80c763" xlink:href="fnf-20201231.xsd#fnf_FuturePolicyBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_196f0428-cca5-4e8c-9c2b-85e9e6c98840" xlink:to="loc_fnf_FuturePolicyBenefitsMember_a646d0c7-828c-4f41-9f51-f2187a80c763" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesIncludedInContractholderFundsMember_332ce08f-a6ad-45e9-be01-b07fc6790bc1" xlink:href="fnf-20201231.xsd#fnf_EmbeddedDerivativesIncludedInContractholderFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_196f0428-cca5-4e8c-9c2b-85e9e6c98840" xlink:to="loc_fnf_EmbeddedDerivativesIncludedInContractholderFundsMember_332ce08f-a6ad-45e9-be01-b07fc6790bc1" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails" xlink:type="extended" id="id2bea5d78979407abed071c4e09ad8df_FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b7645c3b-9913-493d-b559-939712f84a60" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b7645c3b-9913-493d-b559-939712f84a60" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FHLBCommonStockFairValue_1789b44a-c763-4b2b-9c1c-922feacf2ae3" xlink:href="fnf-20201231.xsd#fnf_FHLBCommonStockFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_fnf_FHLBCommonStockFairValue_1789b44a-c763-4b2b-9c1c-922feacf2ae3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentsCommercialMortgageLoansFairValueDisclosure_4063c6ae-0636-431b-85f1-57717eb5eade" xlink:href="fnf-20201231.xsd#fnf_InvestmentsCommercialMortgageLoansFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_fnf_InvestmentsCommercialMortgageLoansFairValueDisclosure_4063c6ae-0636-431b-85f1-57717eb5eade" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentsResidentialMortgageLoansFairValueDisclosure_b05d5981-5948-4dbd-ba00-74269a06d6f2" xlink:href="fnf-20201231.xsd#fnf_InvestmentsResidentialMortgageLoansFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_fnf_InvestmentsResidentialMortgageLoansFairValueDisclosure_b05d5981-5948-4dbd-ba00-74269a06d6f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PolicyLoansFairValue_1d8f0184-3ff8-4b14-b59f-6be5e3ed2012" xlink:href="fnf-20201231.xsd#fnf_PolicyLoansFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_fnf_PolicyLoansFairValue_1d8f0184-3ff8-4b14-b59f-6be5e3ed2012" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentsAffiliatedBankLoanFairValueDisclosure_06c0b2f5-7602-4a73-b2f4-5b427d79ed3e" xlink:href="fnf-20201231.xsd#fnf_InvestmentsAffiliatedBankLoanFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_fnf_InvestmentsAffiliatedBankLoanFairValueDisclosure_06c0b2f5-7602-4a73-b2f4-5b427d79ed3e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankOwnedLifeInsurance_a3da0d47-c80c-4ad6-93ad-b5fbfda3966c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BankOwnedLifeInsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_us-gaap_BankOwnedLifeInsurance_a3da0d47-c80c-4ad6-93ad-b5fbfda3966c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_2171f596-fdce-4b59-9a98-594ae6228080" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_2171f596-fdce-4b59-9a98-594ae6228080" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AssetscarriedonBalanceSheetatamountsotherthanfairvalue_edb0f534-0c4f-4713-b76e-64ac0b2cf800" xlink:href="fnf-20201231.xsd#fnf_AssetscarriedonBalanceSheetatamountsotherthanfairvalue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5473e56e-3715-4bd0-ba20-0bf1f3add4c5" xlink:to="loc_fnf_AssetscarriedonBalanceSheetatamountsotherthanfairvalue_edb0f534-0c4f-4713-b76e-64ac0b2cf800" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_8887ce5a-308f-4ca5-a661-6cbc998789c5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b7645c3b-9913-493d-b559-939712f84a60" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_8887ce5a-308f-4ca5-a661-6cbc998789c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure_080fef93-b8dd-45d9-9757-f7a10170f351" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_8887ce5a-308f-4ca5-a661-6cbc998789c5" xlink:to="loc_us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure_080fef93-b8dd-45d9-9757-f7a10170f351" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_60a7ffc7-aecd-4fb9-b01e-59905815260d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_8887ce5a-308f-4ca5-a661-6cbc998789c5" xlink:to="loc_us-gaap_DebtInstrumentFairValue_60a7ffc7-aecd-4fb9-b01e-59905815260d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LiabilitiescarriedonBalanceSheetatamountsotherthanfairvalue_5979c030-8819-4e2e-9ec1-ae5e03c16036" xlink:href="fnf-20201231.xsd#fnf_LiabilitiescarriedonBalanceSheetatamountsotherthanfairvalue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_8887ce5a-308f-4ca5-a661-6cbc998789c5" xlink:to="loc_fnf_LiabilitiescarriedonBalanceSheetatamountsotherthanfairvalue_5979c030-8819-4e2e-9ec1-ae5e03c16036" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_481723de-57f7-435c-913a-3e825eccc687" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b7645c3b-9913-493d-b559-939712f84a60" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_481723de-57f7-435c-913a-3e825eccc687" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_be2c7450-d644-4b37-ae21-f9cd53e9fdfa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_481723de-57f7-435c-913a-3e825eccc687" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_be2c7450-d644-4b37-ae21-f9cd53e9fdfa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_be2c7450-d644-4b37-ae21-f9cd53e9fdfa_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_be2c7450-d644-4b37-ae21-f9cd53e9fdfa" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_be2c7450-d644-4b37-ae21-f9cd53e9fdfa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0b6b7e4f-c065-4c34-ad46-d02ccf044254" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_be2c7450-d644-4b37-ae21-f9cd53e9fdfa" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0b6b7e4f-c065-4c34-ad46-d02ccf044254" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_4254a430-13a0-472f-b6d3-b2d71f3ef060" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0b6b7e4f-c065-4c34-ad46-d02ccf044254" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_4254a430-13a0-472f-b6d3-b2d71f3ef060" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_43971e8c-4063-4713-bf5d-d0898486efbb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0b6b7e4f-c065-4c34-ad46-d02ccf044254" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_43971e8c-4063-4713-bf5d-d0898486efbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_4d8ac335-1e8b-48fe-ad11-d0295a68fdef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0b6b7e4f-c065-4c34-ad46-d02ccf044254" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_4d8ac335-1e8b-48fe-ad11-d0295a68fdef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_fbb9dfb4-edda-48c3-8330-f6285978e286" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_481723de-57f7-435c-913a-3e825eccc687" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_fbb9dfb4-edda-48c3-8330-f6285978e286" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_fbb9dfb4-edda-48c3-8330-f6285978e286_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_fbb9dfb4-edda-48c3-8330-f6285978e286" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_fbb9dfb4-edda-48c3-8330-f6285978e286_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c43a2540-0508-4233-ad98-968c8e4fc8b6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_fbb9dfb4-edda-48c3-8330-f6285978e286" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c43a2540-0508-4233-ad98-968c8e4fc8b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_2e2e645b-60bc-4bec-b479-4860118aadcc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c43a2540-0508-4233-ad98-968c8e4fc8b6" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_2e2e645b-60bc-4bec-b479-4860118aadcc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_bc16ae69-9890-49ab-b9e0-b940a3dd1098" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c43a2540-0508-4233-ad98-968c8e4fc8b6" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_bc16ae69-9890-49ab-b9e0-b940a3dd1098" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_ac264415-a843-4511-b839-4c0a55075a38" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_c43a2540-0508-4233-ad98-968c8e4fc8b6" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_ac264415-a843-4511-b839-4c0a55075a38" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsEquityMethodInvestmentsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#FairValueofFinancialInstrumentsEquityMethodInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsEquityMethodInvestmentsDetails" xlink:type="extended" id="ib75601ffa8c54ffc956988401281cb41_FairValueofFinancialInstrumentsEquityMethodInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLineItems_1fd20d25-1432-4016-84b6-9e35b1f90ae7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_ca796bb7-171c-4e81-bdbc-199477cec433" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLineItems_1fd20d25-1432-4016-84b6-9e35b1f90ae7" xlink:to="loc_us-gaap_EquityMethodInvestments_ca796bb7-171c-4e81-bdbc-199477cec433" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_829eabe7-a4cb-4cb8-ae1f-117806920a6f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLineItems_1fd20d25-1432-4016-84b6-9e35b1f90ae7" xlink:to="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_829eabe7-a4cb-4cb8-ae1f-117806920a6f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0f93be20-d9f0-4d8c-9a26-5c4cfd2aac08" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_829eabe7-a4cb-4cb8-ae1f-117806920a6f" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0f93be20-d9f0-4d8c-9a26-5c4cfd2aac08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_0f93be20-d9f0-4d8c-9a26-5c4cfd2aac08_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0f93be20-d9f0-4d8c-9a26-5c4cfd2aac08" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_0f93be20-d9f0-4d8c-9a26-5c4cfd2aac08_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_997da24f-5b1e-468c-9bae-0404f3682433" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_0f93be20-d9f0-4d8c-9a26-5c4cfd2aac08" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_997da24f-5b1e-468c-9bae-0404f3682433" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_17d505f1-eb3f-4185-a70f-a0dc575cca59" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_997da24f-5b1e-468c-9bae-0404f3682433" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember_17d505f1-eb3f-4185-a70f-a0dc575cca59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_553bf1f8-d5f3-4f97-a524-abc935c5629b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_829eabe7-a4cb-4cb8-ae1f-117806920a6f" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_553bf1f8-d5f3-4f97-a524-abc935c5629b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_553bf1f8-d5f3-4f97-a524-abc935c5629b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_553bf1f8-d5f3-4f97-a524-abc935c5629b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_553bf1f8-d5f3-4f97-a524-abc935c5629b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_78d9f26d-96e4-4f63-ae8c-8d5d39756113" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_553bf1f8-d5f3-4f97-a524-abc935c5629b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_78d9f26d-96e4-4f63-ae8c-8d5d39756113" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_11781beb-1d5d-4633-b6c9-139d67b2decf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_78d9f26d-96e4-4f63-ae8c-8d5d39756113" xlink:to="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_11781beb-1d5d-4633-b6c9-139d67b2decf" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Investments" xlink:type="simple" xlink:href="fnf-20201231.xsd#Investments"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Investments" xlink:type="extended" id="i6fe1df9894c84cb483763ae5bf99cec3_Investments"/>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsTables" xlink:type="extended" id="i10777f459ce548f9b3a19f250333e6cd_InvestmentsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsConsolidatedInvestmentsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsConsolidatedInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsConsolidatedInvestmentsDetails" xlink:type="extended" id="icd6a95f8cdf84c85bd7a32b6dacbed39_InvestmentsConsolidatedInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_ae21ad43-e60c-40aa-a2cb-73c2897f4f1c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_fe8220ed-8adf-4da3-92d6-4ed0b8cb3bca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_ae21ad43-e60c-40aa-a2cb-73c2897f4f1c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_fe8220ed-8adf-4da3-92d6-4ed0b8cb3bca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_d80bdc30-b7e8-4f19-9462-3db0c92dafb6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_fe8220ed-8adf-4da3-92d6-4ed0b8cb3bca" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_d80bdc30-b7e8-4f19-9462-3db0c92dafb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_7f2b9540-64e0-4217-97c5-2386cf5bdb29" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_fe8220ed-8adf-4da3-92d6-4ed0b8cb3bca" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_7f2b9540-64e0-4217-97c5-2386cf5bdb29" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_20b8ebba-0b7e-4a72-8787-e9e48306ff33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_fe8220ed-8adf-4da3-92d6-4ed0b8cb3bca" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_20b8ebba-0b7e-4a72-8787-e9e48306ff33" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_ded81c9c-23fb-4a3c-a3cf-92979040a70c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_fe8220ed-8adf-4da3-92d6-4ed0b8cb3bca" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_ded81c9c-23fb-4a3c-a3cf-92979040a70c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_26888932-61e9-43cd-9752-a061510bab58" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_fe8220ed-8adf-4da3-92d6-4ed0b8cb3bca" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_26888932-61e9-43cd-9752-a061510bab58" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_a4b56d4a-aa38-4021-b91d-d395ee404c8e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_ae21ad43-e60c-40aa-a2cb-73c2897f4f1c" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_a4b56d4a-aa38-4021-b91d-d395ee404c8e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_6ef20ace-e2b7-4dd6-b369-aec6f3575f7a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_a4b56d4a-aa38-4021-b91d-d395ee404c8e" xlink:to="loc_us-gaap_FinancialInstrumentAxis_6ef20ace-e2b7-4dd6-b369-aec6f3575f7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6ef20ace-e2b7-4dd6-b369-aec6f3575f7a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_6ef20ace-e2b7-4dd6-b369-aec6f3575f7a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6ef20ace-e2b7-4dd6-b369-aec6f3575f7a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_6ef20ace-e2b7-4dd6-b369-aec6f3575f7a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_8f5c3ce9-29b8-47a4-a0ef-9e2fe526cdf3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_8f5c3ce9-29b8-47a4-a0ef-9e2fe526cdf3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_f5a739e3-ea7e-4e01-8321-303ef092eb54" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_f5a739e3-ea7e-4e01-8321-303ef092eb54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_773ed7ac-8b30-4692-89d1-658ecf1c2321" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_773ed7ac-8b30-4692-89d1-658ecf1c2321" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_19a793af-8709-4618-bf37-e4dcdea3034b" xlink:href="fnf-20201231.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_fnf_HybridsMember_19a793af-8709-4618-bf37-e4dcdea3034b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MunicipalsMember_e558b409-8725-4999-8678-d50d469b1ced" xlink:href="fnf-20201231.xsd#fnf_MunicipalsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_fnf_MunicipalsMember_e558b409-8725-4999-8678-d50d469b1ced" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_e7d630f6-64ff-42a3-96e2-75e21cbbb15a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_e7d630f6-64ff-42a3-96e2-75e21cbbb15a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_3b4c3dbf-2eae-4231-90da-86975347e999" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_3b4c3dbf-2eae-4231-90da-86975347e999" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_3742afa6-b573-4118-bbd8-17a646bc8a43" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ed05683b-4f37-4a06-aea3-94eaea3e8a55" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_3742afa6-b573-4118-bbd8-17a646bc8a43" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsNarrativeDetails" xlink:type="extended" id="i6a7a4f660178407e9a104bf2d0067b2a_InvestmentsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsHeldByInsuranceRegulators_6819e6df-cb5c-4943-834b-5555af228d16" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsHeldByInsuranceRegulators"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_AssetsHeldByInsuranceRegulators_6819e6df-cb5c-4943-834b-5555af228d16" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentNonIncomeProducingFairValueDisclosure_6f8a4932-24f4-4a58-aa2e-25e2425bc114" xlink:href="fnf-20201231.xsd#fnf_InvestmentNonIncomeProducingFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_fnf_InvestmentNonIncomeProducingFairValueDisclosure_6f8a4932-24f4-4a58-aa2e-25e2425bc114" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable_7a9ead8e-600c-4d23-b650-7b7766cb7719" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_InterestReceivable_7a9ead8e-600c-4d23-b650-7b7766cb7719" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1_3a93e7ba-62dc-4655-8f90-ce61bca55883" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1_3a93e7ba-62dc-4655-8f90-ce61bca55883" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageLoansPercentageOfInvestments_6796edcf-1557-40b5-8bc8-8d688b4974fb" xlink:href="fnf-20201231.xsd#fnf_CommercialMortgageLoansPercentageOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_fnf_CommercialMortgageLoansPercentageOfInvestments_6796edcf-1557-40b5-8bc8-8d688b4974fb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioAmortizationPeriod_0b886417-5b0d-4f19-883f-578f9d8eb691" xlink:href="fnf-20201231.xsd#fnf_DebtServiceCoverageRatioAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_fnf_DebtServiceCoverageRatioAmortizationPeriod_0b886417-5b0d-4f19-883f-578f9d8eb691" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoantoValueMaximumThreshold_84e969e9-89a4-44d3-87d7-7a15cc469845" xlink:href="fnf-20201231.xsd#fnf_LoantoValueMaximumThreshold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_fnf_LoantoValueMaximumThreshold_84e969e9-89a4-44d3-87d7-7a15cc469845" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_d9413610-19df-4d85-9d84-179055eaca2b" xlink:href="fnf-20201231.xsd#fnf_ResidentialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_d9413610-19df-4d85-9d84-179055eaca2b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageLoansLocationPercentage_0feaa001-f3bc-488e-856c-c12b073ad2a0" xlink:href="fnf-20201231.xsd#fnf_ResidentialMortgageLoansLocationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_fnf_ResidentialMortgageLoansLocationPercentage_0feaa001-f3bc-488e-856c-c12b073ad2a0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitment_b50a6b6d-fe72-4f9b-9004-b004b28e9516" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_OtherCommitment_b50a6b6d-fe72-4f9b-9004-b004b28e9516" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestments_d8e224de-c5e0-4794-b59e-bd3d1968287c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_OtherInvestments_d8e224de-c5e0-4794-b59e-bd3d1968287c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedBalanceShares_21f6f6df-a231-42c4-a349-c7e5f64d64eb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentOwnedBalanceShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_InvestmentOwnedBalanceShares_21f6f6df-a231-42c4-a349-c7e5f64d64eb" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedAtFairValue_bc4fbf34-97e2-49e0-be50-82fbd269e020" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentOwnedAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_InvestmentOwnedAtFairValue_bc4fbf34-97e2-49e0-be50-82fbd269e020" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_986e1d99-442e-4346-b43c-36b35dd4038a" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_18c3ce42-cd26-45ba-a199-95fef019e6ff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InformationByCategoryOfDebtSecurityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:to="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_18c3ce42-cd26-45ba-a199-95fef019e6ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_18c3ce42-cd26-45ba-a199-95fef019e6ff_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_18c3ce42-cd26-45ba-a199-95fef019e6ff" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_18c3ce42-cd26-45ba-a199-95fef019e6ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_c699a3cd-fd06-4160-b20a-992d4fcb4523" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_18c3ce42-cd26-45ba-a199-95fef019e6ff" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_c699a3cd-fd06-4160-b20a-992d4fcb4523" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesMember_1e46cf9c-df4c-47b2-b78d-c4d750c22fef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableforsaleSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_c699a3cd-fd06-4160-b20a-992d4fcb4523" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesMember_1e46cf9c-df4c-47b2-b78d-c4d750c22fef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_817e4c69-f914-4012-b400-82ea80a7d354" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_c699a3cd-fd06-4160-b20a-992d4fcb4523" xlink:to="loc_us-gaap_ResidentialMortgageMember_817e4c69-f914-4012-b400-82ea80a7d354" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_67c4770a-2f3d-4ca9-95c5-cf07e98dd75a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:to="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_67c4770a-2f3d-4ca9-95c5-cf07e98dd75a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_67c4770a-2f3d-4ca9-95c5-cf07e98dd75a_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_67c4770a-2f3d-4ca9-95c5-cf07e98dd75a" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_67c4770a-2f3d-4ca9-95c5-cf07e98dd75a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_28134d1a-69e3-4176-bb2e-65e7d2820893" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_67c4770a-2f3d-4ca9-95c5-cf07e98dd75a" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_28134d1a-69e3-4176-bb2e-65e7d2820893" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageLoansMember_a7c07534-42aa-478e-835e-35694ffd72dc" xlink:href="fnf-20201231.xsd#fnf_CommercialMortgageLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_28134d1a-69e3-4176-bb2e-65e7d2820893" xlink:to="loc_fnf_CommercialMortgageLoansMember_a7c07534-42aa-478e-835e-35694ffd72dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_48fc8deb-4b4e-4dae-81c3-cc3ebacfcecc" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:to="loc_srt_StatementGeographicalAxis_48fc8deb-4b4e-4dae-81c3-cc3ebacfcecc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_48fc8deb-4b4e-4dae-81c3-cc3ebacfcecc_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_48fc8deb-4b4e-4dae-81c3-cc3ebacfcecc" xlink:to="loc_srt_SegmentGeographicalDomain_48fc8deb-4b4e-4dae-81c3-cc3ebacfcecc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_a7db065b-da96-4647-8c5f-850494768730" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_48fc8deb-4b4e-4dae-81c3-cc3ebacfcecc" xlink:to="loc_srt_SegmentGeographicalDomain_a7db065b-da96-4647-8c5f-850494768730" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_8c7de0f9-4e0c-4062-a909-209d59acf03b" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_a7db065b-da96-4647-8c5f-850494768730" xlink:to="loc_country_US_8c7de0f9-4e0c-4062-a909-209d59acf03b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_28d9e8c4-2736-4e8a-b646-f11d110baed8" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_28d9e8c4-2736-4e8a-b646-f11d110baed8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_28d9e8c4-2736-4e8a-b646-f11d110baed8_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_28d9e8c4-2736-4e8a-b646-f11d110baed8" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_28d9e8c4-2736-4e8a-b646-f11d110baed8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_615092a5-f92e-41dd-892b-cfa57a76bd78" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_28d9e8c4-2736-4e8a-b646-f11d110baed8" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_615092a5-f92e-41dd-892b-cfa57a76bd78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CrescentCapitalBDCInc.Member_b5ca3c4c-d8ca-4da4-aac3-4b9e2027ac12" xlink:href="fnf-20201231.xsd#fnf_CrescentCapitalBDCInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_615092a5-f92e-41dd-892b-cfa57a76bd78" xlink:to="loc_fnf_CrescentCapitalBDCInc.Member_b5ca3c4c-d8ca-4da4-aac3-4b9e2027ac12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GolubCapitalPartners10L.P.Member_cd575315-c9cf-4226-8f69-1be48c0b4d2b" xlink:href="fnf-20201231.xsd#fnf_GolubCapitalPartners10L.P.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_615092a5-f92e-41dd-892b-cfa57a76bd78" xlink:to="loc_fnf_GolubCapitalPartners10L.P.Member_cd575315-c9cf-4226-8f69-1be48c0b4d2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_2ca853e1-143d-4820-ab3c-b563986fc581" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:to="loc_us-gaap_OtherCommitmentsAxis_2ca853e1-143d-4820-ab3c-b563986fc581" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_2ca853e1-143d-4820-ab3c-b563986fc581_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_2ca853e1-143d-4820-ab3c-b563986fc581" xlink:to="loc_us-gaap_OtherCommitmentsDomain_2ca853e1-143d-4820-ab3c-b563986fc581_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_246dd3c8-520f-4976-b350-0839bbd614ba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_2ca853e1-143d-4820-ab3c-b563986fc581" xlink:to="loc_us-gaap_OtherCommitmentsDomain_246dd3c8-520f-4976-b350-0839bbd614ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommitmenttoInvestMember_1250e72a-3bdd-441a-8f3d-546e8fbba9eb" xlink:href="fnf-20201231.xsd#fnf_CommitmenttoInvestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_246dd3c8-520f-4976-b350-0839bbd614ba" xlink:to="loc_fnf_CommitmenttoInvestMember_1250e72a-3bdd-441a-8f3d-546e8fbba9eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e505662c-413f-46d0-ba37-40fceacfdde9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e505662c-413f-46d0-ba37-40fceacfdde9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_e505662c-413f-46d0-ba37-40fceacfdde9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e505662c-413f-46d0-ba37-40fceacfdde9" xlink:to="loc_us-gaap_RelatedPartyDomain_e505662c-413f-46d0-ba37-40fceacfdde9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_790b8004-0d13-4785-8c97-ab50b9b14c7a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e505662c-413f-46d0-ba37-40fceacfdde9" xlink:to="loc_us-gaap_RelatedPartyDomain_790b8004-0d13-4785-8c97-ab50b9b14c7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CannaeHoldingsInc.Member_0187744a-da12-4076-92d6-1a47e693d54e" xlink:href="fnf-20201231.xsd#fnf_CannaeHoldingsInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_790b8004-0d13-4785-8c97-ab50b9b14c7a" xlink:to="loc_fnf_CannaeHoldingsInc.Member_0187744a-da12-4076-92d6-1a47e693d54e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_d0ee0265-76a8-4e24-be59-e491070a6065" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_fce64973-07c4-45fd-8009-0b280f59d686" xlink:to="loc_us-gaap_StatementClassOfStockAxis_d0ee0265-76a8-4e24-be59-e491070a6065" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_d0ee0265-76a8-4e24-be59-e491070a6065_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_d0ee0265-76a8-4e24-be59-e491070a6065" xlink:to="loc_us-gaap_ClassOfStockDomain_d0ee0265-76a8-4e24-be59-e491070a6065_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_7171efcc-fdfa-4b6a-9754-1f21e79c69e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_d0ee0265-76a8-4e24-be59-e491070a6065" xlink:to="loc_us-gaap_ClassOfStockDomain_7171efcc-fdfa-4b6a-9754-1f21e79c69e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_a6f75c3d-13cb-400b-8fe5-71739b2860f6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_7171efcc-fdfa-4b6a-9754-1f21e79c69e0" xlink:to="loc_us-gaap_CommonStockMember_a6f75c3d-13cb-400b-8fe5-71739b2860f6" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails" xlink:type="extended" id="i94ee4918e22a4e21ade54d693393043f_InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_23a98bed-9faf-4492-a125-0d73030ab48f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_23a98bed-9faf-4492-a125-0d73030ab48f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_48fb65f0-e40a-485b-9da3-c68cd07b1734" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_48fb65f0-e40a-485b-9da3-c68cd07b1734" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_bc500826-6147-4870-9b1f-ebe19ab367ab" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_bc500826-6147-4870-9b1f-ebe19ab367ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_eb36913f-dab5-473c-a1c3-7022c83a6f58" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_eb36913f-dab5-473c-a1c3-7022c83a6f58" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostExcludingSingleMaturityDate_66a88bba-a270-4a99-91a1-e2a386121252" xlink:href="fnf-20201231.xsd#fnf_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostExcludingSingleMaturityDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostExcludingSingleMaturityDate_66a88bba-a270-4a99-91a1-e2a386121252" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_cd836f5a-f85a-4d42-b890-496c9fd6049f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_cd836f5a-f85a-4d42-b890-496c9fd6049f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_9d75c10c-125d-4d7f-8cf9-07bf81aa5f6c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_9d75c10c-125d-4d7f-8cf9-07bf81aa5f6c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_184ff550-9baa-4e29-8451-c3c5d663d829" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_184ff550-9baa-4e29-8451-c3c5d663d829" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_3505a96d-5170-4ad0-bc92-3cf22531a001" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_3505a96d-5170-4ad0-bc92-3cf22531a001" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_2ef2bc4e-ebae-4024-acaf-9bda8084f7d4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_2ef2bc4e-ebae-4024-acaf-9bda8084f7d4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_b37a37c9-bd36-4db1-b087-0a2439d70153" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_b37a37c9-bd36-4db1-b087-0a2439d70153" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingSingleMaturityDate_dd1de37f-be55-4ad5-8de9-a3937273847e" xlink:href="fnf-20201231.xsd#fnf_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingSingleMaturityDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingSingleMaturityDate_dd1de37f-be55-4ad5-8de9-a3937273847e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_de40a6a2-2fb1-4d68-acb4-cfde198f6d86" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_de40a6a2-2fb1-4d68-acb4-cfde198f6d86" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleSecuritiesFairValueOnDebtMaturities_011ad722-266e-4f87-89d5-c71564df4c63" xlink:href="fnf-20201231.xsd#fnf_AvailableForSaleSecuritiesFairValueOnDebtMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_fnf_AvailableForSaleSecuritiesFairValueOnDebtMaturities_011ad722-266e-4f87-89d5-c71564df4c63" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_6bdf3c84-1e23-42ed-aa39-7fd6ba791b9b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_ce254fcf-f147-42b5-92da-60dae702bc5e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_6bdf3c84-1e23-42ed-aa39-7fd6ba791b9b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_88050436-f37c-40f5-90df-4ea62fb30660" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_6bdf3c84-1e23-42ed-aa39-7fd6ba791b9b" xlink:to="loc_us-gaap_FinancialInstrumentAxis_88050436-f37c-40f5-90df-4ea62fb30660" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_88050436-f37c-40f5-90df-4ea62fb30660_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_88050436-f37c-40f5-90df-4ea62fb30660" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_88050436-f37c-40f5-90df-4ea62fb30660_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6be3796e-977b-4070-a35d-1c59a2662305" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_88050436-f37c-40f5-90df-4ea62fb30660" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6be3796e-977b-4070-a35d-1c59a2662305" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_27606d3c-8455-457b-8f01-142e1c1ba079" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6be3796e-977b-4070-a35d-1c59a2662305" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_27606d3c-8455-457b-8f01-142e1c1ba079" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_3808d60a-75c7-4597-873c-8cae7cde82fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6be3796e-977b-4070-a35d-1c59a2662305" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_3808d60a-75c7-4597-873c-8cae7cde82fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StructuredHybridsMember_09ad7a84-2b4e-40b0-a977-ac1179033acc" xlink:href="fnf-20201231.xsd#fnf_StructuredHybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6be3796e-977b-4070-a35d-1c59a2662305" xlink:to="loc_fnf_StructuredHybridsMember_09ad7a84-2b4e-40b0-a977-ac1179033acc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_22d396b5-74a0-47b9-9f35-c93574ddfed7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6be3796e-977b-4070-a35d-1c59a2662305" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_22d396b5-74a0-47b9-9f35-c93574ddfed7" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails" xlink:type="extended" id="i4dbbb662205545dbad20f8d38c17f4a8_InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableforsaleAllowanceForCreditLossLineItems_bb4dffc0-ac26-4bd9-a3c3-481971b20d47" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableforsaleAllowanceForCreditLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableforsaleAllowanceForCreditLossLineItems_bb4dffc0-ac26-4bd9-a3c3-481971b20d47" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_7358079b-4bfe-473e-a0c5-00fda26eeead" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_7358079b-4bfe-473e-a0c5-00fda26eeead" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded_15828ba4-a5ac-489f-8244-ba2e4616feba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded_15828ba4-a5ac-489f-8244-ba2e4616feba" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease_68055620-77a0-4c3a-8c54-73bc1666bd0f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease_68055620-77a0-4c3a-8c54-73bc1666bd0f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal_e7d67379-571d-464a-bc23-bb1a3efed793" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal_e7d67379-571d-464a-bc23-bb1a3efed793" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold_799f251e-2c4e-44a4-834b-5292bf09045b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold_799f251e-2c4e-44a4-834b-5292bf09045b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSellBeforeRecovery_8872820a-d43d-4835-9f47-15555352e449" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSellBeforeRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSellBeforeRecovery_8872820a-d43d-4835-9f47-15555352e449" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff_a8e8c215-94b0-4629-8836-0e586ae8c4f6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_c850fb33-0970-4387-b559-1cc4e2c87330" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff_a8e8c215-94b0-4629-8836-0e586ae8c4f6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_8728031a-2e56-4e93-b0ce-4a5dc5337abb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable_736134fe-606b-4b39-870f-1ce1a9ed8cd4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtSecuritiesAvailableforsaleAllowanceForCreditLossLineItems_bb4dffc0-ac26-4bd9-a3c3-481971b20d47" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable_736134fe-606b-4b39-870f-1ce1a9ed8cd4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_040d0777-b005-42c3-9cc8-e9a5f06fdf61" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable_736134fe-606b-4b39-870f-1ce1a9ed8cd4" xlink:to="loc_us-gaap_FinancialInstrumentAxis_040d0777-b005-42c3-9cc8-e9a5f06fdf61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_040d0777-b005-42c3-9cc8-e9a5f06fdf61_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_040d0777-b005-42c3-9cc8-e9a5f06fdf61" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_040d0777-b005-42c3-9cc8-e9a5f06fdf61_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_40b90ff2-f248-4937-8a4a-6decc1358986" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_040d0777-b005-42c3-9cc8-e9a5f06fdf61" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_40b90ff2-f248-4937-8a4a-6decc1358986" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_4882c1d8-a761-4350-a081-72da8891ad9b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_40b90ff2-f248-4937-8a4a-6decc1358986" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_4882c1d8-a761-4350-a081-72da8891ad9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_d21a5ce5-7aa2-4216-9e1e-e9d44a850c71" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_40b90ff2-f248-4937-8a4a-6decc1358986" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_d21a5ce5-7aa2-4216-9e1e-e9d44a850c71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_8c736848-c41d-4172-8916-393b294b4741" xlink:href="fnf-20201231.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_40b90ff2-f248-4937-8a4a-6decc1358986" xlink:to="loc_fnf_HybridsMember_8c736848-c41d-4172-8916-393b294b4741" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_aa333f76-5ac9-4206-834b-2c9634c172d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_40b90ff2-f248-4937-8a4a-6decc1358986" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_aa333f76-5ac9-4206-834b-2c9634c172d8" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsDebtSecuritiesAvailableforsalePurchasedwithCreditDeteriorationDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsDebtSecuritiesAvailableforsalePurchasedwithCreditDeteriorationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsDebtSecuritiesAvailableforsalePurchasedwithCreditDeteriorationDetails" xlink:type="extended" id="ib3821653e77347e380dcc0b795ce6b17_InvestmentsDebtSecuritiesAvailableforsalePurchasedwithCreditDeteriorationDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails" xlink:type="extended" id="ifbab6aab918c4d638ac3e3395e52ec59_InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_36ea76c7-1d56-4985-bdb8-445feb2077fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_36ea76c7-1d56-4985-bdb8-445feb2077fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_3430ef89-252c-40c7-9aa8-111f2257766e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_3430ef89-252c-40c7-9aa8-111f2257766e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_8860ca10-db1a-47ee-8e52-386178b5c107" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_8860ca10-db1a-47ee-8e52-386178b5c107" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_07ec7097-69ea-45b4-9c54-820806d6b1c0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_07ec7097-69ea-45b4-9c54-820806d6b1c0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_07f33149-8e1e-40dd-9e2a-b7d30a374255" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_07f33149-8e1e-40dd-9e2a-b7d30a374255" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_4f56a4f5-8c9e-418d-9713-cf3a4deeeeb6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_4f56a4f5-8c9e-418d-9713-cf3a4deeeeb6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_21f6303a-9fc9-47b5-9025-2e35c71a4ade" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_21f6303a-9fc9-47b5-9025-2e35c71a4ade" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_678fe80b-e4fd-4555-821a-184dee2d6132" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_678fe80b-e4fd-4555-821a-184dee2d6132" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_ddde1355-8fce-4a79-8c4a-e84f382b2491" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_ddde1355-8fce-4a79-8c4a-e84f382b2491" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_02f35833-8ce9-4bc5-b54d-0f5aaa8e53f0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_f8cb7b86-a5da-415f-a91d-2a63e6ef5c4f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_02f35833-8ce9-4bc5-b54d-0f5aaa8e53f0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_8d9298f1-37d6-4a32-98c7-045189815819" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_02f35833-8ce9-4bc5-b54d-0f5aaa8e53f0" xlink:to="loc_us-gaap_FinancialInstrumentAxis_8d9298f1-37d6-4a32-98c7-045189815819" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8d9298f1-37d6-4a32-98c7-045189815819_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_8d9298f1-37d6-4a32-98c7-045189815819" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8d9298f1-37d6-4a32-98c7-045189815819_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_8d9298f1-37d6-4a32-98c7-045189815819" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_c58a43b9-892f-44ad-80df-89d9b673d8d3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_c58a43b9-892f-44ad-80df-89d9b673d8d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_61921652-3bc6-40aa-a647-eb556977b6d4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_61921652-3bc6-40aa-a647-eb556977b6d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_47da50ff-c541-4549-bfba-9d0e211210f1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_47da50ff-c541-4549-bfba-9d0e211210f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_93d0d8df-bc3c-4bad-8aac-47b42658002c" xlink:href="fnf-20201231.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_fnf_HybridsMember_93d0d8df-bc3c-4bad-8aac-47b42658002c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_f1ebc33e-ea94-4d78-aa2c-5e3f0742f8a6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_f1ebc33e-ea94-4d78-aa2c-5e3f0742f8a6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_9b4ecfa0-1c44-4893-9503-f22b811d8870" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_9b4ecfa0-1c44-4893-9503-f22b811d8870" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_cc404b53-7213-4be6-a06d-a7bc81892fac" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_cc404b53-7213-4be6-a06d-a7bc81892fac" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c2930a37-5086-4d52-95c7-02bca03b4dd8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_9d0ce6eb-6182-42de-b72f-cedfa01f7cba" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c2930a37-5086-4d52-95c7-02bca03b4dd8" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsScheduleofCommercialMortgageLoanGrossofValuationAllowanceByPropertyTypeandRegionDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsScheduleofCommercialMortgageLoanGrossofValuationAllowanceByPropertyTypeandRegionDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsScheduleofCommercialMortgageLoanGrossofValuationAllowanceByPropertyTypeandRegionDetails" xlink:type="extended" id="i9b158e878bca41aab04d636055ae8aa3_InvestmentsScheduleofCommercialMortgageLoanGrossofValuationAllowanceByPropertyTypeandRegionDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_cd9230d7-a6a1-4530-b6fd-69143116f064" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_c2c89576-5847-4f2c-8883-84da3d8a06be" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_cd9230d7-a6a1-4530-b6fd-69143116f064" xlink:to="loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_c2c89576-5847-4f2c-8883-84da3d8a06be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance_e7df52f7-5c06-4cdc-9fe8-55471b022bd4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_cd9230d7-a6a1-4530-b6fd-69143116f064" xlink:to="loc_us-gaap_LoansAndLeasesReceivableAllowance_e7df52f7-5c06-4cdc-9fe8-55471b022bd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount_09dc29d7-a7bb-4de9-8ac2-12f875c7358c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_cd9230d7-a6a1-4530-b6fd-69143116f064" xlink:to="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount_09dc29d7-a7bb-4de9-8ac2-12f875c7358c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageReceivablePercentageofTotal_0a26ad97-c4e0-4166-ae79-869f92b5f402" xlink:href="fnf-20201231.xsd#fnf_CommercialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_cd9230d7-a6a1-4530-b6fd-69143116f064" xlink:to="loc_fnf_CommercialMortgageReceivablePercentageofTotal_0a26ad97-c4e0-4166-ae79-869f92b5f402" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_90d88d76-b784-4a6d-a8a1-4668cf4698ad" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_cd9230d7-a6a1-4530-b6fd-69143116f064" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_90d88d76-b784-4a6d-a8a1-4668cf4698ad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_fdf54593-3126-4411-95f8-c447b3224825" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_90d88d76-b784-4a6d-a8a1-4668cf4698ad" xlink:to="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_fdf54593-3126-4411-95f8-c447b3224825" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_fdf54593-3126-4411-95f8-c447b3224825_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_fdf54593-3126-4411-95f8-c447b3224825" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_fdf54593-3126-4411-95f8-c447b3224825_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_fdf54593-3126-4411-95f8-c447b3224825" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_HotelMember_c142cb5c-30ff-4079-a30d-1ebfa84c5279" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_HotelMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:to="loc_srt_HotelMember_c142cb5c-30ff-4079-a30d-1ebfa84c5279" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IndustrialGeneralMember_46748bc5-ebfa-4ab8-a632-36248cefbe6c" xlink:href="fnf-20201231.xsd#fnf_IndustrialGeneralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:to="loc_fnf_IndustrialGeneralMember_46748bc5-ebfa-4ab8-a632-36248cefbe6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WarehouseMember_342cc15f-f495-4687-88b4-f2aa4e0de694" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_WarehouseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:to="loc_srt_WarehouseMember_342cc15f-f495-4687-88b4-f2aa4e0de694" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MultifamilyMember_3ad19911-dbe8-495c-ba9d-7b2086b4cf70" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MultifamilyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:to="loc_srt_MultifamilyMember_3ad19911-dbe8-495c-ba9d-7b2086b4cf70" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OfficeBuildingMember_04a8f820-87c7-4138-a114-d980e482460d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OfficeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:to="loc_srt_OfficeBuildingMember_04a8f820-87c7-4138-a114-d980e482460d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RetailSiteMember_fab60bee-0098-4e27-a31e-825227304231" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RetailSiteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:to="loc_srt_RetailSiteMember_fab60bee-0098-4e27-a31e-825227304231" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OtherPropertyMember_918e8f98-2251-4abf-9a0b-a7e0801b4849" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OtherPropertyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_c1f084a0-c2d2-4e85-b161-dba0efad2713" xlink:to="loc_srt_OtherPropertyMember_918e8f98-2251-4abf-9a0b-a7e0801b4849" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_55a08a87-c057-4c41-93da-7bfe26b0199d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_90d88d76-b784-4a6d-a8a1-4668cf4698ad" xlink:to="loc_srt_StatementGeographicalAxis_55a08a87-c057-4c41-93da-7bfe26b0199d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_55a08a87-c057-4c41-93da-7bfe26b0199d_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_55a08a87-c057-4c41-93da-7bfe26b0199d" xlink:to="loc_srt_SegmentGeographicalDomain_55a08a87-c057-4c41-93da-7bfe26b0199d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_55a08a87-c057-4c41-93da-7bfe26b0199d" xlink:to="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EastNorthCentralUSMember_5d0cbc46-de8d-4eb3-95da-60f3a75c87c2" xlink:href="fnf-20201231.xsd#fnf_EastNorthCentralUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_EastNorthCentralUSMember_5d0cbc46-de8d-4eb3-95da-60f3a75c87c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EastSouthCentralMember_491edef5-adcc-4736-be6e-cba1bc4a408f" xlink:href="fnf-20201231.xsd#fnf_EastSouthCentralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_EastSouthCentralMember_491edef5-adcc-4736-be6e-cba1bc4a408f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MiddleAtlanticUSMember_1b7a2964-e881-4992-831a-7fb11140e6a1" xlink:href="fnf-20201231.xsd#fnf_MiddleAtlanticUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_MiddleAtlanticUSMember_1b7a2964-e881-4992-831a-7fb11140e6a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MountainMember_c26ae6c4-2c1f-4727-aa4d-2e94e956b261" xlink:href="fnf-20201231.xsd#fnf_MountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_MountainMember_c26ae6c4-2c1f-4727-aa4d-2e94e956b261" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NewEnglandMember_df312b55-55bf-4682-88cd-c14b2a0f538b" xlink:href="fnf-20201231.xsd#fnf_NewEnglandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_NewEnglandMember_df312b55-55bf-4682-88cd-c14b2a0f538b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PacificUSMember_225db53a-1a08-4c29-aaf9-a2ae19f246eb" xlink:href="fnf-20201231.xsd#fnf_PacificUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_PacificUSMember_225db53a-1a08-4c29-aaf9-a2ae19f246eb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SouthAtlanticUSMember_9e2d83d5-887d-4a48-9946-dd385a692566" xlink:href="fnf-20201231.xsd#fnf_SouthAtlanticUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_SouthAtlanticUSMember_9e2d83d5-887d-4a48-9946-dd385a692566" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WestNorthCentralUSMember_9e52fd94-a38d-4609-9138-9569ae3390cf" xlink:href="fnf-20201231.xsd#fnf_WestNorthCentralUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_WestNorthCentralUSMember_9e52fd94-a38d-4609-9138-9569ae3390cf" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WestSouthCentralUSMember_d2ab3dc5-4b71-4249-963d-59bcb507ea74" xlink:href="fnf-20201231.xsd#fnf_WestSouthCentralUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d0934834-3aa3-42a2-9a0a-79a2ef17b0dc" xlink:to="loc_fnf_WestSouthCentralUSMember_d2ab3dc5-4b71-4249-963d-59bcb507ea74" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0294081e-cf27-4372-b223-b1c455f92d28" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_90d88d76-b784-4a6d-a8a1-4668cf4698ad" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0294081e-cf27-4372-b223-b1c455f92d28" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_0294081e-cf27-4372-b223-b1c455f92d28_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0294081e-cf27-4372-b223-b1c455f92d28" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_0294081e-cf27-4372-b223-b1c455f92d28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_2ea75b4a-b24c-477e-b2a8-a51f16a31e09" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0294081e-cf27-4372-b223-b1c455f92d28" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_2ea75b4a-b24c-477e-b2a8-a51f16a31e09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_ad08ba09-5df9-4090-b449-f4a7e90d33bb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_2ea75b4a-b24c-477e-b2a8-a51f16a31e09" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_ad08ba09-5df9-4090-b449-f4a7e90d33bb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails" xlink:type="extended" id="i06dbff9fc47746a890784ca1e2b2f46f_InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_62164b02-1750-4fb0-b46d-7bbb5f100029" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoansReceivableGrossMortgageLoans_6ac1d01a-5048-417f-8084-6a369cefefd1" xlink:href="fnf-20201231.xsd#fnf_LoansReceivableGrossMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_62164b02-1750-4fb0-b46d-7bbb5f100029" xlink:to="loc_fnf_LoansReceivableGrossMortgageLoans_6ac1d01a-5048-417f-8084-6a369cefefd1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageReceivablePercentageofTotal_07d131d2-1d28-4c25-a981-15822e05d2a2" xlink:href="fnf-20201231.xsd#fnf_CommercialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_62164b02-1750-4fb0-b46d-7bbb5f100029" xlink:to="loc_fnf_CommercialMortgageReceivablePercentageofTotal_07d131d2-1d28-4c25-a981-15822e05d2a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f55152f6-4cf2-4017-b428-2e54495fdeff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_62164b02-1750-4fb0-b46d-7bbb5f100029" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f55152f6-4cf2-4017-b428-2e54495fdeff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueAxis_14a80c5d-6762-46d0-b2b8-c9914df0e81a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoanToValueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f55152f6-4cf2-4017-b428-2e54495fdeff" xlink:to="loc_us-gaap_LoanToValueAxis_14a80c5d-6762-46d0-b2b8-c9914df0e81a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_14a80c5d-6762-46d0-b2b8-c9914df0e81a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoanToValueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LoanToValueAxis_14a80c5d-6762-46d0-b2b8-c9914df0e81a" xlink:to="loc_us-gaap_LoanToValueDomain_14a80c5d-6762-46d0-b2b8-c9914df0e81a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_a292917a-5897-44cc-8543-c9a80ea38295" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoanToValueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LoanToValueAxis_14a80c5d-6762-46d0-b2b8-c9914df0e81a" xlink:to="loc_us-gaap_LoanToValueDomain_a292917a-5897-44cc-8543-c9a80ea38295" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTVLessThan50PercentMember_2d41dcce-c5b7-4394-88ca-85f273af5cc5" xlink:href="fnf-20201231.xsd#fnf_LTVLessThan50PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_a292917a-5897-44cc-8543-c9a80ea38295" xlink:to="loc_fnf_LTVLessThan50PercentMember_2d41dcce-c5b7-4394-88ca-85f273af5cc5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV50to60PercentMember_b66b161c-77e5-4b62-9d37-217439b5c4c4" xlink:href="fnf-20201231.xsd#fnf_LTV50to60PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_a292917a-5897-44cc-8543-c9a80ea38295" xlink:to="loc_fnf_LTV50to60PercentMember_b66b161c-77e5-4b62-9d37-217439b5c4c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV60to75PercentMember_28e14780-db59-4818-ae33-3132dc1d735b" xlink:href="fnf-20201231.xsd#fnf_LTV60to75PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_a292917a-5897-44cc-8543-c9a80ea38295" xlink:to="loc_fnf_LTV60to75PercentMember_28e14780-db59-4818-ae33-3132dc1d735b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtCovenantTermsAxis_3a2b90d0-add8-4030-bc26-07d3add704cd" xlink:href="fnf-20201231.xsd#fnf_DebtCovenantTermsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f55152f6-4cf2-4017-b428-2e54495fdeff" xlink:to="loc_fnf_DebtCovenantTermsAxis_3a2b90d0-add8-4030-bc26-07d3add704cd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtCovenantTermsDomain_3a2b90d0-add8-4030-bc26-07d3add704cd_default" xlink:href="fnf-20201231.xsd#fnf_DebtCovenantTermsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_fnf_DebtCovenantTermsAxis_3a2b90d0-add8-4030-bc26-07d3add704cd" xlink:to="loc_fnf_DebtCovenantTermsDomain_3a2b90d0-add8-4030-bc26-07d3add704cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtCovenantTermsDomain_83a90025-e4f3-48b3-8077-73f23d3f8561" xlink:href="fnf-20201231.xsd#fnf_DebtCovenantTermsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_fnf_DebtCovenantTermsAxis_3a2b90d0-add8-4030-bc26-07d3add704cd" xlink:to="loc_fnf_DebtCovenantTermsDomain_83a90025-e4f3-48b3-8077-73f23d3f8561" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOnePointTwoFiveMember_fac8c796-6caf-48a2-b8fe-82bdf5a0ab12" xlink:href="fnf-20201231.xsd#fnf_GreaterThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtCovenantTermsDomain_83a90025-e4f3-48b3-8077-73f23d3f8561" xlink:to="loc_fnf_GreaterThanOnePointTwoFiveMember_fac8c796-6caf-48a2-b8fe-82bdf5a0ab12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_3fc89d6b-8fb9-4d3b-8b80-75971838df5c" xlink:href="fnf-20201231.xsd#fnf_GreaterThanOneButLessThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtCovenantTermsDomain_83a90025-e4f3-48b3-8077-73f23d3f8561" xlink:to="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_3fc89d6b-8fb9-4d3b-8b80-75971838df5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_ba875f39-cfd0-4f06-8368-0db9424a1d6f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f55152f6-4cf2-4017-b428-2e54495fdeff" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_ba875f39-cfd0-4f06-8368-0db9424a1d6f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_ba875f39-cfd0-4f06-8368-0db9424a1d6f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_ba875f39-cfd0-4f06-8368-0db9424a1d6f" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_ba875f39-cfd0-4f06-8368-0db9424a1d6f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_809c65a3-f4d6-44bb-94d0-6e1351a234a1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_ba875f39-cfd0-4f06-8368-0db9424a1d6f" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_809c65a3-f4d6-44bb-94d0-6e1351a234a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3c843558-9a38-4f66-8127-d3e98a02a294" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_809c65a3-f4d6-44bb-94d0-6e1351a234a1" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3c843558-9a38-4f66-8127-d3e98a02a294" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_a9b9e089-7f09-4484-b502-f57cb2b7d6db" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_809c65a3-f4d6-44bb-94d0-6e1351a234a1" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_a9b9e089-7f09-4484-b502-f57cb2b7d6db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_bbed01c4-4c40-4968-ae06-8d0e65f38528" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f55152f6-4cf2-4017-b428-2e54495fdeff" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_bbed01c4-4c40-4968-ae06-8d0e65f38528" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_bbed01c4-4c40-4968-ae06-8d0e65f38528_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_bbed01c4-4c40-4968-ae06-8d0e65f38528" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_bbed01c4-4c40-4968-ae06-8d0e65f38528_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_055f8b04-d434-48f6-a5c0-5e35ca554d55" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_bbed01c4-4c40-4968-ae06-8d0e65f38528" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_055f8b04-d434-48f6-a5c0-5e35ca554d55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_d4ca24ad-de31-4dfb-8dc7-b17a1d1c09a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_055f8b04-d434-48f6-a5c0-5e35ca554d55" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_d4ca24ad-de31-4dfb-8dc7-b17a1d1c09a2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsScheduleofResidentialMortgageLoanbyStateDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsScheduleofResidentialMortgageLoanbyStateDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsScheduleofResidentialMortgageLoanbyStateDetails" xlink:type="extended" id="i7319fb53109048e290bb4873ce12f811_InvestmentsScheduleofResidentialMortgageLoanbyStateDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_178a1f17-2edb-4718-9d36-ad3cbd9acc92" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoansReceivableGrossMortgageLoans_dccca536-61f2-4625-bd83-3929bbb8561d" xlink:href="fnf-20201231.xsd#fnf_LoansReceivableGrossMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_178a1f17-2edb-4718-9d36-ad3cbd9acc92" xlink:to="loc_fnf_LoansReceivableGrossMortgageLoans_dccca536-61f2-4625-bd83-3929bbb8561d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_c94e7b1e-d962-4dc6-b5e7-044db8e1a97e" xlink:href="fnf-20201231.xsd#fnf_ResidentialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_178a1f17-2edb-4718-9d36-ad3cbd9acc92" xlink:to="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_c94e7b1e-d962-4dc6-b5e7-044db8e1a97e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_6d857469-167a-4fdf-9795-e83e904e9593" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_178a1f17-2edb-4718-9d36-ad3cbd9acc92" xlink:to="loc_us-gaap_ConcentrationRiskTable_6d857469-167a-4fdf-9795-e83e904e9593" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_1eee60ea-ce41-4b1d-ae08-e589ce1b8640" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_6d857469-167a-4fdf-9795-e83e904e9593" xlink:to="loc_srt_StatementGeographicalAxis_1eee60ea-ce41-4b1d-ae08-e589ce1b8640" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_1eee60ea-ce41-4b1d-ae08-e589ce1b8640_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_1eee60ea-ce41-4b1d-ae08-e589ce1b8640" xlink:to="loc_srt_SegmentGeographicalDomain_1eee60ea-ce41-4b1d-ae08-e589ce1b8640_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_31f5301d-6c3a-4714-a4ec-1008ef49a4fa" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_1eee60ea-ce41-4b1d-ae08-e589ce1b8640" xlink:to="loc_srt_SegmentGeographicalDomain_31f5301d-6c3a-4714-a4ec-1008ef49a4fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_CA_b11726e6-c18e-4f89-8372-d6d8eb28b0c7" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_31f5301d-6c3a-4714-a4ec-1008ef49a4fa" xlink:to="loc_stpr_CA_b11726e6-c18e-4f89-8372-d6d8eb28b0c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_FL_29c078c9-c450-4c57-9cb4-acaf8f96b555" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_FL"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_31f5301d-6c3a-4714-a4ec-1008ef49a4fa" xlink:to="loc_stpr_FL_29c078c9-c450-4c57-9cb4-acaf8f96b555" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_NJ_0a016615-4280-4c2b-9f87-59b2be14c770" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NJ"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_31f5301d-6c3a-4714-a4ec-1008ef49a4fa" xlink:to="loc_stpr_NJ_0a016615-4280-4c2b-9f87-59b2be14c770" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AllOtherStatesMember_71639c30-cb85-4b61-861e-d574dbb5cdef" xlink:href="fnf-20201231.xsd#fnf_AllOtherStatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_31f5301d-6c3a-4714-a4ec-1008ef49a4fa" xlink:to="loc_fnf_AllOtherStatesMember_71639c30-cb85-4b61-861e-d574dbb5cdef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_1cfa2712-077e-4c3c-b40d-873d6555439c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_6d857469-167a-4fdf-9795-e83e904e9593" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_1cfa2712-077e-4c3c-b40d-873d6555439c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_1cfa2712-077e-4c3c-b40d-873d6555439c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_1cfa2712-077e-4c3c-b40d-873d6555439c" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_1cfa2712-077e-4c3c-b40d-873d6555439c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_16b5ae22-71be-49e6-8044-fea634df08b6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_1cfa2712-077e-4c3c-b40d-873d6555439c" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_16b5ae22-71be-49e6-8044-fea634df08b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TotalMortgageLoansMember_3c9e966f-fdd3-4a68-b281-6791b2e691c2" xlink:href="fnf-20201231.xsd#fnf_TotalMortgageLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_16b5ae22-71be-49e6-8044-fea634df08b6" xlink:to="loc_fnf_TotalMortgageLoansMember_3c9e966f-fdd3-4a68-b281-6791b2e691c2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsCreditQualityofRMLsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsCreditQualityofRMLsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsCreditQualityofRMLsDetails" xlink:type="extended" id="i11f81ff232d94814bc53cf56a044eb18_InvestmentsCreditQualityofRMLsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_f8f5571c-8175-4f0a-a61a-33163b1c7954" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoansReceivableGrossMortgageLoans_a97965e7-5cca-41fb-9080-e620836156fe" xlink:href="fnf-20201231.xsd#fnf_LoansReceivableGrossMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_f8f5571c-8175-4f0a-a61a-33163b1c7954" xlink:to="loc_fnf_LoansReceivableGrossMortgageLoans_a97965e7-5cca-41fb-9080-e620836156fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance_411ba172-9cc4-4509-8d20-3445f30d15cf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_f8f5571c-8175-4f0a-a61a-33163b1c7954" xlink:to="loc_us-gaap_LoansAndLeasesReceivableAllowance_411ba172-9cc4-4509-8d20-3445f30d15cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_1db2535b-42c5-49f0-a27b-20e3b3286958" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_f8f5571c-8175-4f0a-a61a-33163b1c7954" xlink:to="loc_us-gaap_NotesReceivableNet_1db2535b-42c5-49f0-a27b-20e3b3286958" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_97541a33-0c98-4124-b7e6-aea79426a635" xlink:href="fnf-20201231.xsd#fnf_ResidentialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_f8f5571c-8175-4f0a-a61a-33163b1c7954" xlink:to="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_97541a33-0c98-4124-b7e6-aea79426a635" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoansAndLeasesReceivableAllowanceMortgageLoansPercentageOfTotal_094a0177-198d-4c75-9d51-c694b980b851" xlink:href="fnf-20201231.xsd#fnf_LoansAndLeasesReceivableAllowanceMortgageLoansPercentageOfTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_f8f5571c-8175-4f0a-a61a-33163b1c7954" xlink:to="loc_fnf_LoansAndLeasesReceivableAllowanceMortgageLoansPercentageOfTotal_094a0177-198d-4c75-9d51-c694b980b851" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_dd5fee1d-fe43-4b27-b50a-d2c47c78200f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_f8f5571c-8175-4f0a-a61a-33163b1c7954" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_dd5fee1d-fe43-4b27-b50a-d2c47c78200f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_c3c8a229-c60c-4f0c-a79a-cc0b2d28c341" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_dd5fee1d-fe43-4b27-b50a-d2c47c78200f" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_c3c8a229-c60c-4f0c-a79a-cc0b2d28c341" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_c3c8a229-c60c-4f0c-a79a-cc0b2d28c341_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_c3c8a229-c60c-4f0c-a79a-cc0b2d28c341" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_c3c8a229-c60c-4f0c-a79a-cc0b2d28c341_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_f3e22f12-4e9f-4623-bf06-91984a0e9eeb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_c3c8a229-c60c-4f0c-a79a-cc0b2d28c341" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_f3e22f12-4e9f-4623-bf06-91984a0e9eeb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_da3b2919-d6eb-430a-9203-12513510a5c0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_f3e22f12-4e9f-4623-bf06-91984a0e9eeb" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_da3b2919-d6eb-430a-9203-12513510a5c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_ce4a762d-0a75-421e-9cf0-bb6e3745004a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_dd5fee1d-fe43-4b27-b50a-d2c47c78200f" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_ce4a762d-0a75-421e-9cf0-bb6e3745004a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_ce4a762d-0a75-421e-9cf0-bb6e3745004a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_ce4a762d-0a75-421e-9cf0-bb6e3745004a" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_ce4a762d-0a75-421e-9cf0-bb6e3745004a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_e37dcfbc-9f2a-40f3-8c57-254e05778a6b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_ce4a762d-0a75-421e-9cf0-bb6e3745004a" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_e37dcfbc-9f2a-40f3-8c57-254e05778a6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_6a44e9be-d1ed-45b4-8c91-cfc694a1582f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_e37dcfbc-9f2a-40f3-8c57-254e05778a6b" xlink:to="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_6a44e9be-d1ed-45b4-8c91-cfc694a1582f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_9a3854f6-cdf7-41a6-b34d-c03c46001ed2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentPerformanceStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_dd5fee1d-fe43-4b27-b50a-d2c47c78200f" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_9a3854f6-cdf7-41a6-b34d-c03c46001ed2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_9a3854f6-cdf7-41a6-b34d-c03c46001ed2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentPerformanceStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_9a3854f6-cdf7-41a6-b34d-c03c46001ed2" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_9a3854f6-cdf7-41a6-b34d-c03c46001ed2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_7202ae63-f283-46dd-a4b8-1ced2a004711" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentPerformanceStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_9a3854f6-cdf7-41a6-b34d-c03c46001ed2" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_7202ae63-f283-46dd-a4b8-1ced2a004711" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformingFinancingReceivableMember_bb628dcb-8179-44e7-a201-3399d5f7ca1b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformingFinancingReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_7202ae63-f283-46dd-a4b8-1ced2a004711" xlink:to="loc_us-gaap_PerformingFinancingReceivableMember_bb628dcb-8179-44e7-a201-3399d5f7ca1b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonperformingFinancingReceivableMember_ee090b15-865f-4879-98e4-58ad2719430e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonperformingFinancingReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_7202ae63-f283-46dd-a4b8-1ced2a004711" xlink:to="loc_us-gaap_NonperformingFinancingReceivableMember_ee090b15-865f-4879-98e4-58ad2719430e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsLoansSegregatedByRiskRatingandNonaccrualLoansbyAmortizedCostDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsLoansSegregatedByRiskRatingandNonaccrualLoansbyAmortizedCostDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsLoansSegregatedByRiskRatingandNonaccrualLoansbyAmortizedCostDetails" xlink:type="extended" id="i31374fc0c34545e592e2fb26a9c61d73_InvestmentsLoansSegregatedByRiskRatingandNonaccrualLoansbyAmortizedCostDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_cf2a91dc-c492-4771-b16d-2533356f7c63" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_cf2a91dc-c492-4771-b16d-2533356f7c63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_c0f350cc-8e43-48b8-b369-9a1a3b76f78a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_c0f350cc-8e43-48b8-b369-9a1a3b76f78a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_2b115fa1-f74b-42aa-95ec-3a5f6cc35d41" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_2b115fa1-f74b-42aa-95ec-3a5f6cc35d41" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_94475cdd-2438-46de-8735-d0eacff02971" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_94475cdd-2438-46de-8735-d0eacff02971" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_3f0a9aed-d0a2-4828-8bd2-8a79f4262e81" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_3f0a9aed-d0a2-4828-8bd2-8a79f4262e81" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_249afee9-9b0c-493d-ad0e-65e517a63272" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_249afee9-9b0c-493d-ad0e-65e517a63272" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_d7a608d4-0789-42ac-ab4b-5a155115989e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_NotesReceivableGross_d7a608d4-0789-42ac-ab4b-5a155115989e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoansAtAmortizedCostNonaccrual_ce562765-df39-4b7e-862c-a151b93e3f35" xlink:href="fnf-20201231.xsd#fnf_LoansAtAmortizedCostNonaccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_fnf_LoansAtAmortizedCostNonaccrual_ce562765-df39-4b7e-862c-a151b93e3f35" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_0d94c49a-0191-44ee-914f-4159271be252" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_fb813f30-885f-481c-a89c-d9718b68ef33" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_0d94c49a-0191-44ee-914f-4159271be252" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0c6402b1-2be5-446c-8dce-2313d30172ee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_0d94c49a-0191-44ee-914f-4159271be252" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0c6402b1-2be5-446c-8dce-2313d30172ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_0c6402b1-2be5-446c-8dce-2313d30172ee_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0c6402b1-2be5-446c-8dce-2313d30172ee" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_0c6402b1-2be5-446c-8dce-2313d30172ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_1d7e0cdf-4edf-4cbf-aa90-0d9098e2dbdb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0c6402b1-2be5-446c-8dce-2313d30172ee" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_1d7e0cdf-4edf-4cbf-aa90-0d9098e2dbdb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_6efe4d0e-f01b-4f49-836b-83e8843a1c98" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_1d7e0cdf-4edf-4cbf-aa90-0d9098e2dbdb" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_6efe4d0e-f01b-4f49-836b-83e8843a1c98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_6c29e82a-b155-4808-a9bf-eec3796559c1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_1d7e0cdf-4edf-4cbf-aa90-0d9098e2dbdb" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_6c29e82a-b155-4808-a9bf-eec3796559c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_7725aba0-de4f-42e8-9375-5dbd6d6a2a8b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_0d94c49a-0191-44ee-914f-4159271be252" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_7725aba0-de4f-42e8-9375-5dbd6d6a2a8b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_7725aba0-de4f-42e8-9375-5dbd6d6a2a8b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_7725aba0-de4f-42e8-9375-5dbd6d6a2a8b" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_7725aba0-de4f-42e8-9375-5dbd6d6a2a8b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_5e0a71a8-20ad-430f-a0b0-797cc10f1d67" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_7725aba0-de4f-42e8-9375-5dbd6d6a2a8b" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_5e0a71a8-20ad-430f-a0b0-797cc10f1d67" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables1To29DaysPastDueMember_a0ef7aab-1a31-4caa-b605-8d031326aadb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivables1To29DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_5e0a71a8-20ad-430f-a0b0-797cc10f1d67" xlink:to="loc_us-gaap_FinancingReceivables1To29DaysPastDueMember_a0ef7aab-1a31-4caa-b605-8d031326aadb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FinancialAsset30To89DaysPastDueMember_2512fd0f-e914-49dc-b5ab-c2d8a430cf2f" xlink:href="fnf-20201231.xsd#fnf_FinancialAsset30To89DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_5e0a71a8-20ad-430f-a0b0-797cc10f1d67" xlink:to="loc_fnf_FinancialAsset30To89DaysPastDueMember_2512fd0f-e914-49dc-b5ab-c2d8a430cf2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_7c1b60a2-a492-48c1-be14-275dfa17d98d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_5e0a71a8-20ad-430f-a0b0-797cc10f1d67" xlink:to="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_7c1b60a2-a492-48c1-be14-275dfa17d98d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueAxis_3032ba0a-7a2b-41ec-947c-b8cebcd31457" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoanToValueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_0d94c49a-0191-44ee-914f-4159271be252" xlink:to="loc_us-gaap_LoanToValueAxis_3032ba0a-7a2b-41ec-947c-b8cebcd31457" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_3032ba0a-7a2b-41ec-947c-b8cebcd31457_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoanToValueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LoanToValueAxis_3032ba0a-7a2b-41ec-947c-b8cebcd31457" xlink:to="loc_us-gaap_LoanToValueDomain_3032ba0a-7a2b-41ec-947c-b8cebcd31457_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_ccdeb516-c4a1-4294-a339-6050bde6bc46" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoanToValueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LoanToValueAxis_3032ba0a-7a2b-41ec-947c-b8cebcd31457" xlink:to="loc_us-gaap_LoanToValueDomain_ccdeb516-c4a1-4294-a339-6050bde6bc46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTVLessThan50PercentMember_9b8442d6-be6e-422d-8ea3-506643d58e6a" xlink:href="fnf-20201231.xsd#fnf_LTVLessThan50PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_ccdeb516-c4a1-4294-a339-6050bde6bc46" xlink:to="loc_fnf_LTVLessThan50PercentMember_9b8442d6-be6e-422d-8ea3-506643d58e6a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV50to60PercentMember_941d2957-97ef-4f31-9332-11384864e98e" xlink:href="fnf-20201231.xsd#fnf_LTV50to60PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_ccdeb516-c4a1-4294-a339-6050bde6bc46" xlink:to="loc_fnf_LTV50to60PercentMember_941d2957-97ef-4f31-9332-11384864e98e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV60to75PercentMember_6bd5e18f-bf6e-45f5-8d3b-2d5d82e970b7" xlink:href="fnf-20201231.xsd#fnf_LTV60to75PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_ccdeb516-c4a1-4294-a339-6050bde6bc46" xlink:to="loc_fnf_LTV60to75PercentMember_6bd5e18f-bf6e-45f5-8d3b-2d5d82e970b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioAxis_0c90fc42-54c8-4f23-90c7-4603fca38be7" xlink:href="fnf-20201231.xsd#fnf_DebtServiceCoverageRatioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_0d94c49a-0191-44ee-914f-4159271be252" xlink:to="loc_fnf_DebtServiceCoverageRatioAxis_0c90fc42-54c8-4f23-90c7-4603fca38be7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioDomain_0c90fc42-54c8-4f23-90c7-4603fca38be7_default" xlink:href="fnf-20201231.xsd#fnf_DebtServiceCoverageRatioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_fnf_DebtServiceCoverageRatioAxis_0c90fc42-54c8-4f23-90c7-4603fca38be7" xlink:to="loc_fnf_DebtServiceCoverageRatioDomain_0c90fc42-54c8-4f23-90c7-4603fca38be7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioDomain_e0cea4bf-de92-473c-92c8-5fd7c2bf2040" xlink:href="fnf-20201231.xsd#fnf_DebtServiceCoverageRatioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_fnf_DebtServiceCoverageRatioAxis_0c90fc42-54c8-4f23-90c7-4603fca38be7" xlink:to="loc_fnf_DebtServiceCoverageRatioDomain_e0cea4bf-de92-473c-92c8-5fd7c2bf2040" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOnePointTwoFiveMember_f0face2a-3558-4d36-b53d-0b7c520e1a94" xlink:href="fnf-20201231.xsd#fnf_GreaterThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtServiceCoverageRatioDomain_e0cea4bf-de92-473c-92c8-5fd7c2bf2040" xlink:to="loc_fnf_GreaterThanOnePointTwoFiveMember_f0face2a-3558-4d36-b53d-0b7c520e1a94" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_ec2eaa22-7673-4367-a4a9-d0cfd0c8a844" xlink:href="fnf-20201231.xsd#fnf_GreaterThanOneButLessThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtServiceCoverageRatioDomain_e0cea4bf-de92-473c-92c8-5fd7c2bf2040" xlink:to="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_ec2eaa22-7673-4367-a4a9-d0cfd0c8a844" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LessThanOnePointZeroZeroMember_8239bf14-67ef-4f0e-8fd1-6024c1f2f80b" xlink:href="fnf-20201231.xsd#fnf_LessThanOnePointZeroZeroMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtServiceCoverageRatioDomain_e0cea4bf-de92-473c-92c8-5fd7c2bf2040" xlink:to="loc_fnf_LessThanOnePointZeroZeroMember_8239bf14-67ef-4f0e-8fd1-6024c1f2f80b" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossesonPCDLoansandAccruedInterestIncomeonMortgageLoansDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsAllowanceforCreditLossesonPCDLoansandAccruedInterestIncomeonMortgageLoansDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossesonPCDLoansandAccruedInterestIncomeonMortgageLoansDetails" xlink:type="extended" id="id14007c50c2440f6994dcb989e1f1862_InvestmentsAllowanceforCreditLossesonPCDLoansandAccruedInterestIncomeonMortgageLoansDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_9f2bb0f3-ea61-44c5-8a7f-d025fdeb1786" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_cfe49057-8676-4965-b46b-19995962c623" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_9f2bb0f3-ea61-44c5-8a7f-d025fdeb1786" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_cfe49057-8676-4965-b46b-19995962c623" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_2130a00f-36ea-43b9-b2cd-f49415535eaf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProvisionForLoanLossesExpensed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_cfe49057-8676-4965-b46b-19995962c623" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_2130a00f-36ea-43b9-b2cd-f49415535eaf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForOtherCreditLosses_9089e6b9-7a3e-421d-b80f-1a3f1f1867e9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProvisionForOtherCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_cfe49057-8676-4965-b46b-19995962c623" xlink:to="loc_us-gaap_ProvisionForOtherCreditLosses_9089e6b9-7a3e-421d-b80f-1a3f1f1867e9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_6a6a8605-6d90-4e87-83d3-71aef106fba9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_cfe49057-8676-4965-b46b-19995962c623" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_6a6a8605-6d90-4e87-83d3-71aef106fba9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract_0e978b26-3b87-4dbd-b74e-23f3bacf2f75" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_9f2bb0f3-ea61-44c5-8a7f-d025fdeb1786" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract_0e978b26-3b87-4dbd-b74e-23f3bacf2f75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableNonaccrualInterestIncome_bcd6b383-9e56-48b3-b1ae-e29da933fe0a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableNonaccrualInterestIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract_0e978b26-3b87-4dbd-b74e-23f3bacf2f75" xlink:to="loc_us-gaap_FinancingReceivableNonaccrualInterestIncome_bcd6b383-9e56-48b3-b1ae-e29da933fe0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_42eb26b6-ee58-4810-bec8-af461921b55b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract_0e978b26-3b87-4dbd-b74e-23f3bacf2f75" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_42eb26b6-ee58-4810-bec8-af461921b55b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_60b88f43-ced6-4372-beae-333d6816f85a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_9f2bb0f3-ea61-44c5-8a7f-d025fdeb1786" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_60b88f43-ced6-4372-beae-333d6816f85a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_eeae3031-1db9-4bc1-bb94-2852181f31da" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_60b88f43-ced6-4372-beae-333d6816f85a" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_eeae3031-1db9-4bc1-bb94-2852181f31da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_eeae3031-1db9-4bc1-bb94-2852181f31da_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_eeae3031-1db9-4bc1-bb94-2852181f31da" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_eeae3031-1db9-4bc1-bb94-2852181f31da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_c67d295a-59e0-4981-bfe2-84dbe62161b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_eeae3031-1db9-4bc1-bb94-2852181f31da" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_c67d295a-59e0-4981-bfe2-84dbe62161b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_3bdfbf73-3eca-45e9-ba4d-1b3e34dde673" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_c67d295a-59e0-4981-bfe2-84dbe62161b4" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_3bdfbf73-3eca-45e9-ba4d-1b3e34dde673" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_c585c3d8-974c-4b32-883d-5182931b4c2b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_c67d295a-59e0-4981-bfe2-84dbe62161b4" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_c585c3d8-974c-4b32-883d-5182931b4c2b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsMajorSourcesofInterestandInvestmentIncomeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsMajorSourcesofInterestandInvestmentIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsMajorSourcesofInterestandInvestmentIncomeDetails" xlink:type="extended" id="i9e48428f0ad148aba41dc8c1471aa3f8_InvestmentsMajorSourcesofInterestandInvestmentIncomeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_a5735658-dedd-4f30-8ab4-02e575bb1b92" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossInvestmentIncomeOperating_448d699b-90ec-4cbd-9eb9-28866edca904" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GrossInvestmentIncomeOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_a5735658-dedd-4f30-8ab4-02e575bb1b92" xlink:to="loc_us-gaap_GrossInvestmentIncomeOperating_448d699b-90ec-4cbd-9eb9-28866edca904" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInvestmentExpense_d1dbc721-fb86-4fbc-9fe6-43a30b868790" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentIncomeInvestmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_a5735658-dedd-4f30-8ab4-02e575bb1b92" xlink:to="loc_us-gaap_InvestmentIncomeInvestmentExpense_d1dbc721-fb86-4fbc-9fe6-43a30b868790" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentIncome_ad14cd6e-ad54-4989-9b4f-7fbe7c6f7f93" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_a5735658-dedd-4f30-8ab4-02e575bb1b92" xlink:to="loc_us-gaap_NetInvestmentIncome_ad14cd6e-ad54-4989-9b4f-7fbe7c6f7f93" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_18b73744-560d-452d-b104-1653145b9a50" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_a5735658-dedd-4f30-8ab4-02e575bb1b92" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_18b73744-560d-452d-b104-1653145b9a50" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_bbcf1527-bf91-4f0a-83ef-06dcbcab3e99" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_18b73744-560d-452d-b104-1653145b9a50" xlink:to="loc_us-gaap_InvestmentTypeAxis_bbcf1527-bf91-4f0a-83ef-06dcbcab3e99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_bbcf1527-bf91-4f0a-83ef-06dcbcab3e99_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_bbcf1527-bf91-4f0a-83ef-06dcbcab3e99" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_bbcf1527-bf91-4f0a-83ef-06dcbcab3e99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_bbcf1527-bf91-4f0a-83ef-06dcbcab3e99" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_d61c5d0d-8b83-4771-90b5-344f07970cac" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_us-gaap_DebtSecuritiesMember_d61c5d0d-8b83-4771-90b5-344f07970cac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_33a3ae0f-f89e-42c0-acf7-66a60584a248" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_us-gaap_EquitySecuritiesMember_33a3ae0f-f89e-42c0-acf7-66a60584a248" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_c4b82f38-a090-4fc2-a646-c61885a1aeb3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_us-gaap_PreferredStockMember_c4b82f38-a090-4fc2-a646-c61885a1aeb3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageLoanMember_a20eaf4d-8137-4d82-8387-c556ef1ef9d6" xlink:href="fnf-20201231.xsd#fnf_CommercialMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_fnf_CommercialMortgageLoanMember_a20eaf4d-8137-4d82-8387-c556ef1ef9d6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestedCashAndShortTermInvestmentsMember_6512fe40-de9b-42cf-93a6-1babffc7fc8f" xlink:href="fnf-20201231.xsd#fnf_InvestedCashAndShortTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_fnf_InvestedCashAndShortTermInvestmentsMember_6512fe40-de9b-42cf-93a6-1babffc7fc8f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LimitedPartnershipMember_6b9f90e9-954a-41a0-a8fe-d23e60fb7036" xlink:href="fnf-20201231.xsd#fnf_LimitedPartnershipMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_fnf_LimitedPartnershipMember_6b9f90e9-954a-41a0-a8fe-d23e60fb7036" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TaxDeferredPropertyExchangeMember_159dead2-d52e-47bf-8e9f-375eaa0b2a31" xlink:href="fnf-20201231.xsd#fnf_TaxDeferredPropertyExchangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_fnf_TaxDeferredPropertyExchangeMember_159dead2-d52e-47bf-8e9f-375eaa0b2a31" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestmentsMember_74d55b65-127a-4b83-a648-957759eebab4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_4570e256-e459-4d92-beba-b0afd704cb95" xlink:to="loc_us-gaap_OtherInvestmentsMember_74d55b65-127a-4b83-a648-957759eebab4" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsInvestmentGainsLossesNetDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsInvestmentGainsLossesNetDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsInvestmentGainsLossesNetDetails" xlink:type="extended" id="i1ac5bf493b654f2f8920ea5a0c3547c5_InvestmentsInvestmentGainsLossesNetDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesRealizedGainLoss_77847a6a-3900-46d7-8eb5-bca2a3af11b3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesRealizedGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_DebtSecuritiesRealizedGainLoss_77847a6a-3900-46d7-8eb5-bca2a3af11b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiRealizedGainLoss_326e39a1-c557-49ff-ba33-b07d16bd3f2c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNiRealizedGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_EquitySecuritiesFvNiRealizedGainLoss_326e39a1-c557-49ff-ba33-b07d16bd3f2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfOtherInvestments_6b1b96d1-0044-4da3-96af-a23057c3c3b3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOtherInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_GainLossOnSaleOfOtherInvestments_6b1b96d1-0044-4da3-96af-a23057c3c3b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_bac9ead8-9a27-455a-97f9-e6ee98c5f015" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_bac9ead8-9a27-455a-97f9-e6ee98c5f015" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfDerivatives_36f2241b-f9fb-43cd-9dbf-ddbe0834f3a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_GainLossOnSaleOfDerivatives_36f2241b-f9fb-43cd-9dbf-ddbe0834f3a9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_8e1ea6df-d4a0-4fd9-90e9-e4ceecf96ac7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_8e1ea6df-d4a0-4fd9-90e9-e4ceecf96ac7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_03228c92-d2eb-4e33-9635-c6ce39344458" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_03228c92-d2eb-4e33-9635-c6ce39344458" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet_903678a0-8d59-46e5-a74c-ae0fe85468ce" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet_903678a0-8d59-46e5-a74c-ae0fe85468ce" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ChangeInFairValueDerivativesIncludingOtherDerivatives_d1d486a4-d4cd-44f6-8652-972c420502d7" xlink:href="fnf-20201231.xsd#fnf_ChangeInFairValueDerivativesIncludingOtherDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_fnf_ChangeInFairValueDerivativesIncludingOtherDerivatives_d1d486a4-d4cd-44f6-8652-972c420502d7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_e1580317-27c6-42c9-b319-88df17666e39" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_GainLossOnInvestments_e1580317-27c6-42c9-b319-88df17666e39" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EquitySecuritiesFVNIValuationGainLoss_9c416d73-c764-4ee2-8d24-2a57221608ad" xlink:href="fnf-20201231.xsd#fnf_EquitySecuritiesFVNIValuationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_fnf_EquitySecuritiesFVNIValuationGainLoss_9c416d73-c764-4ee2-8d24-2a57221608ad" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_730edaef-1530-49db-a587-fae699558013" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_c9705d8a-dbd0-4f58-b3c9-935efe309d2e" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_730edaef-1530-49db-a587-fae699558013" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_ea3256fa-028b-401e-bf0d-37c10c60bf74" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfInvestmentsTable_730edaef-1530-49db-a587-fae699558013" xlink:to="loc_us-gaap_InvestmentTypeAxis_ea3256fa-028b-401e-bf0d-37c10c60bf74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_ea3256fa-028b-401e-bf0d-37c10c60bf74_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_ea3256fa-028b-401e-bf0d-37c10c60bf74" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_ea3256fa-028b-401e-bf0d-37c10c60bf74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_9f6fa55e-a198-4f84-b58e-954982d612a0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_ea3256fa-028b-401e-bf0d-37c10c60bf74" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_9f6fa55e-a198-4f84-b58e-954982d612a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_15fddcbe-a800-48e0-bb6a-3c39cf7312e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_9f6fa55e-a198-4f84-b58e-954982d612a0" xlink:to="loc_us-gaap_EquitySecuritiesMember_15fddcbe-a800-48e0-bb6a-3c39cf7312e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_93b8e93d-a9d4-4823-a531-4376a45165be" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_9f6fa55e-a198-4f84-b58e-954982d612a0" xlink:to="loc_us-gaap_PreferredStockMember_93b8e93d-a9d4-4823-a531-4376a45165be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EquitySecuritiesForwardPurchaseAgreementsMember_f1a84686-29d7-4089-ade5-e6c3cee3bb48" xlink:href="fnf-20201231.xsd#fnf_EquitySecuritiesForwardPurchaseAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_9f6fa55e-a198-4f84-b58e-954982d612a0" xlink:to="loc_fnf_EquitySecuritiesForwardPurchaseAgreementsMember_f1a84686-29d7-4089-ade5-e6c3cee3bb48" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsImpactofAdoptionofASUDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsImpactofAdoptionofASUDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsImpactofAdoptionofASUDetails" xlink:type="extended" id="i3d85c44c4f024fc7b6a281628f599835_InvestmentsImpactofAdoptionofASUDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_cccece6a-e1d9-4496-9d82-57ae7b4d068a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_8ccb017f-0c39-4d49-b2b2-ea7a8ad8ab5f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_cccece6a-e1d9-4496-9d82-57ae7b4d068a" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_8ccb017f-0c39-4d49-b2b2-ea7a8ad8ab5f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_44d00ab4-b2aa-4814-adec-2e6d5d5e2fe3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_cccece6a-e1d9-4496-9d82-57ae7b4d068a" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_44d00ab4-b2aa-4814-adec-2e6d5d5e2fe3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_853dc5ab-8e0e-422a-ab57-2f8340a33928" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_44d00ab4-b2aa-4814-adec-2e6d5d5e2fe3" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_853dc5ab-8e0e-422a-ab57-2f8340a33928" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_853dc5ab-8e0e-422a-ab57-2f8340a33928_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_853dc5ab-8e0e-422a-ab57-2f8340a33928" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_853dc5ab-8e0e-422a-ab57-2f8340a33928_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_718409ab-69ec-48a0-976a-c0c390c3345b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_853dc5ab-8e0e-422a-ab57-2f8340a33928" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_718409ab-69ec-48a0-976a-c0c390c3345b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_4ec8bef3-5841-4ec9-96a9-0042b33771b6" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_718409ab-69ec-48a0-976a-c0c390c3345b" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_4ec8bef3-5841-4ec9-96a9-0042b33771b6" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails" xlink:type="extended" id="i3eed33f4069749e8aabcd266fade3c99_InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a0118ac0-cce1-41f2-bc03-64e11b0288f6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_5e45b157-fad7-4895-99b6-1c02639b1709" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a0118ac0-cce1-41f2-bc03-64e11b0288f6" xlink:to="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_5e45b157-fad7-4895-99b6-1c02639b1709" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainOnSaleOfInvestments_0a44c7e5-ae2d-49f5-89d3-2790406e144e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainOnSaleOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a0118ac0-cce1-41f2-bc03-64e11b0288f6" xlink:to="loc_us-gaap_GainOnSaleOfInvestments_0a44c7e5-ae2d-49f5-89d3-2790406e144e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossOnSaleOfInvestments_20dc07db-9a8d-41dd-a5f6-bfcafd305a26" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossOnSaleOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a0118ac0-cce1-41f2-bc03-64e11b0288f6" xlink:to="loc_us-gaap_LossOnSaleOfInvestments_20dc07db-9a8d-41dd-a5f6-bfcafd305a26" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_ecde45e0-6df2-4f9c-ac78-6df3c6225b6c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a0118ac0-cce1-41f2-bc03-64e11b0288f6" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_ecde45e0-6df2-4f9c-ac78-6df3c6225b6c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_4dbce632-775e-4444-94a3-a67e4cd7f15e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_ecde45e0-6df2-4f9c-ac78-6df3c6225b6c" xlink:to="loc_us-gaap_InvestmentTypeAxis_4dbce632-775e-4444-94a3-a67e4cd7f15e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_4dbce632-775e-4444-94a3-a67e4cd7f15e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_4dbce632-775e-4444-94a3-a67e4cd7f15e" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_4dbce632-775e-4444-94a3-a67e4cd7f15e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_f3ef4c37-4e4c-42e6-8b05-e2fe08ebefd9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_4dbce632-775e-4444-94a3-a67e4cd7f15e" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_f3ef4c37-4e4c-42e6-8b05-e2fe08ebefd9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedMaturitiesMember_f61c5e11-fea1-450a-95e9-25aa31fc4c33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FixedMaturitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_f3ef4c37-4e4c-42e6-8b05-e2fe08ebefd9" xlink:to="loc_us-gaap_FixedMaturitiesMember_f61c5e11-fea1-450a-95e9-25aa31fc4c33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_af845aba-ad29-435d-ab15-67070f2d5e65" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InformationByCategoryOfDebtSecurityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_ecde45e0-6df2-4f9c-ac78-6df3c6225b6c" xlink:to="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_af845aba-ad29-435d-ab15-67070f2d5e65" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_af845aba-ad29-435d-ab15-67070f2d5e65_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_af845aba-ad29-435d-ab15-67070f2d5e65" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_af845aba-ad29-435d-ab15-67070f2d5e65_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_dbfde5b3-ea0c-42b1-a755-0fc195d48946" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_af845aba-ad29-435d-ab15-67070f2d5e65" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_dbfde5b3-ea0c-42b1-a755-0fc195d48946" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesMember_e0bca9df-c3a1-4f6d-ac15-d2565aa71b40" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableforsaleSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_dbfde5b3-ea0c-42b1-a755-0fc195d48946" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesMember_e0bca9df-c3a1-4f6d-ac15-d2565aa71b40" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstruments" xlink:type="simple" xlink:href="fnf-20201231.xsd#DerivativeFinancialInstruments"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstruments" xlink:type="extended" id="iacb515e0b95a46c3ae5c759f9372b498_DerivativeFinancialInstruments"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#DerivativeFinancialInstrumentsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsTables" xlink:type="extended" id="i9405335a2b8b47c8beede2cf94270a58_DerivativeFinancialInstrumentsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsCarryingAmountsofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#DerivativeFinancialInstrumentsCarryingAmountsofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsCarryingAmountsofDerivativeInstrumentsDetails" xlink:type="extended" id="i1e17059a78dd4de3adf89f90f38724e3_DerivativeFinancialInstrumentsCarryingAmountsofDerivativeInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_b1e459b7-0197-428b-8aca-cacb65384918" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_92d3550f-5f47-45d3-ab07-e5d208bfbdb6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_b1e459b7-0197-428b-8aca-cacb65384918" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_92d3550f-5f47-45d3-ab07-e5d208bfbdb6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_fd673562-a58e-4123-8c55-445a509bac03" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_b1e459b7-0197-428b-8aca-cacb65384918" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_fd673562-a58e-4123-8c55-445a509bac03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_db22693b-1584-4b13-a8b8-1d6f3732a02c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_b1e459b7-0197-428b-8aca-cacb65384918" xlink:to="loc_us-gaap_DerivativeTable_db22693b-1584-4b13-a8b8-1d6f3732a02c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_60b5e8d1-58f8-433d-8984-aa00821ac996" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_db22693b-1584-4b13-a8b8-1d6f3732a02c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_60b5e8d1-58f8-433d-8984-aa00821ac996" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_60b5e8d1-58f8-433d-8984-aa00821ac996_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_60b5e8d1-58f8-433d-8984-aa00821ac996" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_60b5e8d1-58f8-433d-8984-aa00821ac996_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_07d514b3-d50d-4751-a6a3-dd4ce9503fc9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_60b5e8d1-58f8-433d-8984-aa00821ac996" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_07d514b3-d50d-4751-a6a3-dd4ce9503fc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_8f1449f5-99c4-47fc-acea-6141b685f02f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CallOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_07d514b3-d50d-4751-a6a3-dd4ce9503fc9" xlink:to="loc_us-gaap_CallOptionMember_8f1449f5-99c4-47fc-acea-6141b685f02f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_05c25293-d6a2-4e1b-a931-2c9a3475f579" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmbeddedDerivativeFinancialInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_07d514b3-d50d-4751-a6a3-dd4ce9503fc9" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_05c25293-d6a2-4e1b-a931-2c9a3475f579" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FiaEmbeddedDerivativesMember_67bb2c0f-126d-4895-8ad7-c3d5dd8c77d2" xlink:href="fnf-20201231.xsd#fnf_FiaEmbeddedDerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_07d514b3-d50d-4751-a6a3-dd4ce9503fc9" xlink:to="loc_fnf_FiaEmbeddedDerivativesMember_67bb2c0f-126d-4895-8ad7-c3d5dd8c77d2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_e3a61094-1de5-4bb7-864e-07f495b7e9fb" xlink:href="fnf-20201231.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_07d514b3-d50d-4751-a6a3-dd4ce9503fc9" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_e3a61094-1de5-4bb7-864e-07f495b7e9fb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_9af798bb-1cb0-4ff8-a0c6-055c40aa67e6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_db22693b-1584-4b13-a8b8-1d6f3732a02c" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_9af798bb-1cb0-4ff8-a0c6-055c40aa67e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_9af798bb-1cb0-4ff8-a0c6-055c40aa67e6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_9af798bb-1cb0-4ff8-a0c6-055c40aa67e6" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_9af798bb-1cb0-4ff8-a0c6-055c40aa67e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_a41d233a-de54-4950-8f9a-ef4cfb248d54" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_9af798bb-1cb0-4ff8-a0c6-055c40aa67e6" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_a41d233a-de54-4950-8f9a-ef4cfb248d54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherInvestedAssetsMember_e6e1d6f3-cc5b-4744-9c2c-0f03260f198c" xlink:href="fnf-20201231.xsd#fnf_OtherInvestedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_a41d233a-de54-4950-8f9a-ef4cfb248d54" xlink:to="loc_fnf_OtherInvestedAssetsMember_e6e1d6f3-cc5b-4744-9c2c-0f03260f198c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractHolderFundsMember_b526e3c8-6e79-4409-bdde-d8108094670b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractHolderFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_a41d233a-de54-4950-8f9a-ef4cfb248d54" xlink:to="loc_us-gaap_ContractHolderFundsMember_b526e3c8-6e79-4409-bdde-d8108094670b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_3a68b52d-bb87-4f54-8dc1-2a528cf0b1bd" xlink:href="fnf-20201231.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_a41d233a-de54-4950-8f9a-ef4cfb248d54" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_3a68b52d-bb87-4f54-8dc1-2a528cf0b1bd" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails" xlink:type="extended" id="i94505bab516d4064aa29e45f8651ae3d_DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_8bb985aa-b0a8-4825-a729-565492c14cc1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_e1e9f0df-fda6-46c6-817a-4e2505251260" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_8bb985aa-b0a8-4825-a729-565492c14cc1" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_e1e9f0df-fda6-46c6-817a-4e2505251260" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_4aab7169-58af-4b7a-83a9-7896c5b2b422" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_8bb985aa-b0a8-4825-a729-565492c14cc1" xlink:to="loc_us-gaap_DerivativeTable_4aab7169-58af-4b7a-83a9-7896c5b2b422" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_0648f2b1-cdf3-40aa-a32b-abc87e588a4c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_4aab7169-58af-4b7a-83a9-7896c5b2b422" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_0648f2b1-cdf3-40aa-a32b-abc87e588a4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_0648f2b1-cdf3-40aa-a32b-abc87e588a4c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_0648f2b1-cdf3-40aa-a32b-abc87e588a4c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_0648f2b1-cdf3-40aa-a32b-abc87e588a4c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_0648f2b1-cdf3-40aa-a32b-abc87e588a4c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_444e2b76-2184-4ed5-bd4b-172b1065fd51" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CallOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:to="loc_us-gaap_CallOptionMember_444e2b76-2184-4ed5-bd4b-172b1065fd51" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FutureMember_e7e4050c-b1ad-4071-b9de-4c7d138a5af5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FutureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:to="loc_us-gaap_FutureMember_e7e4050c-b1ad-4071-b9de-4c7d138a5af5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_fe2e6eab-fa00-478d-863f-1b25e8b8d0f8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_fe2e6eab-fa00-478d-863f-1b25e8b8d0f8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_77313735-426e-4b09-a352-dbfe442ef52b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmbeddedDerivativeFinancialInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_77313735-426e-4b09-a352-dbfe442ef52b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_db3b0a8c-8874-4968-a128-9f9ab40e1407" xlink:href="fnf-20201231.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_db3b0a8c-8874-4968-a128-9f9ab40e1407" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FiaEmbeddedDerivativesMember_906ef475-0ed9-4c37-8e1e-12c964e0b39c" xlink:href="fnf-20201231.xsd#fnf_FiaEmbeddedDerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ff79bdcc-7b65-4921-9b96-aa05a8165d07" xlink:to="loc_fnf_FiaEmbeddedDerivativesMember_906ef475-0ed9-4c37-8e1e-12c964e0b39c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_71e5f3a1-4046-430f-8705-d2c17a76d16e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_4aab7169-58af-4b7a-83a9-7896c5b2b422" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_71e5f3a1-4046-430f-8705-d2c17a76d16e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_71e5f3a1-4046-430f-8705-d2c17a76d16e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_71e5f3a1-4046-430f-8705-d2c17a76d16e" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_71e5f3a1-4046-430f-8705-d2c17a76d16e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_0729788b-1aa4-4e3a-b19d-f4d038b0ead3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_71e5f3a1-4046-430f-8705-d2c17a76d16e" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_0729788b-1aa4-4e3a-b19d-f4d038b0ead3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NetRealizedInvestmentGainsMember_8cf4c241-bb1e-44c4-9009-d7074557d11b" xlink:href="fnf-20201231.xsd#fnf_NetRealizedInvestmentGainsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_0729788b-1aa4-4e3a-b19d-f4d038b0ead3" xlink:to="loc_fnf_NetRealizedInvestmentGainsMember_8cf4c241-bb1e-44c4-9009-d7074557d11b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#DerivativeFinancialInstrumentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsNarrativeDetails" xlink:type="extended" id="i35f4f8f8db734d1795cba019d63a78c6_DerivativeFinancialInstrumentsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeTermofContractTermOne_ab92f7c1-dfcc-4cb3-9fa9-dd662446bbdc" xlink:href="fnf-20201231.xsd#fnf_DerivativeTermofContractTermOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_fnf_DerivativeTermofContractTermOne_ab92f7c1-dfcc-4cb3-9fa9-dd662446bbdc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeTermofContractTermTwo_6097f570-27b2-4822-9747-05371d2b6a47" xlink:href="fnf-20201231.xsd#fnf_DerivativeTermofContractTermTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_fnf_DerivativeTermofContractTermTwo_6097f570-27b2-4822-9747-05371d2b6a47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeTermofContractTermThree_31c36893-923f-4d4d-bc06-669cc4140d9c" xlink:href="fnf-20201231.xsd#fnf_DerivativeTermofContractTermThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_fnf_DerivativeTermofContractTermThree_31c36893-923f-4d4d-bc06-669cc4140d9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeTermOfContractTermFive_b700a1e0-80f1-47f0-be9b-ca2ea3014a92" xlink:href="fnf-20201231.xsd#fnf_DerivativeTermOfContractTermFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_fnf_DerivativeTermOfContractTermFive_b700a1e0-80f1-47f0-be9b-ca2ea3014a92" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_350bac04-8547-4e2a-b0ed-5056531d91c6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_350bac04-8547-4e2a-b0ed-5056531d91c6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_a6df6897-be15-41b6-93c1-c5b5136800aa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_a6df6897-be15-41b6-93c1-c5b5136800aa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_9f8d0c50-6b90-4caa-85ac-93c9607f6be0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_9f8d0c50-6b90-4caa-85ac-93c9607f6be0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_6ceb41c4-5dd1-4a66-a991-cf83d29ab99a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralAlreadyPostedAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_6ceb41c4-5dd1-4a66-a991-cf83d29ab99a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_1a10b7d6-1801-4534-9844-1902dd2ea47b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_f96b1e38-ee46-477c-9b1c-e0523792d068" xlink:to="loc_us-gaap_DerivativeTable_1a10b7d6-1801-4534-9844-1902dd2ea47b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_e7ed174f-436b-4518-9c29-bf3854b60f4c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_1a10b7d6-1801-4534-9844-1902dd2ea47b" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_e7ed174f-436b-4518-9c29-bf3854b60f4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_e7ed174f-436b-4518-9c29-bf3854b60f4c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_e7ed174f-436b-4518-9c29-bf3854b60f4c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_e7ed174f-436b-4518-9c29-bf3854b60f4c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_c4361daf-5ec9-4a9b-998f-0e0a6802855a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_e7ed174f-436b-4518-9c29-bf3854b60f4c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_c4361daf-5ec9-4a9b-998f-0e0a6802855a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_dd5196f3-ab38-4af7-a2b8-742d8374be24" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmbeddedDerivativeFinancialInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c4361daf-5ec9-4a9b-998f-0e0a6802855a" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_dd5196f3-ab38-4af7-a2b8-742d8374be24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_025d0622-5a8f-4438-ae81-045cd0f92b2d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CallOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c4361daf-5ec9-4a9b-998f-0e0a6802855a" xlink:to="loc_us-gaap_CallOptionMember_025d0622-5a8f-4438-ae81-045cd0f92b2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FutureMember_a9f20197-5b90-45dd-a64d-7550b2efa99d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FutureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c4361daf-5ec9-4a9b-998f-0e0a6802855a" xlink:to="loc_us-gaap_FutureMember_a9f20197-5b90-45dd-a64d-7550b2efa99d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_131e8093-6218-42ba-87af-3535f6a08153" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_1a10b7d6-1801-4534-9844-1902dd2ea47b" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_131e8093-6218-42ba-87af-3535f6a08153" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_131e8093-6218-42ba-87af-3535f6a08153_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_131e8093-6218-42ba-87af-3535f6a08153" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_131e8093-6218-42ba-87af-3535f6a08153_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_34a10efa-76fc-4041-8ecd-8795f7e03af2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_131e8093-6218-42ba-87af-3535f6a08153" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_34a10efa-76fc-4041-8ecd-8795f7e03af2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativesForTradingAndInvestmentMember_06e653c2-f124-4319-96e0-8449ac9c1388" xlink:href="fnf-20201231.xsd#fnf_DerivativesForTradingAndInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_34a10efa-76fc-4041-8ecd-8795f7e03af2" xlink:to="loc_fnf_DerivativesForTradingAndInvestmentMember_06e653c2-f124-4319-96e0-8449ac9c1388" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_eb2abcc1-4a04-4d15-b10c-de922918292f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_34a10efa-76fc-4041-8ecd-8795f7e03af2" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_eb2abcc1-4a04-4d15-b10c-de922918292f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_9a4fef86-d4d9-4865-b988-6826e076eed5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_1a10b7d6-1801-4534-9844-1902dd2ea47b" xlink:to="loc_us-gaap_HedgingDesignationAxis_9a4fef86-d4d9-4865-b988-6826e076eed5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_9a4fef86-d4d9-4865-b988-6826e076eed5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_9a4fef86-d4d9-4865-b988-6826e076eed5" xlink:to="loc_us-gaap_HedgingDesignationDomain_9a4fef86-d4d9-4865-b988-6826e076eed5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_bb5626ee-f8b9-4d23-ad39-1010d0345bfd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_9a4fef86-d4d9-4865-b988-6826e076eed5" xlink:to="loc_us-gaap_HedgingDesignationDomain_bb5626ee-f8b9-4d23-ad39-1010d0345bfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_7de0e82d-0be8-426e-b0a7-c2fcb05f2346" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_bb5626ee-f8b9-4d23-ad39-1010d0345bfd" xlink:to="loc_us-gaap_NondesignatedMember_7de0e82d-0be8-426e-b0a7-c2fcb05f2346" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail" xlink:type="simple" xlink:href="fnf-20201231.xsd#DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail" xlink:type="extended" id="i3178247a38454332b2a2e1de54459956_DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_cf286a8e-3d57-4208-8c0b-1dce93ad9a29" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_35df4789-b028-4cdf-b3bb-395394484241" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_cf286a8e-3d57-4208-8c0b-1dce93ad9a29" xlink:to="loc_us-gaap_DerivativeNotionalAmount_35df4789-b028-4cdf-b3bb-395394484241" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_4798ef9f-ff65-4cb2-b7ef-f44532c5b1f0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_cf286a8e-3d57-4208-8c0b-1dce93ad9a29" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_4798ef9f-ff65-4cb2-b7ef-f44532c5b1f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_31e66de6-16bb-4717-9f83-c4f01026261f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_cf286a8e-3d57-4208-8c0b-1dce93ad9a29" xlink:to="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_31e66de6-16bb-4717-9f83-c4f01026261f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_c5559175-475c-4e19-8a51-01af61aa596a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_cf286a8e-3d57-4208-8c0b-1dce93ad9a29" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_c5559175-475c-4e19-8a51-01af61aa596a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_86ab9373-9df1-4a0d-aa94-9b6d16ff8085" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_cf286a8e-3d57-4208-8c0b-1dce93ad9a29" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_86ab9373-9df1-4a0d-aa94-9b6d16ff8085" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_31d14a0e-ab73-4bc9-b688-adc5951d4b41" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_86ab9373-9df1-4a0d-aa94-9b6d16ff8085" xlink:to="loc_us-gaap_HedgingDesignationAxis_31d14a0e-ab73-4bc9-b688-adc5951d4b41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_31d14a0e-ab73-4bc9-b688-adc5951d4b41_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_31d14a0e-ab73-4bc9-b688-adc5951d4b41" xlink:to="loc_us-gaap_HedgingDesignationDomain_31d14a0e-ab73-4bc9-b688-adc5951d4b41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_2dca1e6a-4320-42f2-ab9e-8b68f4631931" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_31d14a0e-ab73-4bc9-b688-adc5951d4b41" xlink:to="loc_us-gaap_HedgingDesignationDomain_2dca1e6a-4320-42f2-ab9e-8b68f4631931" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_ee51b964-6064-4578-a77f-15020ba5a1c6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_2dca1e6a-4320-42f2-ab9e-8b68f4631931" xlink:to="loc_us-gaap_NondesignatedMember_ee51b964-6064-4578-a77f-15020ba5a1c6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_ceba896f-a427-4d42-a198-3b1440af7e48" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_86ab9373-9df1-4a0d-aa94-9b6d16ff8085" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_ceba896f-a427-4d42-a198-3b1440af7e48" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ceba896f-a427-4d42-a198-3b1440af7e48_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ceba896f-a427-4d42-a198-3b1440af7e48" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ceba896f-a427-4d42-a198-3b1440af7e48_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_00a118cb-9d18-4544-bd44-9831eb02540c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_ceba896f-a427-4d42-a198-3b1440af7e48" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_00a118cb-9d18-4544-bd44-9831eb02540c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_72a97b0e-6aac-4a1c-82de-c66cf11f169e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CallOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_00a118cb-9d18-4544-bd44-9831eb02540c" xlink:to="loc_us-gaap_CallOptionMember_72a97b0e-6aac-4a1c-82de-c66cf11f169e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_ebe99322-19c4-419b-bc26-50125ed3f612" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_86ab9373-9df1-4a0d-aa94-9b6d16ff8085" xlink:to="loc_srt_CounterpartyNameAxis_ebe99322-19c4-419b-bc26-50125ed3f612" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ebe99322-19c4-419b-bc26-50125ed3f612_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_ebe99322-19c4-419b-bc26-50125ed3f612" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ebe99322-19c4-419b-bc26-50125ed3f612_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_ebe99322-19c4-419b-bc26-50125ed3f612" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MerrillLynchMember_6f95ced3-7047-40d2-b5ce-a19e9d626024" xlink:href="fnf-20201231.xsd#fnf_MerrillLynchMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_MerrillLynchMember_6f95ced3-7047-40d2-b5ce-a19e9d626024" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MorganStanleyMember_f7c79b75-94a4-45aa-9753-ef527ec81835" xlink:href="fnf-20201231.xsd#fnf_MorganStanleyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_MorganStanleyMember_f7c79b75-94a4-45aa-9753-ef527ec81835" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BarclaysBankMember_18661f0f-a778-4ea8-b4b4-aa1a20529a58" xlink:href="fnf-20201231.xsd#fnf_BarclaysBankMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_BarclaysBankMember_18661f0f-a778-4ea8-b4b4-aa1a20529a58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CanadianImperialBankofCommerceMember_c9bf8a7a-da73-4f25-b2cc-b893a8088cad" xlink:href="fnf-20201231.xsd#fnf_CanadianImperialBankofCommerceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_CanadianImperialBankofCommerceMember_c9bf8a7a-da73-4f25-b2cc-b893a8088cad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WellsFargoMember_1db64f4b-c69a-4a4b-a79f-da51c3a825e4" xlink:href="fnf-20201231.xsd#fnf_WellsFargoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_WellsFargoMember_1db64f4b-c69a-4a4b-a79f-da51c3a825e4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GoldmanSachsMember_dcfc43d3-907e-4b84-bb42-4e324a5e7bdd" xlink:href="fnf-20201231.xsd#fnf_GoldmanSachsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_GoldmanSachsMember_dcfc43d3-907e-4b84-bb42-4e324a5e7bdd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CreditSuisseMember_839d2468-30df-4af1-bfe8-347c886a7751" xlink:href="fnf-20201231.xsd#fnf_CreditSuisseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_CreditSuisseMember_839d2468-30df-4af1-bfe8-347c886a7751" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TruistMember_8ced91d4-6fe4-406a-9c1e-9377db0a515a" xlink:href="fnf-20201231.xsd#fnf_TruistMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_12b2a086-1365-4e23-acdf-8e1205570229" xlink:to="loc_fnf_TruistMember_8ced91d4-6fe4-406a-9c1e-9377db0a515a" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayable" xlink:type="simple" xlink:href="fnf-20201231.xsd#NotesPayable"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayable" xlink:type="extended" id="if3675b55591543b29d620760d4246e84_NotesPayable"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DebtTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#DebtTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DebtTables" xlink:type="extended" id="i01b731bff2074f82a11f3c78237f455a_DebtTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayableScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#NotesPayableScheduleofLongTermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayableScheduleofLongTermDebtDetails" xlink:type="extended" id="i96fd75852cab469d97c716f6178b6e86_NotesPayableScheduleofLongTermDebtDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_ee05acc4-5b1f-4c4f-9ddd-b5049de2d253" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_a815dbf8-9f8f-4d23-adcc-a630f0663795" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ee05acc4-5b1f-4c4f-9ddd-b5049de2d253" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_a815dbf8-9f8f-4d23-adcc-a630f0663795" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_63e890b9-d398-48b1-be12-a217fb5b80b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ee05acc4-5b1f-4c4f-9ddd-b5049de2d253" xlink:to="loc_us-gaap_LongTermDebt_63e890b9-d398-48b1-be12-a217fb5b80b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_51796009-6a03-43b9-93aa-349f1de02f33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ee05acc4-5b1f-4c4f-9ddd-b5049de2d253" xlink:to="loc_us-gaap_DebtInstrumentTable_51796009-6a03-43b9-93aa-349f1de02f33" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_11b0fdd7-079f-4cc3-ab4f-08d5eec9d90a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_51796009-6a03-43b9-93aa-349f1de02f33" xlink:to="loc_us-gaap_DebtInstrumentAxis_11b0fdd7-079f-4cc3-ab4f-08d5eec9d90a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_11b0fdd7-079f-4cc3-ab4f-08d5eec9d90a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_11b0fdd7-079f-4cc3-ab4f-08d5eec9d90a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_11b0fdd7-079f-4cc3-ab4f-08d5eec9d90a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_11b0fdd7-079f-4cc3-ab4f-08d5eec9d90a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_6f622779-e792-4b3c-880c-80fec48ff61f" xlink:href="fnf-20201231.xsd#fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:to="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_6f622779-e792-4b3c-880c-80fec48ff61f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_a979a24e-7358-44ec-a98a-0574ef7c1d8c" xlink:href="fnf-20201231.xsd#fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:to="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_a979a24e-7358-44ec-a98a-0574ef7c1d8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member_921549f9-1d8a-4e2c-bccf-1ac7cb634f9c" xlink:href="fnf-20201231.xsd#fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:to="loc_fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member_921549f9-1d8a-4e2c-bccf-1ac7cb634f9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_Notes245Member_f9d92859-a8dd-4da9-8dac-9788c17fe8c4" xlink:href="fnf-20201231.xsd#fnf_Notes245Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:to="loc_fnf_Notes245Member_f9d92859-a8dd-4da9-8dac-9788c17fe8c4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RevolvingCreditFacilityDueApril2022Member_7e520e1f-a0f0-4a90-85b4-b903ab710bed" xlink:href="fnf-20201231.xsd#fnf_RevolvingCreditFacilityDueApril2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:to="loc_fnf_RevolvingCreditFacilityDueApril2022Member_7e520e1f-a0f0-4a90-85b4-b903ab710bed" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A550FGNotesMember_6c623d0f-8d13-4cff-b731-4d4f79ecf205" xlink:href="fnf-20201231.xsd#fnf_A550FGNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_dbd6a263-d626-4012-b048-a0c05208e11b" xlink:to="loc_fnf_A550FGNotesMember_6c623d0f-8d13-4cff-b731-4d4f79ecf205" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_d6491b2c-7135-4d82-8482-be6c318fe5d9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_51796009-6a03-43b9-93aa-349f1de02f33" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_d6491b2c-7135-4d82-8482-be6c318fe5d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d6491b2c-7135-4d82-8482-be6c318fe5d9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d6491b2c-7135-4d82-8482-be6c318fe5d9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d6491b2c-7135-4d82-8482-be6c318fe5d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_9e7985bc-d618-4b9c-914b-d2efc87f5b2b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d6491b2c-7135-4d82-8482-be6c318fe5d9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_9e7985bc-d618-4b9c-914b-d2efc87f5b2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_acd34fa5-62c0-48bc-8edc-afe4e8263464" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9e7985bc-d618-4b9c-914b-d2efc87f5b2b" xlink:to="loc_us-gaap_UnsecuredDebtMember_acd34fa5-62c0-48bc-8edc-afe4e8263464" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_1b64c150-a250-40da-8254-db48c0feb3d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9e7985bc-d618-4b9c-914b-d2efc87f5b2b" xlink:to="loc_us-gaap_LineOfCreditMember_1b64c150-a250-40da-8254-db48c0feb3d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_8635c6d1-b91c-4c07-bc5b-be1d2d569ab9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_51796009-6a03-43b9-93aa-349f1de02f33" xlink:to="loc_us-gaap_CreditFacilityAxis_8635c6d1-b91c-4c07-bc5b-be1d2d569ab9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_8635c6d1-b91c-4c07-bc5b-be1d2d569ab9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_8635c6d1-b91c-4c07-bc5b-be1d2d569ab9" xlink:to="loc_us-gaap_CreditFacilityDomain_8635c6d1-b91c-4c07-bc5b-be1d2d569ab9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_1ce109da-846c-4c4e-82ec-dbace190b311" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_8635c6d1-b91c-4c07-bc5b-be1d2d569ab9" xlink:to="loc_us-gaap_CreditFacilityDomain_1ce109da-846c-4c4e-82ec-dbace190b311" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_090cebf5-2d7d-4ad6-8780-3bdf636b7741" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_1ce109da-846c-4c4e-82ec-dbace190b311" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_090cebf5-2d7d-4ad6-8780-3bdf636b7741" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayableNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#NotesPayableNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayableNarrativeDetails" xlink:type="extended" id="i9bfcb66296704a0fbffd95d9d6db2402_NotesPayableNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_6f40180e-e348-4885-96d5-752eb4886290" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_6f40180e-e348-4885-96d5-752eb4886290" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_4639c8e3-8e27-445e-b789-496673a9801e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_4639c8e3-8e27-445e-b789-496673a9801e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_d5de4392-4619-45f4-9865-7dd712f7f257" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_d5de4392-4619-45f4-9865-7dd712f7f257" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_98bed72b-9530-4237-a754-3dfabc237978" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_98bed72b-9530-4237-a754-3dfabc237978" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ef63bd09-c14b-483a-bd45-f0933c813189" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ef63bd09-c14b-483a-bd45-f0933c813189" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_0b0345d2-f98e-420f-8f24-394430b6d9b3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_0b0345d2-f98e-420f-8f24-394430b6d9b3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_0754b3e5-efcc-4efc-9b06-766a44193a74" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_0754b3e5-efcc-4efc-9b06-766a44193a74" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_0ce57d9a-5e67-4e30-8d77-ac95d7f48bec" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_0ce57d9a-5e67-4e30-8d77-ac95d7f48bec" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_5d3fea79-8b21-497b-968f-3ddf3e1ffb10" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_5d3fea79-8b21-497b-968f-3ddf3e1ffb10" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes_b9045d41-004f-4387-9c1d-aba25867fffd" xlink:href="fnf-20201231.xsd#fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes_b9045d41-004f-4387-9c1d-aba25867fffd" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_7a798245-6bd8-4184-a0c4-e784f5652567" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_7a798245-6bd8-4184-a0c4-e784f5652567" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_1cee75b8-4e31-4136-bbd4-dfb7fbccb49e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_1cee75b8-4e31-4136-bbd4-dfb7fbccb49e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_f5618b53-da02-4dd2-9788-7e929c7c77d5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_f5618b53-da02-4dd2-9788-7e929c7c77d5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtInstrumentFloorInterestRate_214d7c25-1ab6-4a4f-bffd-b459227e2e42" xlink:href="fnf-20201231.xsd#fnf_DebtInstrumentFloorInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_fnf_DebtInstrumentFloorInterestRate_214d7c25-1ab6-4a4f-bffd-b459227e2e42" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_110d9189-73a6-4622-95a8-bf153f752527" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromLongTermLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_110d9189-73a6-4622-95a8-bf153f752527" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e9f04865-7b67-4891-8131-c077fda2c842" xlink:to="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_f27ea16a-ebc6-4014-92ce-19db257c03cf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:to="loc_us-gaap_DebtInstrumentAxis_f27ea16a-ebc6-4014-92ce-19db257c03cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_f27ea16a-ebc6-4014-92ce-19db257c03cf_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_f27ea16a-ebc6-4014-92ce-19db257c03cf" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_f27ea16a-ebc6-4014-92ce-19db257c03cf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_f27ea16a-ebc6-4014-92ce-19db257c03cf" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RevolvingCreditFacilityDueApril2022Member_c5d7645c-9181-407c-a335-ffa90bb59830" xlink:href="fnf-20201231.xsd#fnf_RevolvingCreditFacilityDueApril2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:to="loc_fnf_RevolvingCreditFacilityDueApril2022Member_c5d7645c-9181-407c-a335-ffa90bb59830" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A245SeniorNotesDueMarch2031Member_009bfc99-d15f-4584-9ca1-4cd90aa95099" xlink:href="fnf-20201231.xsd#fnf_A245SeniorNotesDueMarch2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:to="loc_fnf_A245SeniorNotesDueMarch2031Member_009bfc99-d15f-4584-9ca1-4cd90aa95099" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanCreditAgreementMember_05c7d76b-4cce-4561-8a95-fc714d0720b1" xlink:href="fnf-20201231.xsd#fnf_TermLoanCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:to="loc_fnf_TermLoanCreditAgreementMember_05c7d76b-4cce-4561-8a95-fc714d0720b1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A340NotesDueJune152030Member_0a9a50a6-bac8-4851-952c-d3348c3ffc70" xlink:href="fnf-20201231.xsd#fnf_A340NotesDueJune152030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:to="loc_fnf_A340NotesDueJune152030Member_0a9a50a6-bac8-4851-952c-d3348c3ffc70" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A550FGSeniorNotesDue2025Member_f1659698-48f4-4366-aa74-f0db33755acf" xlink:href="fnf-20201231.xsd#fnf_A550FGSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:to="loc_fnf_A550FGSeniorNotesDue2025Member_f1659698-48f4-4366-aa74-f0db33755acf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_80c5a642-296f-4ca9-8cb2-c812bdcce486" xlink:href="fnf-20201231.xsd#fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:to="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_80c5a642-296f-4ca9-8cb2-c812bdcce486" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_126255d3-bbca-400f-be90-d5b0fa9d7f5a" xlink:href="fnf-20201231.xsd#fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3607a781-9b27-4756-8c88-03622b3e2a2c" xlink:to="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_126255d3-bbca-400f-be90-d5b0fa9d7f5a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_a887ef30-3573-40d0-b56f-58651cc5c090" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_a887ef30-3573-40d0-b56f-58651cc5c090" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a887ef30-3573-40d0-b56f-58651cc5c090_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_a887ef30-3573-40d0-b56f-58651cc5c090" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a887ef30-3573-40d0-b56f-58651cc5c090_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_570aa531-2762-44a5-8656-246b58eb1ae0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_a887ef30-3573-40d0-b56f-58651cc5c090" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_570aa531-2762-44a5-8656-246b58eb1ae0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_d4709a63-8d8b-4105-9b31-cb4f2305b636" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_570aa531-2762-44a5-8656-246b58eb1ae0" xlink:to="loc_us-gaap_LineOfCreditMember_d4709a63-8d8b-4105-9b31-cb4f2305b636" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanMember_9e143d43-a13f-4263-a56d-0fc4b3ff0693" xlink:href="fnf-20201231.xsd#fnf_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_570aa531-2762-44a5-8656-246b58eb1ae0" xlink:to="loc_fnf_TermLoanMember_9e143d43-a13f-4263-a56d-0fc4b3ff0693" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_c993933f-0f06-44b1-9b10-afe57ad3ff0a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_570aa531-2762-44a5-8656-246b58eb1ae0" xlink:to="loc_us-gaap_UnsecuredDebtMember_c993933f-0f06-44b1-9b10-afe57ad3ff0a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_c7d57512-5c71-4dde-a8ca-fa846e9a72f5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:to="loc_us-gaap_CreditFacilityAxis_c7d57512-5c71-4dde-a8ca-fa846e9a72f5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_c7d57512-5c71-4dde-a8ca-fa846e9a72f5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_c7d57512-5c71-4dde-a8ca-fa846e9a72f5" xlink:to="loc_us-gaap_CreditFacilityDomain_c7d57512-5c71-4dde-a8ca-fa846e9a72f5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_af38731c-c963-4f02-b673-ed5ed05498a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_c7d57512-5c71-4dde-a8ca-fa846e9a72f5" xlink:to="loc_us-gaap_CreditFacilityDomain_af38731c-c963-4f02-b673-ed5ed05498a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_af6c9689-8a8f-497c-a64f-952b5dbe10ce" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_af38731c-c963-4f02-b673-ed5ed05498a7" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_af6c9689-8a8f-497c-a64f-952b5dbe10ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_bf4dec01-ff4a-4348-8b31-b483294878d5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_bf4dec01-ff4a-4348-8b31-b483294878d5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_bf4dec01-ff4a-4348-8b31-b483294878d5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_bf4dec01-ff4a-4348-8b31-b483294878d5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_bf4dec01-ff4a-4348-8b31-b483294878d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fae3ff10-0219-4dae-aa28-faec46e14b56" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_bf4dec01-ff4a-4348-8b31-b483294878d5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fae3ff10-0219-4dae-aa28-faec46e14b56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGLHoldingsMember_ad0623f3-61b2-4b1e-b904-b21507e44f53" xlink:href="fnf-20201231.xsd#fnf_FGLHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fae3ff10-0219-4dae-aa28-faec46e14b56" xlink:to="loc_fnf_FGLHoldingsMember_ad0623f3-61b2-4b1e-b904-b21507e44f53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_6dfc70c7-ecc0-4e45-8b08-b0002810ce45" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:to="loc_us-gaap_VariableRateAxis_6dfc70c7-ecc0-4e45-8b08-b0002810ce45" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_6dfc70c7-ecc0-4e45-8b08-b0002810ce45_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_6dfc70c7-ecc0-4e45-8b08-b0002810ce45" xlink:to="loc_us-gaap_VariableRateDomain_6dfc70c7-ecc0-4e45-8b08-b0002810ce45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_6737e32c-47d7-42bf-ae0c-5c77e9872518" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_6dfc70c7-ecc0-4e45-8b08-b0002810ce45" xlink:to="loc_us-gaap_VariableRateDomain_6737e32c-47d7-42bf-ae0c-5c77e9872518" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_771700ba-9462-42b4-b595-7666fc0b1355" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_6737e32c-47d7-42bf-ae0c-5c77e9872518" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_771700ba-9462-42b4-b595-7666fc0b1355" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_b3be1ed0-9709-43c6-bd5f-e718bce3bbe1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_6737e32c-47d7-42bf-ae0c-5c77e9872518" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_b3be1ed0-9709-43c6-bd5f-e718bce3bbe1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_0efa4190-f5de-4cd9-8117-61492e545d6d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_7e89f340-354a-455b-a3ca-546485e938b0" xlink:to="loc_srt_RangeAxis_0efa4190-f5de-4cd9-8117-61492e545d6d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_0efa4190-f5de-4cd9-8117-61492e545d6d_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_0efa4190-f5de-4cd9-8117-61492e545d6d" xlink:to="loc_srt_RangeMember_0efa4190-f5de-4cd9-8117-61492e545d6d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_05ccc54a-ac8a-4a62-a7db-a43134b4bec1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_0efa4190-f5de-4cd9-8117-61492e545d6d" xlink:to="loc_srt_RangeMember_05ccc54a-ac8a-4a62-a7db-a43134b4bec1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_a0e2bb15-1835-4638-855a-ce548c853b9a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_05ccc54a-ac8a-4a62-a7db-a43134b4bec1" xlink:to="loc_srt_MinimumMember_a0e2bb15-1835-4638-855a-ce548c853b9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7e7840a6-2c89-487a-9412-811bd989b619" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_05ccc54a-ac8a-4a62-a7db-a43134b4bec1" xlink:to="loc_srt_MaximumMember_7e7840a6-2c89-487a-9412-811bd989b619" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayablePrincipalMaturitiesofNotesPayableDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#NotesPayablePrincipalMaturitiesofNotesPayableDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayablePrincipalMaturitiesofNotesPayableDetails" xlink:type="extended" id="i62434f4127ba4f68ba30cc35506f5e2a_NotesPayablePrincipalMaturitiesofNotesPayableDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingencies" xlink:type="simple" xlink:href="fnf-20201231.xsd#CommitmentsandContingencies"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingencies" xlink:type="extended" id="i9c74f5015d8748feb9de06321b40683d_CommitmentsandContingencies"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingenciesTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#CommitmentsandContingenciesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingenciesTables" xlink:type="extended" id="if668db8d8acd4e20839d3fa8a574a642_CommitmentsandContingenciesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#CommitmentsandContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="extended" id="ib37aeef476c441bfa0afc588ddddad04_CommitmentsandContingenciesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_cddae9ed-552d-42f6-99bf-42676c318599" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationReserve_28d085e0-0ffc-4349-b560-c236a2fac03d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LitigationReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_cddae9ed-552d-42f6-99bf-42676c318599" xlink:to="loc_us-gaap_LitigationReserve_28d085e0-0ffc-4349-b560-c236a2fac03d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNewClaimsFiledNumber_88e80555-80bb-41bb-ad9d-6139eaa0b21a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyNewClaimsFiledNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_cddae9ed-552d-42f6-99bf-42676c318599" xlink:to="loc_us-gaap_LossContingencyNewClaimsFiledNumber_88e80555-80bb-41bb-ad9d-6139eaa0b21a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LossContingencyNumberOfSharesInWhichAssertedStatutoryAppraisalRightsHaveBeenClaimed_2d5bd9c9-71e0-40e0-8278-ffb966189d5e" xlink:href="fnf-20201231.xsd#fnf_LossContingencyNumberOfSharesInWhichAssertedStatutoryAppraisalRightsHaveBeenClaimed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_cddae9ed-552d-42f6-99bf-42676c318599" xlink:to="loc_fnf_LossContingencyNumberOfSharesInWhichAssertedStatutoryAppraisalRightsHaveBeenClaimed_2d5bd9c9-71e0-40e0-8278-ffb966189d5e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EscrowDeposit_800f3ba0-094f-419b-98e5-fcbe59646409" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EscrowDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_cddae9ed-552d-42f6-99bf-42676c318599" xlink:to="loc_us-gaap_EscrowDeposit_800f3ba0-094f-419b-98e5-fcbe59646409" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitment_a7f407a8-6037-4196-b17d-d8561a89295c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_cddae9ed-552d-42f6-99bf-42676c318599" xlink:to="loc_us-gaap_OtherCommitment_a7f407a8-6037-4196-b17d-d8561a89295c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_2c11e3fc-773e-4fe2-b957-8884dd7ba87d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_cddae9ed-552d-42f6-99bf-42676c318599" xlink:to="loc_us-gaap_OtherCommitmentsTable_2c11e3fc-773e-4fe2-b957-8884dd7ba87d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_3b6f4fe1-0e37-4309-a7e8-073032136102" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_2c11e3fc-773e-4fe2-b957-8884dd7ba87d" xlink:to="loc_srt_LitigationCaseAxis_3b6f4fe1-0e37-4309-a7e8-073032136102" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_3b6f4fe1-0e37-4309-a7e8-073032136102_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_3b6f4fe1-0e37-4309-a7e8-073032136102" xlink:to="loc_srt_LitigationCaseTypeDomain_3b6f4fe1-0e37-4309-a7e8-073032136102_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_37966452-8509-4284-b65c-6517e7854d30" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_3b6f4fe1-0e37-4309-a7e8-073032136102" xlink:to="loc_srt_LitigationCaseTypeDomain_37966452-8509-4284-b65c-6517e7854d30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MatterOfFGLHoldingsMember_7bb54ab2-e308-4763-bb6c-05e487a87fb9" xlink:href="fnf-20201231.xsd#fnf_MatterOfFGLHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_37966452-8509-4284-b65c-6517e7854d30" xlink:to="loc_fnf_MatterOfFGLHoldingsMember_7bb54ab2-e308-4763-bb6c-05e487a87fb9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_7f7595fa-fbe6-4007-bbf6-1e6cf94a37c4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_2c11e3fc-773e-4fe2-b957-8884dd7ba87d" xlink:to="loc_us-gaap_OtherCommitmentsAxis_7f7595fa-fbe6-4007-bbf6-1e6cf94a37c4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_7f7595fa-fbe6-4007-bbf6-1e6cf94a37c4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_7f7595fa-fbe6-4007-bbf6-1e6cf94a37c4" xlink:to="loc_us-gaap_OtherCommitmentsDomain_7f7595fa-fbe6-4007-bbf6-1e6cf94a37c4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_3ea4503c-3195-435a-991d-b66ff9ef6ecf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_7f7595fa-fbe6-4007-bbf6-1e6cf94a37c4" xlink:to="loc_us-gaap_OtherCommitmentsDomain_3ea4503c-3195-435a-991d-b66ff9ef6ecf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SubscriptionAgreementsSubscriptionAgreementsWithPaysafeLimitedAndFoleyTrasimeneAcquisitionCorpIIMember_31e33e3c-d609-4a15-abfa-af140184ef3d" xlink:href="fnf-20201231.xsd#fnf_SubscriptionAgreementsSubscriptionAgreementsWithPaysafeLimitedAndFoleyTrasimeneAcquisitionCorpIIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_3ea4503c-3195-435a-991d-b66ff9ef6ecf" xlink:to="loc_fnf_SubscriptionAgreementsSubscriptionAgreementsWithPaysafeLimitedAndFoleyTrasimeneAcquisitionCorpIIMember_31e33e3c-d609-4a15-abfa-af140184ef3d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4c15ed9-20f2-47ea-90f0-449bbb51bb9f" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_2c11e3fc-773e-4fe2-b957-8884dd7ba87d" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4c15ed9-20f2-47ea-90f0-449bbb51bb9f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_d4c15ed9-20f2-47ea-90f0-449bbb51bb9f_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4c15ed9-20f2-47ea-90f0-449bbb51bb9f" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_d4c15ed9-20f2-47ea-90f0-449bbb51bb9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_00d0060a-978f-44f7-a923-7ac02f461174" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4c15ed9-20f2-47ea-90f0-449bbb51bb9f" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_00d0060a-978f-44f7-a923-7ac02f461174" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PaysafeLimitedMember_425f3552-a15d-4b37-b5d6-9ce1fe200676" xlink:href="fnf-20201231.xsd#fnf_PaysafeLimitedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_00d0060a-978f-44f7-a923-7ac02f461174" xlink:to="loc_fnf_PaysafeLimitedMember_425f3552-a15d-4b37-b5d6-9ce1fe200676" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingenciesScheduleofUnfundedCommitmentsbyInvestedAssetClassDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#CommitmentsandContingenciesScheduleofUnfundedCommitmentsbyInvestedAssetClassDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingenciesScheduleofUnfundedCommitmentsbyInvestedAssetClassDetails" xlink:type="extended" id="ica3aa052a68e4aaca4cb9a4558e6a923_CommitmentsandContingenciesScheduleofUnfundedCommitmentsbyInvestedAssetClassDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_e2627199-d76f-450f-bed6-aeaef2dc6e55" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitment_ae8b31ea-8dcf-4bba-840a-1f9c06c6b27e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_e2627199-d76f-450f-bed6-aeaef2dc6e55" xlink:to="loc_us-gaap_OtherCommitment_ae8b31ea-8dcf-4bba-840a-1f9c06c6b27e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_3187619a-bece-47f5-a206-9b23786c1bdd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_e2627199-d76f-450f-bed6-aeaef2dc6e55" xlink:to="loc_us-gaap_OtherCommitmentsTable_3187619a-bece-47f5-a206-9b23786c1bdd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_1153b468-b362-4987-b94d-0b58680ccc4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_3187619a-bece-47f5-a206-9b23786c1bdd" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_1153b468-b362-4987-b94d-0b58680ccc4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_1153b468-b362-4987-b94d-0b58680ccc4f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_1153b468-b362-4987-b94d-0b58680ccc4f" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_1153b468-b362-4987-b94d-0b58680ccc4f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_1153b468-b362-4987-b94d-0b58680ccc4f" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsMember_a9f08904-91dc-4af8-8655-f2cdef1f4320" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:to="loc_us-gaap_EquityMethodInvestmentsMember_a9f08904-91dc-4af8-8655-f2cdef1f4320" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_b2a0e1cd-7cf6-431b-b80c-be134b14094a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:to="loc_us-gaap_EquitySecuritiesMember_b2a0e1cd-7cf6-431b-b80c-be134b14094a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedMaturitiesAvailableForSaleMember_bb9b27e8-88fc-4954-8e97-c1dd5675922b" xlink:href="fnf-20201231.xsd#fnf_FixedMaturitiesAvailableForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:to="loc_fnf_FixedMaturitiesAvailableForSaleMember_bb9b27e8-88fc-4954-8e97-c1dd5675922b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMember_403964fb-c2d6-44aa-87cf-94ae19b0136c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:to="loc_us-gaap_OtherAssetsMember_403964fb-c2d6-44aa-87cf-94ae19b0136c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_391de67c-f70c-4381-aa80-a41b796d1a9d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_391de67c-f70c-4381-aa80-a41b796d1a9d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_a1474696-00e8-4596-a716-77da93cfab07" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResidentialMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4adaecf0-c6b8-41a4-a502-919f0378d97a" xlink:to="loc_us-gaap_ResidentialMortgageMember_a1474696-00e8-4596-a716-77da93cfab07" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_6355ecb9-839e-4deb-b970-9ce41571c7dc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_3187619a-bece-47f5-a206-9b23786c1bdd" xlink:to="loc_us-gaap_OtherCommitmentsAxis_6355ecb9-839e-4deb-b970-9ce41571c7dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_6355ecb9-839e-4deb-b970-9ce41571c7dc_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_6355ecb9-839e-4deb-b970-9ce41571c7dc" xlink:to="loc_us-gaap_OtherCommitmentsDomain_6355ecb9-839e-4deb-b970-9ce41571c7dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_5c04196c-0fed-4357-b0cc-7c1f52832278" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_6355ecb9-839e-4deb-b970-9ce41571c7dc" xlink:to="loc_us-gaap_OtherCommitmentsDomain_5c04196c-0fed-4357-b0cc-7c1f52832278" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommitmenttoInvestMember_1db12602-3b26-4911-b646-3be741bef02c" xlink:href="fnf-20201231.xsd#fnf_CommitmenttoInvestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_5c04196c-0fed-4357-b0cc-7c1f52832278" xlink:to="loc_fnf_CommitmenttoInvestMember_1db12602-3b26-4911-b646-3be741bef02c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Dividends" xlink:type="simple" xlink:href="fnf-20201231.xsd#Dividends"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Dividends" xlink:type="extended" id="i58e84efabe984d2e9f69fb311efcbf9b_Dividends"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DividendsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#DividendsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DividendsDetails" xlink:type="extended" id="ifd3c7e823fdd4d1f9e0307fe53e804c9_DividendsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_5b55eed7-52be-4681-accc-e92b35777423" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_154964e9-e8a0-4e1d-a3af-a9d38bb833ba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_5b55eed7-52be-4681-accc-e92b35777423" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_154964e9-e8a0-4e1d-a3af-a9d38bb833ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_043bd98c-b819-4711-ad12-28ec6239603e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_5b55eed7-52be-4681-accc-e92b35777423" xlink:to="loc_us-gaap_SubsequentEventTable_043bd98c-b819-4711-ad12-28ec6239603e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_f66e5ba4-eaeb-412b-81aa-3d412e2d6354" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_043bd98c-b819-4711-ad12-28ec6239603e" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_f66e5ba4-eaeb-412b-81aa-3d412e2d6354" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_f66e5ba4-eaeb-412b-81aa-3d412e2d6354_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_f66e5ba4-eaeb-412b-81aa-3d412e2d6354" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_f66e5ba4-eaeb-412b-81aa-3d412e2d6354_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_2d1345ce-d38d-48a7-a335-506c0ea6ef0e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_f66e5ba4-eaeb-412b-81aa-3d412e2d6354" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_2d1345ce-d38d-48a7-a335-506c0ea6ef0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_46e3a0a6-fabb-428c-bc5b-406ee247c036" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_2d1345ce-d38d-48a7-a335-506c0ea6ef0e" xlink:to="loc_us-gaap_SubsequentEventMember_46e3a0a6-fabb-428c-bc5b-406ee247c036" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SegmentInformation" xlink:type="simple" xlink:href="fnf-20201231.xsd#SegmentInformation"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SegmentInformation" xlink:type="extended" id="i3974ad13d6814c24923d00193efc0dfc_SegmentInformation"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SegmentInformationTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#SegmentInformationTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SegmentInformationTables" xlink:type="extended" id="i03fe31a769d744829f7b32e7716c534c_SegmentInformationTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SegmentInformationScheduleofSegmentReportingInformationDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#SegmentInformationScheduleofSegmentReportingInformationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SegmentInformationScheduleofSegmentReportingInformationDetails" xlink:type="extended" id="ib577ca7dce8e451182dc051b1bfcf35b_SegmentInformationScheduleofSegmentReportingInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PremiumsWrittenNet_b5c99c6f-2e29-4e4e-823f-88391be05e83" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PremiumsWrittenNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_PremiumsWrittenNet_b5c99c6f-2e29-4e4e-823f-88391be05e83" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceCommissionsAndFees_b8903776-94ee-44bd-b2a4-1171745fa14e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InsuranceCommissionsAndFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_InsuranceCommissionsAndFees_b8903776-94ee-44bd-b2a4-1171745fa14e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceServicesRevenue_15484b4b-b6c2-4554-b3bb-66b7b5fa4424" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InsuranceServicesRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_InsuranceServicesRevenue_15484b4b-b6c2-4554-b3bb-66b7b5fa4424" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NetInvestmentIncomeAndGainLossOnInvestments_c25d5fe4-373b-4b4e-af46-d010cf728abd" xlink:href="fnf-20201231.xsd#fnf_NetInvestmentIncomeAndGainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_fnf_NetInvestmentIncomeAndGainLossOnInvestments_c25d5fe4-373b-4b4e-af46-d010cf728abd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_b11b8034-f839-4768-a36f-7e6ca7b388ca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_Revenues_b11b8034-f839-4768-a36f-7e6ca7b388ca" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_5638a421-defb-43de-b926-cb55fc6a40e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_DepreciationAndAmortization_5638a421-defb-43de-b926-cb55fc6a40e7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_fd13dac7-3240-40ce-bf6b-46fb11bf76df" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_InterestExpense_fd13dac7-3240-40ce-bf6b-46fb11bf76df" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_a6010872-047a-49d9-a6f0-b4fc2819afed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_a6010872-047a-49d9-a6f0-b4fc2819afed" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_87ca8325-29e0-40f8-b247-3bfffb2c0bef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_87ca8325-29e0-40f8-b247-3bfffb2c0bef" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncomeLossFromContinuingOperationsBeforeMinorityInterestAndIncomeLossOnEquityMethodInvestmentsNetOfIncomeTax_29f14774-bbf4-4645-90b3-0e32f92c09d8" xlink:href="fnf-20201231.xsd#fnf_IncomeLossFromContinuingOperationsBeforeMinorityInterestAndIncomeLossOnEquityMethodInvestmentsNetOfIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_fnf_IncomeLossFromContinuingOperationsBeforeMinorityInterestAndIncomeLossOnEquityMethodInvestmentsNetOfIncomeTax_29f14774-bbf4-4645-90b3-0e32f92c09d8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_3f4bdc48-a674-4e95-af52-d0ced6348677" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_3f4bdc48-a674-4e95-af52-d0ced6348677" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_b6a21a3e-800b-48ee-bdaa-804b9db69051" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_b6a21a3e-800b-48ee-bdaa-804b9db69051" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_a6833f64-d949-4af6-877e-2362df3bcdb3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_Assets_a6833f64-d949-4af6-877e-2362df3bcdb3" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_554365ff-4e4f-4201-90f6-9bab8eddd64c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_Goodwill_554365ff-4e4f-4201-90f6-9bab8eddd64c" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4951a5ab-decf-439b-919f-7f308cae0f7b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9aced2da-2ea3-4d21-a629-dbbd3520a2fd" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4951a5ab-decf-439b-919f-7f308cae0f7b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_15972994-cc3e-4f11-aa76-7bee9b9834ee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4951a5ab-decf-439b-919f-7f308cae0f7b" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_15972994-cc3e-4f11-aa76-7bee9b9834ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_15972994-cc3e-4f11-aa76-7bee9b9834ee_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_15972994-cc3e-4f11-aa76-7bee9b9834ee" xlink:to="loc_us-gaap_SegmentDomain_15972994-cc3e-4f11-aa76-7bee9b9834ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_b8ab46ab-2429-4019-95b4-e4737ea361ef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_15972994-cc3e-4f11-aa76-7bee9b9834ee" xlink:to="loc_us-gaap_SegmentDomain_b8ab46ab-2429-4019-95b4-e4737ea361ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_7d065b18-1767-4a08-b04c-3059246f7244" xlink:href="fnf-20201231.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_b8ab46ab-2429-4019-95b4-e4737ea361ef" xlink:to="loc_fnf_TitleSegmentMember_7d065b18-1767-4a08-b04c-3059246f7244" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGSegmentMember_3bce9c78-c09d-4244-86e2-87ceb6b0f08a" xlink:href="fnf-20201231.xsd#fnf_FGSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_b8ab46ab-2429-4019-95b4-e4737ea361ef" xlink:to="loc_fnf_FGSegmentMember_3bce9c78-c09d-4244-86e2-87ceb6b0f08a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateAndOtherMember_183e1917-338f-4beb-aa0d-06a098521114" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_b8ab46ab-2429-4019-95b4-e4737ea361ef" xlink:to="loc_us-gaap_CorporateAndOtherMember_183e1917-338f-4beb-aa0d-06a098521114" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SegmentInformationPremiumsandAnnuityDepositsNetofReinsurancebyTypeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#SegmentInformationPremiumsandAnnuityDepositsNetofReinsurancebyTypeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SegmentInformationPremiumsandAnnuityDepositsNetofReinsurancebyTypeDetails" xlink:type="extended" id="if23ae6f292134a5da1d9d74f8cb00bbf_SegmentInformationPremiumsandAnnuityDepositsNetofReinsurancebyTypeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_7709b42c-2956-40f7-aac9-9863988e0993" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PremiumAndAnnuityDepositsNetOfReinsurance_f69f6527-e46a-40bb-a55b-a894d1717716" xlink:href="fnf-20201231.xsd#fnf_PremiumAndAnnuityDepositsNetOfReinsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_7709b42c-2956-40f7-aac9-9863988e0993" xlink:to="loc_fnf_PremiumAndAnnuityDepositsNetOfReinsurance_f69f6527-e46a-40bb-a55b-a894d1717716" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d16c5679-ce2b-4fe1-828b-80d4308b43f3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_7709b42c-2956-40f7-aac9-9863988e0993" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d16c5679-ce2b-4fe1-828b-80d4308b43f3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_63ae7c47-48cd-4844-aa6b-a6a302f9c240" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d16c5679-ce2b-4fe1-828b-80d4308b43f3" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_63ae7c47-48cd-4844-aa6b-a6a302f9c240" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_63ae7c47-48cd-4844-aa6b-a6a302f9c240_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_63ae7c47-48cd-4844-aa6b-a6a302f9c240" xlink:to="loc_us-gaap_SegmentDomain_63ae7c47-48cd-4844-aa6b-a6a302f9c240_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_35899405-1286-4497-b505-b87f59c72423" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_63ae7c47-48cd-4844-aa6b-a6a302f9c240" xlink:to="loc_us-gaap_SegmentDomain_35899405-1286-4497-b505-b87f59c72423" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGSegmentMember_69455742-3cf0-4624-85c6-25d1bd0b655a" xlink:href="fnf-20201231.xsd#fnf_FGSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_35899405-1286-4497-b505-b87f59c72423" xlink:to="loc_fnf_FGSegmentMember_69455742-3cf0-4624-85c6-25d1bd0b655a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_3722fe71-f16c-4ca6-87cd-da8ca1f00bb4" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d16c5679-ce2b-4fe1-828b-80d4308b43f3" xlink:to="loc_srt_ProductOrServiceAxis_3722fe71-f16c-4ca6-87cd-da8ca1f00bb4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_3722fe71-f16c-4ca6-87cd-da8ca1f00bb4_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_3722fe71-f16c-4ca6-87cd-da8ca1f00bb4" xlink:to="loc_srt_ProductsAndServicesDomain_3722fe71-f16c-4ca6-87cd-da8ca1f00bb4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_dee0e34a-5b43-4555-b5a7-4d62cffb5552" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_3722fe71-f16c-4ca6-87cd-da8ca1f00bb4" xlink:to="loc_srt_ProductsAndServicesDomain_dee0e34a-5b43-4555-b5a7-4d62cffb5552" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedIndexAnnuityMember_9e6ed8bd-5d6e-463b-be9a-22632cd927d9" xlink:href="fnf-20201231.xsd#fnf_FixedIndexAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_dee0e34a-5b43-4555-b5a7-4d62cffb5552" xlink:to="loc_fnf_FixedIndexAnnuityMember_9e6ed8bd-5d6e-463b-be9a-22632cd927d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedRateAnnuitiesMember_8182bbe2-374b-4705-bbb8-b9dd1c6af3bb" xlink:href="fnf-20201231.xsd#fnf_FixedRateAnnuitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_dee0e34a-5b43-4555-b5a7-4d62cffb5552" xlink:to="loc_fnf_FixedRateAnnuitiesMember_8182bbe2-374b-4705-bbb8-b9dd1c6af3bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SinglePremiumImmediateAnnuityMember_cf273e8c-6f41-4198-9268-96438f4e98c3" xlink:href="fnf-20201231.xsd#fnf_SinglePremiumImmediateAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_dee0e34a-5b43-4555-b5a7-4d62cffb5552" xlink:to="loc_fnf_SinglePremiumImmediateAnnuityMember_cf273e8c-6f41-4198-9268-96438f4e98c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LifeInsuranceMember_5f5a2d63-77ed-4bfa-ae0d-c4273debb83a" xlink:href="fnf-20201231.xsd#fnf_LifeInsuranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_dee0e34a-5b43-4555-b5a7-4d62cffb5552" xlink:to="loc_fnf_LifeInsuranceMember_5f5a2d63-77ed-4bfa-ae0d-c4273debb83a" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SupplementalCashFlowInformation" xlink:type="simple" xlink:href="fnf-20201231.xsd#SupplementalCashFlowInformation"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SupplementalCashFlowInformation" xlink:type="extended" id="i503790736d62416bb11ade4c2cc14bcf_SupplementalCashFlowInformation"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SupplementalCashFlowInformationTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#SupplementalCashFlowInformationTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SupplementalCashFlowInformationTables" xlink:type="extended" id="i76a73bb130354a57a900869eac0c6df3_SupplementalCashFlowInformationTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SupplementalCashFlowInformationDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#SupplementalCashFlowInformationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SupplementalCashFlowInformationDetails" xlink:type="extended" id="i459352deaaad4afe96905f28419a6b88_SupplementalCashFlowInformationDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognition" xlink:type="simple" xlink:href="fnf-20201231.xsd#RevenueRecognition"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognition" xlink:type="extended" id="if0c5643d1af34fa29256639cf5b41428_RevenueRecognition"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognitionTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#RevenueRecognitionTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognitionTables" xlink:type="extended" id="ib51ec173a62a4f059062af3b9a419b11_RevenueRecognitionTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#RevenueRecognitionDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="extended" id="i44b9c1b0ab4e41898b16afe7c8793b72_RevenueRecognitionDisaggregationofRevenueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_e141a631-6c13-403b-a5a7-2efb0cbc2d10" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6732777a-24eb-451a-8841-96ede740bd85" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e141a631-6c13-403b-a5a7-2efb0cbc2d10" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6732777a-24eb-451a-8841-96ede740bd85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_9fa76108-19b5-4f68-b7a1-1bac5ab2e5dc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FeesAndCommissionsMortgageBankingAndServicing"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e141a631-6c13-403b-a5a7-2efb0cbc2d10" xlink:to="loc_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_9fa76108-19b5-4f68-b7a1-1bac5ab2e5dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentIncome_d81a51a1-d9f0-4b63-828e-2b591fd837ca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e141a631-6c13-403b-a5a7-2efb0cbc2d10" xlink:to="loc_us-gaap_NetInvestmentIncome_d81a51a1-d9f0-4b63-828e-2b591fd837ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_e218a1d8-4d88-4751-aaf6-1c5fc3ebb550" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e141a631-6c13-403b-a5a7-2efb0cbc2d10" xlink:to="loc_us-gaap_GainLossOnInvestments_e218a1d8-4d88-4751-aaf6-1c5fc3ebb550" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_00b50e96-050d-41d3-8d54-42e4863e2c23" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e141a631-6c13-403b-a5a7-2efb0cbc2d10" xlink:to="loc_us-gaap_Revenues_00b50e96-050d-41d3-8d54-42e4863e2c23" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_ccf2464f-c0f4-4b40-a1ef-8d6b45bcc9cc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e141a631-6c13-403b-a5a7-2efb0cbc2d10" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_ccf2464f-c0f4-4b40-a1ef-8d6b45bcc9cc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_4b26f554-b910-4753-8ec2-41612ab5485c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ccf2464f-c0f4-4b40-a1ef-8d6b45bcc9cc" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_4b26f554-b910-4753-8ec2-41612ab5485c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_4b26f554-b910-4753-8ec2-41612ab5485c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4b26f554-b910-4753-8ec2-41612ab5485c" xlink:to="loc_us-gaap_SegmentDomain_4b26f554-b910-4753-8ec2-41612ab5485c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_943631d6-12bf-4e7b-9776-1652784c9d89" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4b26f554-b910-4753-8ec2-41612ab5485c" xlink:to="loc_us-gaap_SegmentDomain_943631d6-12bf-4e7b-9776-1652784c9d89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_bbfa4bc0-7f81-4229-8a94-fc488d2b08e3" xlink:href="fnf-20201231.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_943631d6-12bf-4e7b-9776-1652784c9d89" xlink:to="loc_fnf_TitleSegmentMember_bbfa4bc0-7f81-4229-8a94-fc488d2b08e3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGSegmentMember_adbe73ae-c899-4e22-97c5-f0bbcec07c9a" xlink:href="fnf-20201231.xsd#fnf_FGSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_943631d6-12bf-4e7b-9776-1652784c9d89" xlink:to="loc_fnf_FGSegmentMember_adbe73ae-c899-4e22-97c5-f0bbcec07c9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CorporateAndReconcilingItemsMember_02a8a5f3-c5b3-4511-9a96-e246ec7a21f5" xlink:href="fnf-20201231.xsd#fnf_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_943631d6-12bf-4e7b-9776-1652784c9d89" xlink:to="loc_fnf_CorporateAndReconcilingItemsMember_02a8a5f3-c5b3-4511-9a96-e246ec7a21f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_c011f590-168a-433b-8aad-6917e7d2e71d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ccf2464f-c0f4-4b40-a1ef-8d6b45bcc9cc" xlink:to="loc_srt_ProductOrServiceAxis_c011f590-168a-433b-8aad-6917e7d2e71d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_c011f590-168a-433b-8aad-6917e7d2e71d_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_c011f590-168a-433b-8aad-6917e7d2e71d" xlink:to="loc_srt_ProductsAndServicesDomain_c011f590-168a-433b-8aad-6917e7d2e71d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_c011f590-168a-433b-8aad-6917e7d2e71d" xlink:to="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsDirectTitleInsurancePremiumsMember_4eb9cfbb-a0b7-45cd-9fd7-6d7393458593" xlink:href="fnf-20201231.xsd#fnf_InsuranceContractsDirectTitleInsurancePremiumsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_InsuranceContractsDirectTitleInsurancePremiumsMember_4eb9cfbb-a0b7-45cd-9fd7-6d7393458593" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsAgencyTitleInsurancePremiumsMember_3008c136-bed3-437e-b9ef-a4344f883a5d" xlink:href="fnf-20201231.xsd#fnf_InsuranceContractsAgencyTitleInsurancePremiumsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_InsuranceContractsAgencyTitleInsurancePremiumsMember_3008c136-bed3-437e-b9ef-a4344f883a5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LifeInsurancePremiumsInsuranceAndInvestmentProductFeesOtherMember_c84e71b6-5cf5-4d0b-a921-799a77b7064c" xlink:href="fnf-20201231.xsd#fnf_LifeInsurancePremiumsInsuranceAndInvestmentProductFeesOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_LifeInsurancePremiumsInsuranceAndInvestmentProductFeesOtherMember_c84e71b6-5cf5-4d0b-a921-799a77b7064c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsHomeWarrantyMember_97da06ec-60bc-42c1-b4cb-00d7e79b9f57" xlink:href="fnf-20201231.xsd#fnf_InsuranceContractsHomeWarrantyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_InsuranceContractsHomeWarrantyMember_97da06ec-60bc-42c1-b4cb-00d7e79b9f57" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsMember_1d46b4d8-d4bb-4353-8047-2a781092e759" xlink:href="fnf-20201231.xsd#fnf_InsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_InsuranceContractsMember_1d46b4d8-d4bb-4353-8047-2a781092e759" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EscrowFeesMember_b8d96aff-139e-4246-ac0f-867036e235d9" xlink:href="fnf-20201231.xsd#fnf_EscrowFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_EscrowFeesMember_b8d96aff-139e-4246-ac0f-867036e235d9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherTitleRelatedFeesAndIncomeMember_2a7ef42a-dc2b-4609-82a0-76db9f2787f4" xlink:href="fnf-20201231.xsd#fnf_OtherTitleRelatedFeesAndIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_OtherTitleRelatedFeesAndIncomeMember_2a7ef42a-dc2b-4609-82a0-76db9f2787f4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ServiceLinkExcludingTitlePremiumsEscrowFeesAndSubservicingFeesMember_66132942-6f21-403c-bfec-145588841746" xlink:href="fnf-20201231.xsd#fnf_ServiceLinkExcludingTitlePremiumsEscrowFeesAndSubservicingFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_ServiceLinkExcludingTitlePremiumsEscrowFeesAndSubservicingFeesMember_66132942-6f21-403c-bfec-145588841746" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RealEstateTechnologyMember_cefbe898-5180-493d-9639-686c9de5db46" xlink:href="fnf-20201231.xsd#fnf_RealEstateTechnologyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_RealEstateTechnologyMember_cefbe898-5180-493d-9639-686c9de5db46" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ReatEstateBrokerageMember_f6c7fb53-2a6c-4eca-9e9b-7895573d8a83" xlink:href="fnf-20201231.xsd#fnf_ReatEstateBrokerageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_ReatEstateBrokerageMember_f6c7fb53-2a6c-4eca-9e9b-7895573d8a83" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherProductsAndServicesMember_43aa21a5-a56f-4cd4-93f2-ac585935a1d7" xlink:href="fnf-20201231.xsd#fnf_OtherProductsAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9bbe8615-6654-4b9e-aa58-8922404d2a20" xlink:to="loc_fnf_OtherProductsAndServicesMember_43aa21a5-a56f-4cd4-93f2-ac585935a1d7" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognitionContractBalancesInformationaboutReceivablesandDeferredRevenueDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#RevenueRecognitionContractBalancesInformationaboutReceivablesandDeferredRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognitionContractBalancesInformationaboutReceivablesandDeferredRevenueDetails" xlink:type="extended" id="idebf60a5219d4cec884db4b5adef1592_RevenueRecognitionContractBalancesInformationaboutReceivablesandDeferredRevenueDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/Intangibles" xlink:type="simple" xlink:href="fnf-20201231.xsd#Intangibles"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Intangibles" xlink:type="extended" id="idd6cf39e95c4463faca1af0799831d9d_Intangibles"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#IntangiblesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesTables" xlink:type="extended" id="i6132cdeec2754387989552a1f7107fe3_IntangiblesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail" xlink:type="simple" xlink:href="fnf-20201231.xsd#IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail" xlink:type="extended" id="i02e8f42ed755409f9f11454076e4c35b_IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f70f95bb-e803-491c-aa88-48cf176fe8c8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f70f95bb-e803-491c-aa88-48cf176fe8c8" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired_01875f49-a26e-4954-af51-575b9d8f7736" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired_01875f49-a26e-4954-af51-575b9d8f7736" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfitsAcquisitionAddition_b9aa5b30-2bb0-49ba-98dd-8b4ebd6873af" xlink:href="fnf-20201231.xsd#fnf_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfitsAcquisitionAddition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfitsAcquisitionAddition_b9aa5b30-2bb0-49ba-98dd-8b4ebd6873af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions_49cdcf59-5968-4cf1-a043-3662b77dbfaa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions_49cdcf59-5968-4cf1-a043-3662b77dbfaa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1_698631ed-c67e-479b-883c-b84d9712e6c3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1_698631ed-c67e-479b-883c-b84d9712e6c3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureInsuranceProfitsPeriodicAmortization_0b3adefb-a2dc-4b94-b70d-23d44cc66550" xlink:href="fnf-20201231.xsd#fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureInsuranceProfitsPeriodicAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureInsuranceProfitsPeriodicAmortization_0b3adefb-a2dc-4b94-b70d-23d44cc66550" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnlockingAdjustment_5e9fed9b-5d61-4ca0-9257-93b9ee93550e" xlink:href="fnf-20201231.xsd#fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnlockingAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnlockingAdjustment_5e9fed9b-5d61-4ca0-9257-93b9ee93550e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnrealizedInvestmentGainLoss_fb613ff1-8cf3-467c-abef-edd72b23c494" xlink:href="fnf-20201231.xsd#fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnrealizedInvestmentGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_9c7ab50b-6392-4a3a-af83-b26949eb0f06" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnrealizedInvestmentGainLoss_fb613ff1-8cf3-467c-abef-edd72b23c494" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired_6caa07f5-2ac5-4cf7-b6a1-5eca8c13388f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_80a9091c-6db2-48a0-9af6-158ae7e51ff6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f70f95bb-e803-491c-aa88-48cf176fe8c8" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_80a9091c-6db2-48a0-9af6-158ae7e51ff6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e6a2db79-7e96-4824-ae5c-5d3fe139f4a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_80a9091c-6db2-48a0-9af6-158ae7e51ff6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e6a2db79-7e96-4824-ae5c-5d3fe139f4a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e6a2db79-7e96-4824-ae5c-5d3fe139f4a9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e6a2db79-7e96-4824-ae5c-5d3fe139f4a9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e6a2db79-7e96-4824-ae5c-5d3fe139f4a9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_99626ff5-243a-411c-8619-779d7b43a6e5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_e6a2db79-7e96-4824-ae5c-5d3fe139f4a9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_99626ff5-243a-411c-8619-779d7b43a6e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_VobaMember_acd52208-41e4-4d79-8b10-40c9134c08bb" xlink:href="fnf-20201231.xsd#fnf_VobaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_99626ff5-243a-411c-8619-779d7b43a6e5" xlink:to="loc_fnf_VobaMember_acd52208-41e4-4d79-8b10-40c9134c08bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DacMember_b5a09f9f-56dc-4c24-b974-202c6e71b5af" xlink:href="fnf-20201231.xsd#fnf_DacMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_99626ff5-243a-411c-8619-779d7b43a6e5" xlink:to="loc_fnf_DacMember_b5a09f9f-56dc-4c24-b974-202c6e71b5af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DSIMember_502a8660-8eec-4980-8d77-ac8218d21116" xlink:href="fnf-20201231.xsd#fnf_DSIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_99626ff5-243a-411c-8619-779d7b43a6e5" xlink:to="loc_fnf_DSIMember_502a8660-8eec-4980-8d77-ac8218d21116" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesNarrativeDetail" xlink:type="simple" xlink:href="fnf-20201231.xsd#IntangiblesNarrativeDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesNarrativeDetail" xlink:type="extended" id="ic6b926795cc746109ac1bed8e1bfa907_IntangiblesNarrativeDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ValueofBusinessAcquiredAssumptionInterestRatetoCalculateAccretiononIntangibleAsset_560c9b50-02b4-4fbe-b0b0-96ef5075505d" xlink:href="fnf-20201231.xsd#fnf_ValueofBusinessAcquiredAssumptionInterestRatetoCalculateAccretiononIntangibleAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_ValueofBusinessAcquiredAssumptionInterestRatetoCalculateAccretiononIntangibleAsset_560c9b50-02b4-4fbe-b0b0-96ef5075505d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PresentValueOfFutureInsuranceProfitsUnrealizedGainLossOnInvestment_6b0d2316-caf4-4298-8a17-21054b266f82" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PresentValueOfFutureInsuranceProfitsUnrealizedGainLossOnInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_PresentValueOfFutureInsuranceProfitsUnrealizedGainLossOnInvestment_6b0d2316-caf4-4298-8a17-21054b266f82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CumulativeAdjustmentsForNetUnrealizedInvestmentGains_9c1aa763-696f-412d-9a32-3efe323ed8d0" xlink:href="fnf-20201231.xsd#fnf_CumulativeAdjustmentsForNetUnrealizedInvestmentGains"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_CumulativeAdjustmentsForNetUnrealizedInvestmentGains_9c1aa763-696f-412d-9a32-3efe323ed8d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredSalesInducementCostUnrealizedGainLossOnInvestment_8c168c18-fef1-47bb-ac14-c35fd78f8c77" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredSalesInducementCostUnrealizedGainLossOnInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_DeferredSalesInducementCostUnrealizedGainLossOnInvestment_8c168c18-fef1-47bb-ac14-c35fd78f8c77" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueNet_0f5491fe-c61c-4cab-b1c1-9dba7ace11c3" xlink:href="fnf-20201231.xsd#fnf_UnearnedRevenueNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_UnearnedRevenueNet_0f5491fe-c61c-4cab-b1c1-9dba7ace11c3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueAdditions_4814fca8-e888-444b-af7b-82a21194c5b2" xlink:href="fnf-20201231.xsd#fnf_UnearnedRevenueAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_UnearnedRevenueAdditions_4814fca8-e888-444b-af7b-82a21194c5b2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueAmortizationExpense_09cd2166-0ef8-451a-b28b-489b35ae9208" xlink:href="fnf-20201231.xsd#fnf_UnearnedRevenueAmortizationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_UnearnedRevenueAmortizationExpense_09cd2166-0ef8-451a-b28b-489b35ae9208" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueInterestExpense_291c1f17-66c6-46d8-bbbd-4bf46919b6a0" xlink:href="fnf-20201231.xsd#fnf_UnearnedRevenueInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_UnearnedRevenueInterestExpense_291c1f17-66c6-46d8-bbbd-4bf46919b6a0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueUnlockingAdjustment_72364806-1f6d-43e5-992e-1df7f12dc828" xlink:href="fnf-20201231.xsd#fnf_UnearnedRevenueUnlockingAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_UnearnedRevenueUnlockingAdjustment_72364806-1f6d-43e5-992e-1df7f12dc828" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueUnrealizedGainLossonInvestment_f9bd1959-170f-4b74-9d46-1c36cc9c442e" xlink:href="fnf-20201231.xsd#fnf_UnearnedRevenueUnrealizedGainLossonInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_fnf_UnearnedRevenueUnrealizedGainLossonInvestment_f9bd1959-170f-4b74-9d46-1c36cc9c442e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_6b1d43b9-ba95-4c6a-ba92-2943cac69d57" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_6b1d43b9-ba95-4c6a-ba92-2943cac69d57" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_f303618b-8cd3-4002-a3e0-dfa4dbd3a60e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_f303618b-8cd3-4002-a3e0-dfa4dbd3a60e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_fbda7f51-8f70-4a34-a18f-20be145d48ab" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_fbda7f51-8f70-4a34-a18f-20be145d48ab" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_c849bd00-6b87-447a-97aa-def6e72c98dd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_c849bd00-6b87-447a-97aa-def6e72c98dd" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_195c3dcc-31c3-4c4c-b37a-6f14f1617919" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_195c3dcc-31c3-4c4c-b37a-6f14f1617919" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_cba59c00-4800-4393-bcf6-90c5ece38b2b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_cba59c00-4800-4393-bcf6-90c5ece38b2b" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_0c4c997d-7b37-484b-b359-675a54a80de5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_08ab68d3-0730-4bbe-8a24-50d129894345" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_0c4c997d-7b37-484b-b359-675a54a80de5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_68001dd9-3285-44d8-95f0-dff75ec65e08" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_0c4c997d-7b37-484b-b359-675a54a80de5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_68001dd9-3285-44d8-95f0-dff75ec65e08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_68001dd9-3285-44d8-95f0-dff75ec65e08_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_68001dd9-3285-44d8-95f0-dff75ec65e08" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_68001dd9-3285-44d8-95f0-dff75ec65e08_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_68fc462e-6773-4382-9712-0a9ca0c5e127" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_68001dd9-3285-44d8-95f0-dff75ec65e08" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_68fc462e-6773-4382-9712-0a9ca0c5e127" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_VobaMember_de434c94-3c59-4194-b4ad-a530843c4b5c" xlink:href="fnf-20201231.xsd#fnf_VobaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_68fc462e-6773-4382-9712-0a9ca0c5e127" xlink:to="loc_fnf_VobaMember_de434c94-3c59-4194-b4ad-a530843c4b5c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DacMember_974dd24a-a3f8-471d-a758-156f4b068255" xlink:href="fnf-20201231.xsd#fnf_DacMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_68fc462e-6773-4382-9712-0a9ca0c5e127" xlink:to="loc_fnf_DacMember_974dd24a-a3f8-471d-a758-156f4b068255" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_6c098ab8-86f6-49c0-a50f-36e22fc84afb" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_0c4c997d-7b37-484b-b359-675a54a80de5" xlink:to="loc_srt_RangeAxis_6c098ab8-86f6-49c0-a50f-36e22fc84afb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6c098ab8-86f6-49c0-a50f-36e22fc84afb_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_6c098ab8-86f6-49c0-a50f-36e22fc84afb" xlink:to="loc_srt_RangeMember_6c098ab8-86f6-49c0-a50f-36e22fc84afb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_69c8d909-5b6a-4e1c-b22c-b1bfa8f4f842" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_6c098ab8-86f6-49c0-a50f-36e22fc84afb" xlink:to="loc_srt_RangeMember_69c8d909-5b6a-4e1c-b22c-b1bfa8f4f842" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_2ddfd310-1c76-46b8-bf23-78c4e5dd5315" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_69c8d909-5b6a-4e1c-b22c-b1bfa8f4f842" xlink:to="loc_srt_MinimumMember_2ddfd310-1c76-46b8-bf23-78c4e5dd5315" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7ce6cf08-bce7-42be-924f-0212dfe0da30" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_69c8d909-5b6a-4e1c-b22c-b1bfa8f4f842" xlink:to="loc_srt_MaximumMember_7ce6cf08-bce7-42be-924f-0212dfe0da30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_48f4cbf5-0312-4c0a-9bdb-bcde27a5e9d1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_0c4c997d-7b37-484b-b359-675a54a80de5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_48f4cbf5-0312-4c0a-9bdb-bcde27a5e9d1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_48f4cbf5-0312-4c0a-9bdb-bcde27a5e9d1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_48f4cbf5-0312-4c0a-9bdb-bcde27a5e9d1" xlink:to="loc_us-gaap_SegmentDomain_48f4cbf5-0312-4c0a-9bdb-bcde27a5e9d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_2cbebadc-9140-4b87-adb9-82bb3f35d524" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_48f4cbf5-0312-4c0a-9bdb-bcde27a5e9d1" xlink:to="loc_us-gaap_SegmentDomain_2cbebadc-9140-4b87-adb9-82bb3f35d524" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGSegmentMember_d593e3cf-1410-43e8-b0b3-0e565110ed61" xlink:href="fnf-20201231.xsd#fnf_FGSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_2cbebadc-9140-4b87-adb9-82bb3f35d524" xlink:to="loc_fnf_FGSegmentMember_d593e3cf-1410-43e8-b0b3-0e565110ed61" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail" xlink:type="simple" xlink:href="fnf-20201231.xsd#IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail" xlink:type="extended" id="i948c90def5744a4eaeb28d46efc60dbb_IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails" xlink:type="extended" id="id8bb2010eea94eaa8da2a981d299d597_IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_2555a60b-cffe-4718-a4a0-0a1824635872" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_2555a60b-cffe-4718-a4a0-0a1824635872" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_6f5e1533-a2fa-4083-b725-d53fbf509614" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_6f5e1533-a2fa-4083-b725-d53fbf509614" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_69690dc2-9e20-4e82-9bad-f70dfdd07f6d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_69690dc2-9e20-4e82-9bad-f70dfdd07f6d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_89e44803-eabe-4736-8e6c-b3cc4d336490" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_89e44803-eabe-4736-8e6c-b3cc4d336490" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_ae6ba6d8-9d72-4056-98cb-492d99f2a319" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_ae6ba6d8-9d72-4056-98cb-492d99f2a319" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_710c68b6-1090-4faf-9b0b-6b363a1aa737" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_710c68b6-1090-4faf-9b0b-6b363a1aa737" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b96b0a98-ec2f-429d-acf5-51e4a39b19a8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_5ab9ad83-1ebf-4d12-9ea5-4dce51eb63a1" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b96b0a98-ec2f-429d-acf5-51e4a39b19a8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_c06cece7-4367-4343-a92e-8b4274fd43d1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b96b0a98-ec2f-429d-acf5-51e4a39b19a8" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_c06cece7-4367-4343-a92e-8b4274fd43d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c06cece7-4367-4343-a92e-8b4274fd43d1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_c06cece7-4367-4343-a92e-8b4274fd43d1" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c06cece7-4367-4343-a92e-8b4274fd43d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6d889585-6759-49c2-ad8b-7d3ad96ac446" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_c06cece7-4367-4343-a92e-8b4274fd43d1" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6d889585-6759-49c2-ad8b-7d3ad96ac446" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FglMember_983af1a2-ebcc-4516-8282-02ffa7d0e288" xlink:href="fnf-20201231.xsd#fnf_FglMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6d889585-6759-49c2-ad8b-7d3ad96ac446" xlink:to="loc_fnf_FglMember_983af1a2-ebcc-4516-8282-02ffa7d0e288" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_fa8c9af1-8a5c-4dac-993c-31cf05f3e8c3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b96b0a98-ec2f-429d-acf5-51e4a39b19a8" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_fa8c9af1-8a5c-4dac-993c-31cf05f3e8c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fa8c9af1-8a5c-4dac-993c-31cf05f3e8c3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_fa8c9af1-8a5c-4dac-993c-31cf05f3e8c3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_fa8c9af1-8a5c-4dac-993c-31cf05f3e8c3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ad66860-fb8a-4ac1-9d1c-25f9f51d3f5b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_fa8c9af1-8a5c-4dac-993c-31cf05f3e8c3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ad66860-fb8a-4ac1-9d1c-25f9f51d3f5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CustomerRelationshipsAndContractsMember_fbbaf8fa-9c79-44d6-95bf-8c899835e5d4" xlink:href="fnf-20201231.xsd#fnf_CustomerRelationshipsAndContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ad66860-fb8a-4ac1-9d1c-25f9f51d3f5b" xlink:to="loc_fnf_CustomerRelationshipsAndContractsMember_fbbaf8fa-9c79-44d6-95bf-8c899835e5d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_a109187c-39bc-4e50-a982-d5b5681a419b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ad66860-fb8a-4ac1-9d1c-25f9f51d3f5b" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_a109187c-39bc-4e50-a982-d5b5681a419b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ValueOfDistributionAssetMember_32e0f363-3d74-49ed-aa78-5252b47676b4" xlink:href="fnf-20201231.xsd#fnf_ValueOfDistributionAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ad66860-fb8a-4ac1-9d1c-25f9f51d3f5b" xlink:to="loc_fnf_ValueOfDistributionAssetMember_32e0f363-3d74-49ed-aa78-5252b47676b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_cb182357-95b6-47cf-a279-73af2c1eec62" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5ad66860-fb8a-4ac1-9d1c-25f9f51d3f5b" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_cb182357-95b6-47cf-a279-73af2c1eec62" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_1d4c80e4-bbf8-42c9-8ec9-22a07b6a8514" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b96b0a98-ec2f-429d-acf5-51e4a39b19a8" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_1d4c80e4-bbf8-42c9-8ec9-22a07b6a8514" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_1d4c80e4-bbf8-42c9-8ec9-22a07b6a8514_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_1d4c80e4-bbf8-42c9-8ec9-22a07b6a8514" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_1d4c80e4-bbf8-42c9-8ec9-22a07b6a8514_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_11f27dee-71d8-444b-93af-db9c14a3046a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_1d4c80e4-bbf8-42c9-8ec9-22a07b6a8514" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_11f27dee-71d8-444b-93af-db9c14a3046a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_c2e3424b-097f-4714-9a0f-a181d578af1a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_11f27dee-71d8-444b-93af-db9c14a3046a" xlink:to="loc_us-gaap_LicensingAgreementsMember_c2e3424b-097f-4714-9a0f-a181d578af1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e0eb1292-c56d-4c92-a2d8-3f564829ffb1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b96b0a98-ec2f-429d-acf5-51e4a39b19a8" xlink:to="loc_srt_RangeAxis_e0eb1292-c56d-4c92-a2d8-3f564829ffb1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e0eb1292-c56d-4c92-a2d8-3f564829ffb1_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e0eb1292-c56d-4c92-a2d8-3f564829ffb1" xlink:to="loc_srt_RangeMember_e0eb1292-c56d-4c92-a2d8-3f564829ffb1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9df83c7a-480f-4de9-bb9f-a5607deb5509" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e0eb1292-c56d-4c92-a2d8-3f564829ffb1" xlink:to="loc_srt_RangeMember_9df83c7a-480f-4de9-bb9f-a5607deb5509" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_43487dc2-1c4f-41e6-9338-aedeb85064c1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9df83c7a-480f-4de9-bb9f-a5607deb5509" xlink:to="loc_srt_MinimumMember_43487dc2-1c4f-41e6-9338-aedeb85064c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_f2c442a9-29f1-45a3-9a03-0a7751ce3650" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9df83c7a-480f-4de9-bb9f-a5607deb5509" xlink:to="loc_srt_MaximumMember_f2c442a9-29f1-45a3-9a03-0a7751ce3650" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Goodwill" xlink:type="simple" xlink:href="fnf-20201231.xsd#Goodwill"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Goodwill" xlink:type="extended" id="i11a2be48c94f4782a816dff767015ea4_Goodwill"/>
  <link:roleRef roleURI="http://www.fnf.com/role/GoodwillTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#GoodwillTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/GoodwillTables" xlink:type="extended" id="iee531b479e9e400a8639ebdc02241a0a_GoodwillTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/GoodwillDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#GoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/GoodwillDetails" xlink:type="extended" id="ifaa6fbb79d9c4c5da7310c0b4c02a535_GoodwillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_6915beac-845a-4e78-8641-04c2a3fedce4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_5924d197-2af2-4182-86d6-eaa9afd1ca25" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_6915beac-845a-4e78-8641-04c2a3fedce4" xlink:to="loc_us-gaap_GoodwillRollForward_5924d197-2af2-4182-86d6-eaa9afd1ca25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_2717575f-9fa7-4da5-b9ff-a1828a673fde" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_5924d197-2af2-4182-86d6-eaa9afd1ca25" xlink:to="loc_us-gaap_Goodwill_2717575f-9fa7-4da5-b9ff-a1828a673fde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_207580af-7e26-402a-8ae1-c3733155302b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_5924d197-2af2-4182-86d6-eaa9afd1ca25" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_207580af-7e26-402a-8ae1-c3733155302b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_640a8df9-6757-4753-9f7e-6b8dd18ea45d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_5924d197-2af2-4182-86d6-eaa9afd1ca25" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_640a8df9-6757-4753-9f7e-6b8dd18ea45d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d6536a93-6def-4877-bc13-57b098ebf6cf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_ac72254b-5f4c-4952-9224-80b36a5106a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_6915beac-845a-4e78-8641-04c2a3fedce4" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_ac72254b-5f4c-4952-9224-80b36a5106a7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsAxis_c4cf5175-57a6-4fc7-8908-d6f5957688e5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_ac72254b-5f4c-4952-9224-80b36a5106a7" xlink:to="loc_us-gaap_SubsegmentsAxis_c4cf5175-57a6-4fc7-8908-d6f5957688e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_c4cf5175-57a6-4fc7-8908-d6f5957688e5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsegmentsAxis_c4cf5175-57a6-4fc7-8908-d6f5957688e5" xlink:to="loc_us-gaap_SubsegmentsDomain_c4cf5175-57a6-4fc7-8908-d6f5957688e5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_bfe1d72d-2d50-4036-ad8b-aeae022caa02" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsegmentsAxis_c4cf5175-57a6-4fc7-8908-d6f5957688e5" xlink:to="loc_us-gaap_SubsegmentsDomain_bfe1d72d-2d50-4036-ad8b-aeae022caa02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_ca9d5380-de2d-479a-bba8-4e849127af49" xlink:href="fnf-20201231.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_bfe1d72d-2d50-4036-ad8b-aeae022caa02" xlink:to="loc_fnf_TitleSegmentMember_ca9d5380-de2d-479a-bba8-4e849127af49" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_700c2d26-d741-4fdf-a248-783476605014" xlink:href="fnf-20201231.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_bfe1d72d-2d50-4036-ad8b-aeae022caa02" xlink:to="loc_fnf_FGMember_700c2d26-d741-4fdf-a248-783476605014" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FidelityNationalFinancialCoreCorporateandOtherSubsegmentMember_7550440e-b332-4236-a456-f4e62a273c77" xlink:href="fnf-20201231.xsd#fnf_FidelityNationalFinancialCoreCorporateandOtherSubsegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_bfe1d72d-2d50-4036-ad8b-aeae022caa02" xlink:to="loc_fnf_FidelityNationalFinancialCoreCorporateandOtherSubsegmentMember_7550440e-b332-4236-a456-f4e62a273c77" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_f1328340-8fd3-45a6-a07a-ed8b8ff0ade1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_ac72254b-5f4c-4952-9224-80b36a5106a7" xlink:to="loc_srt_ConsolidationItemsAxis_f1328340-8fd3-45a6-a07a-ed8b8ff0ade1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_f1328340-8fd3-45a6-a07a-ed8b8ff0ade1_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_f1328340-8fd3-45a6-a07a-ed8b8ff0ade1" xlink:to="loc_srt_ConsolidationItemsDomain_f1328340-8fd3-45a6-a07a-ed8b8ff0ade1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_78187159-be0d-4d90-b4b4-bff6c2961372" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_f1328340-8fd3-45a6-a07a-ed8b8ff0ade1" xlink:to="loc_srt_ConsolidationItemsDomain_78187159-be0d-4d90-b4b4-bff6c2961372" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_85656245-bee0-4820-b224-7cf28363056d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_78187159-be0d-4d90-b4b4-bff6c2961372" xlink:to="loc_us-gaap_OperatingSegmentsMember_85656245-bee0-4820-b224-7cf28363056d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DiscontinuedOperations" xlink:type="simple" xlink:href="fnf-20201231.xsd#DiscontinuedOperations"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DiscontinuedOperations" xlink:type="extended" id="ie9c07fd78676423ea0573f54eeb30638_DiscontinuedOperations"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsurance" xlink:type="simple" xlink:href="fnf-20201231.xsd#FGReinsurance"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsurance" xlink:type="extended" id="i7c9b4a3d3c1a4877abd965f3e9ebc58d_FGReinsurance"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsuranceTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#FGReinsuranceTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsuranceTables" xlink:type="extended" id="ie8bb040853fd4c6f8cae459d0eb8430a_FGReinsuranceTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail" xlink:type="simple" xlink:href="fnf-20201231.xsd#FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail" xlink:type="extended" id="i5b77097abebc40c19a4bd6bf77889960_FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectsOfReinsuranceLineItems_c31f2e9b-502a-4270-a782-2ceb1ac458f5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EffectsOfReinsuranceLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_f8a6f6a4-634f-4a27-baa5-c7333431a7d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectsOfReinsuranceLineItems_c31f2e9b-502a-4270-a782-2ceb1ac458f5" xlink:to="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_f8a6f6a4-634f-4a27-baa5-c7333431a7d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectPremiumsEarned_e4c6015c-2148-4d6f-8f2a-ef47302cd12f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DirectPremiumsEarned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_f8a6f6a4-634f-4a27-baa5-c7333431a7d8" xlink:to="loc_us-gaap_DirectPremiumsEarned_e4c6015c-2148-4d6f-8f2a-ef47302cd12f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumedPremiumsEarned_37e59dfb-f0e2-4362-90c3-668ee337b719" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssumedPremiumsEarned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_f8a6f6a4-634f-4a27-baa5-c7333431a7d8" xlink:to="loc_us-gaap_AssumedPremiumsEarned_37e59dfb-f0e2-4362-90c3-668ee337b719" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededPremiumsEarned_79da8d5f-98d5-473f-87d3-b114f7ceb86e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededPremiumsEarned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_f8a6f6a4-634f-4a27-baa5-c7333431a7d8" xlink:to="loc_us-gaap_CededPremiumsEarned_79da8d5f-98d5-473f-87d3-b114f7ceb86e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PremiumsEarnedNet_1b48eb4f-c00b-4a25-a1cf-924a1e485e97" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PremiumsEarnedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_f8a6f6a4-634f-4a27-baa5-c7333431a7d8" xlink:to="loc_us-gaap_PremiumsEarnedNet_1b48eb4f-c00b-4a25-a1cf-924a1e485e97" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_e98e3c02-43c6-4f13-a861-f9164aa194b6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectsOfReinsuranceLineItems_c31f2e9b-502a-4270-a782-2ceb1ac458f5" xlink:to="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_e98e3c02-43c6-4f13-a861-f9164aa194b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredGross_7274eebd-6448-4cff-a6dc-26184449999b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PolicyholderBenefitsAndClaimsIncurredGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_e98e3c02-43c6-4f13-a861-f9164aa194b6" xlink:to="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredGross_7274eebd-6448-4cff-a6dc-26184449999b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed_de92088b-f3c1-49a3-865f-0d631a47858c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_e98e3c02-43c6-4f13-a861-f9164aa194b6" xlink:to="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed_de92088b-f3c1-49a3-865f-0d631a47858c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded_26129f98-085b-470d-bb7d-b9284c1c1fbb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_e98e3c02-43c6-4f13-a861-f9164aa194b6" xlink:to="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded_26129f98-085b-470d-bb7d-b9284c1c1fbb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_776a2b8f-59d9-4e70-b6a7-f1aa93d0d7e8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PolicyholderBenefitsAndClaimsIncurredNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_e98e3c02-43c6-4f13-a861-f9164aa194b6" xlink:to="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_776a2b8f-59d9-4e70-b6a7-f1aa93d0d7e8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectsOfReinsuranceTable_563c0a61-d4d3-48b6-8f2b-8ebaceb2866b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EffectsOfReinsuranceTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EffectsOfReinsuranceLineItems_c31f2e9b-502a-4270-a782-2ceb1ac458f5" xlink:to="loc_us-gaap_EffectsOfReinsuranceTable_563c0a61-d4d3-48b6-8f2b-8ebaceb2866b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_922b7723-bad2-46e0-9381-18fd159345cd" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_EffectsOfReinsuranceTable_563c0a61-d4d3-48b6-8f2b-8ebaceb2866b" xlink:to="loc_srt_ProductOrServiceAxis_922b7723-bad2-46e0-9381-18fd159345cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_922b7723-bad2-46e0-9381-18fd159345cd_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_922b7723-bad2-46e0-9381-18fd159345cd" xlink:to="loc_srt_ProductsAndServicesDomain_922b7723-bad2-46e0-9381-18fd159345cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_c60be1dd-9e8f-4403-bab0-5c3b0a5b3171" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_922b7723-bad2-46e0-9381-18fd159345cd" xlink:to="loc_srt_ProductsAndServicesDomain_c60be1dd-9e8f-4403-bab0-5c3b0a5b3171" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeInsuranceSegmentMember_34e486f2-df92-4be1-aa25-f95cdf90e0b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LifeInsuranceSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_c60be1dd-9e8f-4403-bab0-5c3b0a5b3171" xlink:to="loc_us-gaap_LifeInsuranceSegmentMember_34e486f2-df92-4be1-aa25-f95cdf90e0b4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsuranceNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#FGReinsuranceNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsuranceNarrativeDetails" xlink:type="extended" id="i4c7cd997ce1a45d99887f191b91a74d0_FGReinsuranceNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededCreditRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceRecoverablesAllowance_7f8c7be9-41c8-40c8-b815-d54e15f86595" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsuranceRecoverablesAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_us-gaap_ReinsuranceRecoverablesAllowance_7f8c7be9-41c8-40c8-b815-d54e15f86595" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ReinsuranceRiskChargeFee_ce5c2e5b-5685-4c8e-82d3-ebe5524fecc0" xlink:href="fnf-20201231.xsd#fnf_ReinsuranceRiskChargeFee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_fnf_ReinsuranceRiskChargeFee_ce5c2e5b-5685-4c8e-82d3-ebe5524fecc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceRetentionPolicyAmountRetained_4fa01c5e-5b51-495b-ab86-6bd695a84830" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsuranceRetentionPolicyAmountRetained"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_us-gaap_ReinsuranceRetentionPolicyAmountRetained_4fa01c5e-5b51-495b-ab86-6bd695a84830" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_5e04a61a-6b9d-4eb0-992f-dcf8c94f5466" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainOnBusinessInterruptionInsuranceRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_5e04a61a-6b9d-4eb0-992f-dcf8c94f5466" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_48ad759c-8311-4e16-a038-5c9b0e9c5585" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_48ad759c-8311-4e16-a038-5c9b0e9c5585" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_d992b42a-a4ab-4916-9b5b-f2ab6f94856b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_d992b42a-a4ab-4916-9b5b-f2ab6f94856b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage_7b8eeaa0-d74b-488f-b71b-834a0676560f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage_7b8eeaa0-d74b-488f-b71b-834a0676560f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ReinsuranceRetrocessionQuotaShareBasisNetPercentage_2f2c8902-e940-4ba1-a644-f9d8ebccbe0b" xlink:href="fnf-20201231.xsd#fnf_ReinsuranceRetrocessionQuotaShareBasisNetPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_fnf_ReinsuranceRetrocessionQuotaShareBasisNetPercentage_2f2c8902-e940-4ba1-a644-f9d8ebccbe0b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ReinsuranceRetrocessionQuotaShareBasisPercentage_e5cb56eb-bca5-4a2a-874e-253bebff3315" xlink:href="fnf-20201231.xsd#fnf_ReinsuranceRetrocessionQuotaShareBasisPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_fnf_ReinsuranceRetrocessionQuotaShareBasisPercentage_e5cb56eb-bca5-4a2a-874e-253bebff3315" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskTable_19a47df5-e13e-4e13-8546-6bd5d372d4db" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededCreditRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CededCreditRiskLineItems_85398e86-8d6a-4bb3-bdd4-ae4927ed6818" xlink:to="loc_us-gaap_CededCreditRiskTable_19a47df5-e13e-4e13-8546-6bd5d372d4db" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_6f00307f-8353-4b65-84ac-cc680f706fed" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_19a47df5-e13e-4e13-8546-6bd5d372d4db" xlink:to="loc_dei_LegalEntityAxis_6f00307f-8353-4b65-84ac-cc680f706fed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6f00307f-8353-4b65-84ac-cc680f706fed_default" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6f00307f-8353-4b65-84ac-cc680f706fed" xlink:to="loc_dei_EntityDomain_6f00307f-8353-4b65-84ac-cc680f706fed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6f00307f-8353-4b65-84ac-cc680f706fed" xlink:to="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HannoverReMember_925ca8d9-5199-4283-8966-a35a1a5e192c" xlink:href="fnf-20201231.xsd#fnf_HannoverReMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_HannoverReMember_925ca8d9-5199-4283-8966-a35a1a5e192c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_KuberaReassuranceCompanyMember_416821b0-6ad4-4e5d-b4c4-e6c5eddfe91b" xlink:href="fnf-20201231.xsd#fnf_KuberaReassuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_KuberaReassuranceCompanyMember_416821b0-6ad4-4e5d-b4c4-e6c5eddfe91b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CanadaLifeAssuranceCompanyUSMember_8f0f13c9-b24d-4691-b10f-2a69ddb54480" xlink:href="fnf-20201231.xsd#fnf_CanadaLifeAssuranceCompanyUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_CanadaLifeAssuranceCompanyUSMember_8f0f13c9-b24d-4691-b10f-2a69ddb54480" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WiltonReassuranceCompanyMember_94d23d5a-18f0-4171-ac0c-5137f4e35cb5" xlink:href="fnf-20201231.xsd#fnf_WiltonReassuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_WiltonReassuranceCompanyMember_94d23d5a-18f0-4171-ac0c-5137f4e35cb5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ScottishReMember_314c1ffd-b642-4abd-9f19-03956a90d2e3" xlink:href="fnf-20201231.xsd#fnf_ScottishReMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_ScottishReMember_314c1ffd-b642-4abd-9f19-03956a90d2e3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PavoniaLifeInsuranceCompanyMember_bf8aa741-2cea-4150-93fd-f2da9a8c9a28" xlink:href="fnf-20201231.xsd#fnf_PavoniaLifeInsuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_PavoniaLifeInsuranceCompanyMember_bf8aa741-2cea-4150-93fd-f2da9a8c9a28" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RavenReinsuranceCompanyMember_8af89748-505a-4606-ad66-1751fbd117aa" xlink:href="fnf-20201231.xsd#fnf_RavenReinsuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_RavenReinsuranceCompanyMember_8af89748-505a-4606-ad66-1751fbd117aa" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FRSCMember_0c80dbe2-15b3-403c-8677-e2268f977ae5" xlink:href="fnf-20201231.xsd#fnf_FRSCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_FRSCMember_0c80dbe2-15b3-403c-8677-e2268f977ae5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGLInsuranceMember_117fdf73-af09-4793-81b7-28dc74ca4516" xlink:href="fnf-20201231.xsd#fnf_FGLInsuranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_FGLInsuranceMember_117fdf73-af09-4793-81b7-28dc74ca4516" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGLifeReLtdMember_ecb9d87e-764e-433f-81cf-3aa311876355" xlink:href="fnf-20201231.xsd#fnf_FGLifeReLtdMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33b26ee1-6f21-4bf4-a426-8c393331c5fb" xlink:to="loc_fnf_FGLifeReLtdMember_ecb9d87e-764e-433f-81cf-3aa311876355" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_f8589a28-5887-4051-9f7d-79cff28da6a6" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_19a47df5-e13e-4e13-8546-6bd5d372d4db" xlink:to="loc_srt_ProductOrServiceAxis_f8589a28-5887-4051-9f7d-79cff28da6a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f8589a28-5887-4051-9f7d-79cff28da6a6_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_f8589a28-5887-4051-9f7d-79cff28da6a6" xlink:to="loc_srt_ProductsAndServicesDomain_f8589a28-5887-4051-9f7d-79cff28da6a6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_53eb6e8a-87d3-48e4-b17a-a8776dcdfaf6" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_f8589a28-5887-4051-9f7d-79cff28da6a6" xlink:to="loc_srt_ProductsAndServicesDomain_53eb6e8a-87d3-48e4-b17a-a8776dcdfaf6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_fdea44d4-409f-483a-a584-9731d3914146" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LifeAndAnnuityInsuranceProductLineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_53eb6e8a-87d3-48e4-b17a-a8776dcdfaf6" xlink:to="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_fdea44d4-409f-483a-a584-9731d3914146" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedIndexAnnuityMember_8da7f7b2-e7fa-4874-abe9-8bca6345cf49" xlink:href="fnf-20201231.xsd#fnf_FixedIndexAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_53eb6e8a-87d3-48e4-b17a-a8776dcdfaf6" xlink:to="loc_fnf_FixedIndexAnnuityMember_8da7f7b2-e7fa-4874-abe9-8bca6345cf49" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/RegulatoryandEquity" xlink:type="simple" xlink:href="fnf-20201231.xsd#RegulatoryandEquity"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RegulatoryandEquity" xlink:type="extended" id="i3c9449ec3d234da496acedb7ea0a6782_RegulatoryandEquity"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RegulatoryandEquityTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#RegulatoryandEquityTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RegulatoryandEquityTables" xlink:type="extended" id="i7bce0b818cf443109002011e413cf9ab_RegulatoryandEquityTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RegulatoryandEquityNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#RegulatoryandEquityNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RegulatoryandEquityNarrativeDetails" xlink:type="extended" id="id93bf8e142824139ba5c808e92caed8e_RegulatoryandEquityNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StatutoryAccountingPracticesPermittedPracticeChangeinStatutoryCapitalandSurplus_ed62e7b0-d8a1-49b1-aa42-d7e82f96a3d0" xlink:href="fnf-20201231.xsd#fnf_StatutoryAccountingPracticesPermittedPracticeChangeinStatutoryCapitalandSurplus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_fnf_StatutoryAccountingPracticesPermittedPracticeChangeinStatutoryCapitalandSurplus_ed62e7b0-d8a1-49b1-aa42-d7e82f96a3d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StatutoryAccountingPracticesCombinedUnearnedPremiumReserveRequired_2fa4fa3b-62e6-4154-805f-85f05a169e5a" xlink:href="fnf-20201231.xsd#fnf_StatutoryAccountingPracticesCombinedUnearnedPremiumReserveRequired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_fnf_StatutoryAccountingPracticesCombinedUnearnedPremiumReserveRequired_2fa4fa3b-62e6-4154-805f-85f05a169e5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesRetainedEarningsNotAvailableForDividends_c400e7f3-a304-4000-b46a-e18656709364" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesRetainedEarningsNotAvailableForDividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_us-gaap_StatutoryAccountingPracticesRetainedEarningsNotAvailableForDividends_c400e7f3-a304-4000-b46a-e18656709364" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval_96b34954-5fee-4cf8-b796-9780fb5b67d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval_96b34954-5fee-4cf8-b796-9780fb5b67d8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_4ea93b06-a3a2-4adb-b63a-d341d36c28d5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_4ea93b06-a3a2-4adb-b63a-d341d36c28d5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount_c7a83291-b39b-4160-a5fd-3081a5784f11" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount_c7a83291-b39b-4160-a5fd-3081a5784f11" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinimumNetWorthRequiredForCompliance_5458d788-77e1-4dd0-ab93-7bc6f2ea4b4d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinimumNetWorthRequiredForCompliance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_us-gaap_MinimumNetWorthRequiredForCompliance_5458d788-77e1-4dd0-ab93-7bc6f2ea4b4d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesDividendsPaidWithApprovalOfRegulatoryAgency_616b5f06-6751-473e-a381-49f349fedbfa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesDividendsPaidWithApprovalOfRegulatoryAgency"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_us-gaap_StatutoryAccountingPracticesDividendsPaidWithApprovalOfRegulatoryAgency_616b5f06-6751-473e-a381-49f349fedbfa" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StatutoryAccountingPracticesStatutoryCapitalandSurplusIncreaseDecreaseasaResultofReDomesticationbyEntity_232b67d3-f7fc-4748-9ffa-40d43df1280d" xlink:href="fnf-20201231.xsd#fnf_StatutoryAccountingPracticesStatutoryCapitalandSurplusIncreaseDecreaseasaResultofReDomesticationbyEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_fnf_StatutoryAccountingPracticesStatutoryCapitalandSurplusIncreaseDecreaseasaResultofReDomesticationbyEntity_232b67d3-f7fc-4748-9ffa-40d43df1280d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StatutoryAccountingPracticesNonPermittedPracticeChangeinStatutoryCapitalandSurplus_961d608c-ef06-4a33-b6e9-2377eef0b454" xlink:href="fnf-20201231.xsd#fnf_StatutoryAccountingPracticesNonPermittedPracticeChangeinStatutoryCapitalandSurplus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_fnf_StatutoryAccountingPracticesNonPermittedPracticeChangeinStatutoryCapitalandSurplus_961d608c-ef06-4a33-b6e9-2377eef0b454" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesTable_b7ae7f14-25b8-49d9-8412-daa025ac8150" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_35526a13-e6c9-4d29-80ef-85cb7cd6dff8" xlink:to="loc_us-gaap_StatutoryAccountingPracticesTable_b7ae7f14-25b8-49d9-8412-daa025ac8150" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_5455ebed-88d6-4cce-a248-656b477188b1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesByJurisdictionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatutoryAccountingPracticesTable_b7ae7f14-25b8-49d9-8412-daa025ac8150" xlink:to="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_5455ebed-88d6-4cce-a248-656b477188b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_5455ebed-88d6-4cce-a248-656b477188b1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesJurisdictionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_5455ebed-88d6-4cce-a248-656b477188b1" xlink:to="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_5455ebed-88d6-4cce-a248-656b477188b1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_f033abbf-da60-411d-b9d0-4b3b8acd4024" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesJurisdictionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_5455ebed-88d6-4cce-a248-656b477188b1" xlink:to="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_f033abbf-da60-411d-b9d0-4b3b8acd4024" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_IA_b864bdb3-a94b-4785-9d73-fb39efcbc3dd" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_IA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_f033abbf-da60-411d-b9d0-4b3b8acd4024" xlink:to="loc_stpr_IA_b864bdb3-a94b-4785-9d73-fb39efcbc3dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_VT_39d3eb8b-007b-46ad-a1d1-b4ef27a6fddc" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_VT"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_f033abbf-da60-411d-b9d0-4b3b8acd4024" xlink:to="loc_stpr_VT_39d3eb8b-007b-46ad-a1d1-b4ef27a6fddc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5644c598-3a19-4eb5-a8bc-0cb024df3dab" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatutoryAccountingPracticesTable_b7ae7f14-25b8-49d9-8412-daa025ac8150" xlink:to="loc_dei_LegalEntityAxis_5644c598-3a19-4eb5-a8bc-0cb024df3dab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5644c598-3a19-4eb5-a8bc-0cb024df3dab_default" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5644c598-3a19-4eb5-a8bc-0cb024df3dab" xlink:to="loc_dei_EntityDomain_5644c598-3a19-4eb5-a8bc-0cb024df3dab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f923a542-cf2a-4e47-89e2-7a83348196cf" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5644c598-3a19-4eb5-a8bc-0cb024df3dab" xlink:to="loc_dei_EntityDomain_f923a542-cf2a-4e47-89e2-7a83348196cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RavenReinsuranceCompanyMember_0783522c-53da-48d2-91ad-47ba54d46f05" xlink:href="fnf-20201231.xsd#fnf_RavenReinsuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f923a542-cf2a-4e47-89e2-7a83348196cf" xlink:to="loc_fnf_RavenReinsuranceCompanyMember_0783522c-53da-48d2-91ad-47ba54d46f05" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_468b10f5-c849-438a-892f-7f82bd615b09" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatutoryAccountingPracticesTable_b7ae7f14-25b8-49d9-8412-daa025ac8150" xlink:to="loc_srt_StatementScenarioAxis_468b10f5-c849-438a-892f-7f82bd615b09" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_468b10f5-c849-438a-892f-7f82bd615b09_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_468b10f5-c849-438a-892f-7f82bd615b09" xlink:to="loc_srt_ScenarioUnspecifiedDomain_468b10f5-c849-438a-892f-7f82bd615b09_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_3cef2992-7587-4a0d-8b49-474ec66f7f4c" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_468b10f5-c849-438a-892f-7f82bd615b09" xlink:to="loc_srt_ScenarioUnspecifiedDomain_3cef2992-7587-4a0d-8b49-474ec66f7f4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_0f5f7a50-4a00-4dab-a8b5-997e5abb6f8a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_3cef2992-7587-4a0d-8b49-474ec66f7f4c" xlink:to="loc_srt_ScenarioForecastMember_0f5f7a50-4a00-4dab-a8b5-997e5abb6f8a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/RegulationandEquityEquityDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#RegulationandEquityEquityDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RegulationandEquityEquityDetails" xlink:type="extended" id="ied132d41c8b749648bc7d602f8a59c08_RegulationandEquityEquityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramPeriodInForce1_ec383aa6-ac88-49eb-a79f-c5a1b6851af2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockRepurchaseProgramPeriodInForce1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:to="loc_us-gaap_StockRepurchaseProgramPeriodInForce1_ec383aa6-ac88-49eb-a79f-c5a1b6851af2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_58806577-5d61-4692-a0fe-8211ec1375fc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:to="loc_us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_58806577-5d61-4692-a0fe-8211ec1375fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TreasuryStockSharesRepurchasePeriod_2247bbad-b2a2-44b0-9d04-88e797aa37f3" xlink:href="fnf-20201231.xsd#fnf_TreasuryStockSharesRepurchasePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:to="loc_fnf_TreasuryStockSharesRepurchasePeriod_2247bbad-b2a2-44b0-9d04-88e797aa37f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_eb426990-c2b8-449f-9619-ac6233d8edf2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_eb426990-c2b8-449f-9619-ac6233d8edf2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_98183233-dc10-4442-ba65-722286509346" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_98183233-dc10-4442-ba65-722286509346" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_4c46bd50-6d7c-4479-a317-ccb9074834b1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:to="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_4c46bd50-6d7c-4479-a317-ccb9074834b1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_75d46f9e-290f-443c-b1dc-5d0738853b4c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_60393ea1-3c23-4eff-9cfd-e5297eeec5e5" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_75d46f9e-290f-443c-b1dc-5d0738853b4c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_f8d584b4-1919-422c-8927-e5a74f8a5f4d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_75d46f9e-290f-443c-b1dc-5d0738853b4c" xlink:to="loc_us-gaap_StatementClassOfStockAxis_f8d584b4-1919-422c-8927-e5a74f8a5f4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_f8d584b4-1919-422c-8927-e5a74f8a5f4d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_f8d584b4-1919-422c-8927-e5a74f8a5f4d" xlink:to="loc_us-gaap_ClassOfStockDomain_f8d584b4-1919-422c-8927-e5a74f8a5f4d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_76096767-6ea3-44bb-b4f8-614dc4833f39" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_f8d584b4-1919-422c-8927-e5a74f8a5f4d" xlink:to="loc_us-gaap_ClassOfStockDomain_76096767-6ea3-44bb-b4f8-614dc4833f39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_a805b1ba-392c-4f98-a5da-81e919e953b4" xlink:href="fnf-20201231.xsd#fnf_FidelityNationalFinancialGroupCommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_76096767-6ea3-44bb-b4f8-614dc4833f39" xlink:to="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_a805b1ba-392c-4f98-a5da-81e919e953b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_e2437df3-2257-4c58-a347-ebc23733216c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_75d46f9e-290f-443c-b1dc-5d0738853b4c" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_e2437df3-2257-4c58-a347-ebc23733216c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_e2437df3-2257-4c58-a347-ebc23733216c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_e2437df3-2257-4c58-a347-ebc23733216c" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_e2437df3-2257-4c58-a347-ebc23733216c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_9d27fe26-4f48-416e-8b34-18afbc6c509c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_e2437df3-2257-4c58-a347-ebc23733216c" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_9d27fe26-4f48-416e-8b34-18afbc6c509c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TwoThousandEighteenRepurchaseProgramMember_5eebc809-4e03-4e36-861c-9403c5af9243" xlink:href="fnf-20201231.xsd#fnf_TwoThousandEighteenRepurchaseProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_9d27fe26-4f48-416e-8b34-18afbc6c509c" xlink:to="loc_fnf_TwoThousandEighteenRepurchaseProgramMember_5eebc809-4e03-4e36-861c-9403c5af9243" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_adda82d2-eec6-42a8-ba53-0d201d375356" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_75d46f9e-290f-443c-b1dc-5d0738853b4c" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_adda82d2-eec6-42a8-ba53-0d201d375356" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_adda82d2-eec6-42a8-ba53-0d201d375356_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_adda82d2-eec6-42a8-ba53-0d201d375356" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_adda82d2-eec6-42a8-ba53-0d201d375356_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_d50b9761-f450-4307-b1c7-7d990a786829" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_adda82d2-eec6-42a8-ba53-0d201d375356" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_d50b9761-f450-4307-b1c7-7d990a786829" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_074e45ce-7993-42c7-84f5-f041b759b2db" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_d50b9761-f450-4307-b1c7-7d990a786829" xlink:to="loc_us-gaap_SubsequentEventMember_074e45ce-7993-42c7-84f5-f041b759b2db" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersStatutoryIncomeandNetCapitalDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersStatutoryIncomeandNetCapitalDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersStatutoryIncomeandNetCapitalDetails" xlink:type="extended" id="i5bc613392068470f84b471287442497e_FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersStatutoryIncomeandNetCapitalDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesLineItems_cab3f3e0-a21f-4e04-a1d2-db748a9e10a4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount_b3107301-9795-4225-9fd3-bc6599757ce0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_cab3f3e0-a21f-4e04-a1d2-db748a9e10a4" xlink:to="loc_us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount_b3107301-9795-4225-9fd3-bc6599757ce0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_7290c07e-6738-4a55-834d-485eee40fe8b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_cab3f3e0-a21f-4e04-a1d2-db748a9e10a4" xlink:to="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_7290c07e-6738-4a55-834d-485eee40fe8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesTable_0c961a6b-434b-4796-9eda-a515dfe8dd71" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_cab3f3e0-a21f-4e04-a1d2-db748a9e10a4" xlink:to="loc_us-gaap_StatutoryAccountingPracticesTable_0c961a6b-434b-4796-9eda-a515dfe8dd71" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_0fca8f1f-cbe0-47f1-afdd-f7489d46b44b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesByJurisdictionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatutoryAccountingPracticesTable_0c961a6b-434b-4796-9eda-a515dfe8dd71" xlink:to="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_0fca8f1f-cbe0-47f1-afdd-f7489d46b44b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_0fca8f1f-cbe0-47f1-afdd-f7489d46b44b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesJurisdictionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_0fca8f1f-cbe0-47f1-afdd-f7489d46b44b" xlink:to="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_0fca8f1f-cbe0-47f1-afdd-f7489d46b44b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_ca7f8401-4bde-40c0-ad5e-73ef3b960494" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatutoryAccountingPracticesJurisdictionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_0fca8f1f-cbe0-47f1-afdd-f7489d46b44b" xlink:to="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_ca7f8401-4bde-40c0-ad5e-73ef3b960494" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_IA_b02258a2-3990-4edf-915f-620f6a602a62" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_IA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_ca7f8401-4bde-40c0-ad5e-73ef3b960494" xlink:to="loc_stpr_IA_b02258a2-3990-4edf-915f-620f6a602a62" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_NY_03615e54-cae1-4cd5-845a-098849e8cf9a" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_ca7f8401-4bde-40c0-ad5e-73ef3b960494" xlink:to="loc_stpr_NY_03615e54-cae1-4cd5-845a-098849e8cf9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_VT_2333326d-ce6d-4989-9a8b-f54cf929cd37" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_VT"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_ca7f8401-4bde-40c0-ad5e-73ef3b960494" xlink:to="loc_stpr_VT_2333326d-ce6d-4989-9a8b-f54cf929cd37" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquity" xlink:type="simple" xlink:href="fnf-20201231.xsd#NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquity"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquity" xlink:type="extended" id="i783e163d2e0641509aea6bba47c53d31_NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquity"/>
  <link:roleRef roleURI="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityTables" xlink:type="extended" id="i6460808f47e5474cb13116d4aa591c6d_NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityEffectofChangeinOwnershipPercentageinServiceLinkDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityEffectofChangeinOwnershipPercentageinServiceLinkDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityEffectofChangeinOwnershipPercentageinServiceLinkDetails" xlink:type="extended" id="ia16d39256f184a38b70598272ef45ad0_NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityEffectofChangeinOwnershipPercentageinServiceLinkDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_d14f584d-c851-40b6-943c-590327a409e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates_b6f41860-19db-47ed-ac48-54381411ffee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_d14f584d-c851-40b6-943c-590327a409e0" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates_b6f41860-19db-47ed-ac48-54381411ffee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_570b97f4-2296-4be1-b378-83eef3882a91" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_d14f584d-c851-40b6-943c-590327a409e0" xlink:to="loc_us-gaap_NetIncomeLoss_570b97f4-2296-4be1-b378-83eef3882a91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest_63a92f06-2249-47e9-8f57-8fb5aa006a17" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_d14f584d-c851-40b6-943c-590327a409e0" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest_63a92f06-2249-47e9-8f57-8fb5aa006a17" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease_0d2ece72-fd68-4f10-9a70-3e609b3575a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_d14f584d-c851-40b6-943c-590327a409e0" xlink:to="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease_0d2ece72-fd68-4f10-9a70-3e609b3575a7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NetIncomeLossAttributableToParentAndChangeInEquity_0ef46a34-65ea-490b-92ef-a6dfdb4f5652" xlink:href="fnf-20201231.xsd#fnf_NetIncomeLossAttributableToParentAndChangeInEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_d14f584d-c851-40b6-943c-590327a409e0" xlink:to="loc_fnf_NetIncomeLossAttributableToParentAndChangeInEquity_0ef46a34-65ea-490b-92ef-a6dfdb4f5652" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_fb06ebe3-1cb0-4d5c-bae3-648ba678ce1c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_d14f584d-c851-40b6-943c-590327a409e0" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_fb06ebe3-1cb0-4d5c-bae3-648ba678ce1c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_7a947eab-ac02-4b41-94d2-9552db6135c2" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fb06ebe3-1cb0-4d5c-bae3-648ba678ce1c" xlink:to="loc_srt_CounterpartyNameAxis_7a947eab-ac02-4b41-94d2-9552db6135c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7a947eab-ac02-4b41-94d2-9552db6135c2_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_7a947eab-ac02-4b41-94d2-9552db6135c2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7a947eab-ac02-4b41-94d2-9552db6135c2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_fad011f1-51c3-4ca9-86e5-59de0194ec50" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_7a947eab-ac02-4b41-94d2-9552db6135c2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_fad011f1-51c3-4ca9-86e5-59de0194ec50" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ServiceLinkHoldingsLLCMember_5d41817c-f768-43bb-9625-b1e685e49c0c" xlink:href="fnf-20201231.xsd#fnf_ServiceLinkHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_fad011f1-51c3-4ca9-86e5-59de0194ec50" xlink:to="loc_fnf_ServiceLinkHoldingsLLCMember_5d41817c-f768-43bb-9625-b1e685e49c0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_e47c5162-5638-40e6-90af-0432f8ae9c86" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fb06ebe3-1cb0-4d5c-bae3-648ba678ce1c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_e47c5162-5638-40e6-90af-0432f8ae9c86" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_e47c5162-5638-40e6-90af-0432f8ae9c86_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_e47c5162-5638-40e6-90af-0432f8ae9c86" xlink:to="loc_us-gaap_EquityComponentDomain_e47c5162-5638-40e6-90af-0432f8ae9c86_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_c12ffcb4-3222-461c-b30a-1488a987025c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_e47c5162-5638-40e6-90af-0432f8ae9c86" xlink:to="loc_us-gaap_EquityComponentDomain_c12ffcb4-3222-461c-b30a-1488a987025c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_a11bc79d-495d-49fa-b7e7-898682518665" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_c12ffcb4-3222-461c-b30a-1488a987025c" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_a11bc79d-495d-49fa-b7e7-898682518665" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_ecba5a9e-e5c8-4c01-a534-40b9df4ec961" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_c12ffcb4-3222-461c-b30a-1488a987025c" xlink:to="loc_us-gaap_NoncontrollingInterestMember_ecba5a9e-e5c8-4c01-a534-40b9df4ec961" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityChangesinRedeemableNoncontrollingInterestDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityChangesinRedeemableNoncontrollingInterestDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityChangesinRedeemableNoncontrollingInterestDetails" xlink:type="extended" id="i39bf811f68534ce88a297c4c84fb7102_NetIncomeAttributabletoFNFCommonShareholdersandChangeinTotalEquityChangesinRedeemableNoncontrollingInterestDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/Leases" xlink:type="simple" xlink:href="fnf-20201231.xsd#Leases"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Leases" xlink:type="extended" id="i9b0b7ebd9d20429d922da6695302ffa9_Leases"/>
  <link:roleRef roleURI="http://www.fnf.com/role/LeasesTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#LeasesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/LeasesTables" xlink:type="extended" id="ida0579d4cf584cc8a09ef4ade2364e79_LeasesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/LeasesNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#LeasesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/LeasesNarrativeDetails" xlink:type="extended" id="i966576b3d81242d48325fb8dac2cc4bc_LeasesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_60c6b3f4-b4a3-42c7-b55c-673ad2810fed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_60c6b3f4-b4a3-42c7-b55c-673ad2810fed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_f88ec8b0-ee09-4f32-976c-9d11e553d9e4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_f88ec8b0-ee09-4f32-976c-9d11e553d9e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LesseeOperatingLeaseNumberOfOptionsToRenew_e9bc8b10-7cc6-4e35-a017-6818b995e2df" xlink:href="fnf-20201231.xsd#fnf_LesseeOperatingLeaseNumberOfOptionsToRenew"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_fnf_LesseeOperatingLeaseNumberOfOptionsToRenew_e9bc8b10-7cc6-4e35-a017-6818b995e2df" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_27cd581f-18a3-44c2-8ae5-44c9e799e39c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_27cd581f-18a3-44c2-8ae5-44c9e799e39c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_6f24de3a-aa3f-4821-beac-77a987415bb5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_6f24de3a-aa3f-4821-beac-77a987415bb5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_76bdd505-685a-4e5c-aba4-98c29267ad87" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_us-gaap_OperatingLeaseCost_76bdd505-685a-4e5c-aba4-98c29267ad87" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesRentExpenseNet_5adf6e77-dab9-40d5-9a1d-b2e9077ceb12" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesRentExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_us-gaap_OperatingLeasesRentExpenseNet_5adf6e77-dab9-40d5-9a1d-b2e9077ceb12" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_0e76f0da-1cb7-4353-b32f-332b4007974a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_50e58f68-51cb-41cc-8848-7189807f45ca" xlink:to="loc_us-gaap_DebtInstrumentTable_0e76f0da-1cb7-4353-b32f-332b4007974a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e4e3a52c-ab77-44c5-9702-297667efa490" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0e76f0da-1cb7-4353-b32f-332b4007974a" xlink:to="loc_srt_RangeAxis_e4e3a52c-ab77-44c5-9702-297667efa490" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e4e3a52c-ab77-44c5-9702-297667efa490_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e4e3a52c-ab77-44c5-9702-297667efa490" xlink:to="loc_srt_RangeMember_e4e3a52c-ab77-44c5-9702-297667efa490_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f0757445-323a-42af-9e97-9370e020f989" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e4e3a52c-ab77-44c5-9702-297667efa490" xlink:to="loc_srt_RangeMember_f0757445-323a-42af-9e97-9370e020f989" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_243557fa-545e-4160-b47d-ff5aaea52258" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f0757445-323a-42af-9e97-9370e020f989" xlink:to="loc_srt_MinimumMember_243557fa-545e-4160-b47d-ff5aaea52258" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_ddcb8092-8b60-466b-b8b0-bf6d8af775ff" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f0757445-323a-42af-9e97-9370e020f989" xlink:to="loc_srt_MaximumMember_ddcb8092-8b60-466b-b8b0-bf6d8af775ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_440400d2-1c83-4747-b3e6-3713b375722c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0e76f0da-1cb7-4353-b32f-332b4007974a" xlink:to="loc_us-gaap_VariableRateAxis_440400d2-1c83-4747-b3e6-3713b375722c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_440400d2-1c83-4747-b3e6-3713b375722c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_440400d2-1c83-4747-b3e6-3713b375722c" xlink:to="loc_us-gaap_VariableRateDomain_440400d2-1c83-4747-b3e6-3713b375722c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_7c3b59c2-3213-41ed-b338-1380ab9de421" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_440400d2-1c83-4747-b3e6-3713b375722c" xlink:to="loc_us-gaap_VariableRateDomain_7c3b59c2-3213-41ed-b338-1380ab9de421" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_2e5893f5-d00d-4df4-aa30-a4327f4a7751" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_7c3b59c2-3213-41ed-b338-1380ab9de421" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_2e5893f5-d00d-4df4-aa30-a4327f4a7751" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_c74f76d7-891a-4528-8f48-e28679770347" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0e76f0da-1cb7-4353-b32f-332b4007974a" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_c74f76d7-891a-4528-8f48-e28679770347" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_c74f76d7-891a-4528-8f48-e28679770347_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c74f76d7-891a-4528-8f48-e28679770347" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_c74f76d7-891a-4528-8f48-e28679770347_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_be9edd36-9f1f-4dd0-9e21-69b77abee4ea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c74f76d7-891a-4528-8f48-e28679770347" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_be9edd36-9f1f-4dd0-9e21-69b77abee4ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_d280f524-f106-4dd7-a409-89fd28d44200" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_be9edd36-9f1f-4dd0-9e21-69b77abee4ea" xlink:to="loc_us-gaap_LineOfCreditMember_d280f524-f106-4dd7-a409-89fd28d44200" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_0a264550-678e-4ff5-a9b5-868bf5077b3c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0e76f0da-1cb7-4353-b32f-332b4007974a" xlink:to="loc_us-gaap_CreditFacilityAxis_0a264550-678e-4ff5-a9b5-868bf5077b3c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_0a264550-678e-4ff5-a9b5-868bf5077b3c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_0a264550-678e-4ff5-a9b5-868bf5077b3c" xlink:to="loc_us-gaap_CreditFacilityDomain_0a264550-678e-4ff5-a9b5-868bf5077b3c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_6403ecd2-12ad-4d4b-815b-6339a8064c16" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_0a264550-678e-4ff5-a9b5-868bf5077b3c" xlink:to="loc_us-gaap_CreditFacilityDomain_6403ecd2-12ad-4d4b-815b-6339a8064c16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_1af181a1-3c1b-4602-8311-cd3ef74bed7c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6403ecd2-12ad-4d4b-815b-6339a8064c16" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_1af181a1-3c1b-4602-8311-cd3ef74bed7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_19d7bb35-65dc-4b58-bd54-436655fcce26" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_0e76f0da-1cb7-4353-b32f-332b4007974a" xlink:to="loc_us-gaap_DebtInstrumentAxis_19d7bb35-65dc-4b58-bd54-436655fcce26" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_19d7bb35-65dc-4b58-bd54-436655fcce26_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_19d7bb35-65dc-4b58-bd54-436655fcce26" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_19d7bb35-65dc-4b58-bd54-436655fcce26_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9e5d1728-083c-4f62-98fa-357593d753b6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_19d7bb35-65dc-4b58-bd54-436655fcce26" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9e5d1728-083c-4f62-98fa-357593d753b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RevolvingCreditFacilityDueApril2022Member_ff5ff1e9-4732-4045-ba68-59a7f5c3c82a" xlink:href="fnf-20201231.xsd#fnf_RevolvingCreditFacilityDueApril2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9e5d1728-083c-4f62-98fa-357593d753b6" xlink:to="loc_fnf_RevolvingCreditFacilityDueApril2022Member_ff5ff1e9-4732-4045-ba68-59a7f5c3c82a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/LeasesFuturePaymentsUnderOperatingLeaseArrangementsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#LeasesFuturePaymentsUnderOperatingLeaseArrangementsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/LeasesFuturePaymentsUnderOperatingLeaseArrangementsDetails" xlink:type="extended" id="if310c594e22341ada715bef9275c49ce_LeasesFuturePaymentsUnderOperatingLeaseArrangementsDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/PropertyandEquipment" xlink:type="simple" xlink:href="fnf-20201231.xsd#PropertyandEquipment"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/PropertyandEquipment" xlink:type="extended" id="i4e216813abb64ef99f56eee494e97bd2_PropertyandEquipment"/>
  <link:roleRef roleURI="http://www.fnf.com/role/PropertyandEquipmentTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#PropertyandEquipmentTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/PropertyandEquipmentTables" xlink:type="extended" id="i6022b6205338427bb3f5df56f87123c9_PropertyandEquipmentTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/PropertyandEquipmentDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#PropertyandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/PropertyandEquipmentDetails" xlink:type="extended" id="i50d7398872f942edaeeb65f3242b2d1d_PropertyandEquipmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_20867533-c092-4dbc-8a95-6fb6f2823e2e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_826d16e1-f8c9-4cb5-91c1-f47ace186adb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_20867533-c092-4dbc-8a95-6fb6f2823e2e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_826d16e1-f8c9-4cb5-91c1-f47ace186adb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_9133506a-a28e-4cc1-9599-4ff9fa19eea8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_20867533-c092-4dbc-8a95-6fb6f2823e2e" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_9133506a-a28e-4cc1-9599-4ff9fa19eea8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_ff4e13a4-2c0d-4df4-b4c4-e91b7fd04844" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_20867533-c092-4dbc-8a95-6fb6f2823e2e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_ff4e13a4-2c0d-4df4-b4c4-e91b7fd04844" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_2a333f8f-7232-45f1-98ca-0db60476a745" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_20867533-c092-4dbc-8a95-6fb6f2823e2e" xlink:to="loc_us-gaap_Depreciation_2a333f8f-7232-45f1-98ca-0db60476a745" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_4ba16d25-6c53-4801-ad11-1d1eae19fe66" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_20867533-c092-4dbc-8a95-6fb6f2823e2e" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_4ba16d25-6c53-4801-ad11-1d1eae19fe66" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3e8c4e5c-a21b-4d84-90df-be8aacb1a215" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_4ba16d25-6c53-4801-ad11-1d1eae19fe66" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3e8c4e5c-a21b-4d84-90df-be8aacb1a215" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_3e8c4e5c-a21b-4d84-90df-be8aacb1a215_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3e8c4e5c-a21b-4d84-90df-be8aacb1a215" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_3e8c4e5c-a21b-4d84-90df-be8aacb1a215_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3e8c4e5c-a21b-4d84-90df-be8aacb1a215" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FurnitureFixturesandEquipmentMember_c3913037-81a6-44e3-a2ae-1fbe42b4a9a0" xlink:href="fnf-20201231.xsd#fnf_FurnitureFixturesandEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:to="loc_fnf_FurnitureFixturesandEquipmentMember_c3913037-81a6-44e3-a2ae-1fbe42b4a9a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyEquipmentMember_438667d9-8173-4e78-813d-595cde572a4d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TechnologyEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:to="loc_us-gaap_TechnologyEquipmentMember_438667d9-8173-4e78-813d-595cde572a4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_27cb8ad9-ee65-43a3-b6ea-f82a6318a51d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_27cb8ad9-ee65-43a3-b6ea-f82a6318a51d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_065821d5-6c9b-4d37-94a7-797e6f157cae" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:to="loc_us-gaap_BuildingMember_065821d5-6c9b-4d37-94a7-797e6f157cae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_041b4ab3-d0dc-4ef8-9c1d-91ea107713c7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:to="loc_us-gaap_LandMember_041b4ab3-d0dc-4ef8-9c1d-91ea107713c7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherMachineryAndEquipmentMember_791f8e58-7940-4ed3-89f2-984cf56add15" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherMachineryAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ec35c8a0-d8cd-499f-bd28-03b5276ffb37" xlink:to="loc_us-gaap_OtherMachineryAndEquipmentMember_791f8e58-7940-4ed3-89f2-984cf56add15" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AccountsPayableandOtherAccruedLiabilities" xlink:type="simple" xlink:href="fnf-20201231.xsd#AccountsPayableandOtherAccruedLiabilities"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AccountsPayableandOtherAccruedLiabilities" xlink:type="extended" id="i39b6d854e12243eb8bd63b6f78f2754f_AccountsPayableandOtherAccruedLiabilities"/>
  <link:roleRef roleURI="http://www.fnf.com/role/AccountsPayableandOtherAccruedLiabilitiesTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#AccountsPayableandOtherAccruedLiabilitiesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AccountsPayableandOtherAccruedLiabilitiesTables" xlink:type="extended" id="i3defa159bf5f4fcd8eb70996c241b5ea_AccountsPayableandOtherAccruedLiabilitiesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/AccountsPayableandOtherAccruedLiabilitiesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#AccountsPayableandOtherAccruedLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AccountsPayableandOtherAccruedLiabilitiesDetails" xlink:type="extended" id="ia8998460cf4747bcaec928b50789f392_AccountsPayableandOtherAccruedLiabilitiesDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxes" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxes"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxes" xlink:type="extended" id="ibbdd9991681448138433e03db8058504_IncomeTaxes"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxesTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxesTables" xlink:type="extended" id="i9d1668a117294ef1aacd3e3754b4446f_IncomeTaxesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxesTaxExpenseonContinuingOperationsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxesTaxExpenseonContinuingOperationsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxesTaxExpenseonContinuingOperationsDetails" xlink:type="extended" id="i63a70ce1b14b460ab728ed900fc2e403_IncomeTaxesTaxExpenseonContinuingOperationsDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxesTaxExpenseBenefitAllocationDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxesTaxExpenseBenefitAllocationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxesTaxExpenseBenefitAllocationDetails" xlink:type="extended" id="i4469f34167bf427798ac950e7f04cebf_IncomeTaxesTaxExpenseBenefitAllocationDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxesEffectiveTaxRateReconciliationDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxesEffectiveTaxRateReconciliationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxesEffectiveTaxRateReconciliationDetails" xlink:type="extended" id="i139a7ea8c9ea4b90bd15710c42a64589_IncomeTaxesEffectiveTaxRateReconciliationDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxesComponentsDeferredTaxAssetandLiabilitiesDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxesComponentsDeferredTaxAssetandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxesComponentsDeferredTaxAssetandLiabilitiesDetails" xlink:type="extended" id="i153eab5050bf4f14a469a9082431fa1f_IncomeTaxesComponentsDeferredTaxAssetandLiabilitiesDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxesNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended" id="i632743305e1f4242bc68361f857c1763_IncomeTaxesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationAllowanceLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_275d85fc-36e0-41b5-9a5a-7696d6c0a1c2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_DeferredTaxLiabilities_275d85fc-36e0-41b5-9a5a-7696d6c0a1c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestments_c53ac544-fc84-40fc-9bfd-321352af3c14" xlink:href="fnf-20201231.xsd#fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestments_c53ac544-fc84-40fc-9bfd-321352af3c14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestmentsUnrealizedGains_8b85205e-1a24-4f57-a676-ea38079b9ea3" xlink:href="fnf-20201231.xsd#fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestmentsUnrealizedGains"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestmentsUnrealizedGains_8b85205e-1a24-4f57-a676-ea38079b9ea3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestmentsOther_635e0458-0ac5-44a0-b9cb-9eb13d6e69d7" xlink:href="fnf-20201231.xsd#fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestmentsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_IncreaseDecreaseInDeferredTaxLiabilitiesInvestmentsOther_635e0458-0ac5-44a0-b9cb-9eb13d6e69d7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncreaseDecreaseinDeferredTaxLiabilitiesPartnerships_3c731f23-3de3-47ea-880a-684e37baa502" xlink:href="fnf-20201231.xsd#fnf_IncreaseDecreaseinDeferredTaxLiabilitiesPartnerships"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_IncreaseDecreaseinDeferredTaxLiabilitiesPartnerships_3c731f23-3de3-47ea-880a-684e37baa502" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredTaxAssetsIncreaseDecreaseTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits_57779a5c-86cf-4124-a0f8-9e9324df0398" xlink:href="fnf-20201231.xsd#fnf_DeferredTaxAssetsIncreaseDecreaseTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_DeferredTaxAssetsIncreaseDecreaseTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits_57779a5c-86cf-4124-a0f8-9e9324df0398" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredTaxAssetInsuranceReservesandClaimRelatedAdjustments_ea98170f-b443-450a-a309-6c82ca0e631d" xlink:href="fnf-20201231.xsd#fnf_DeferredTaxAssetInsuranceReservesandClaimRelatedAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_DeferredTaxAssetInsuranceReservesandClaimRelatedAdjustments_ea98170f-b443-450a-a309-6c82ca0e631d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_93891949-120d-420d-aaee-6018d6cf4db7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsCapitalLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_93891949-120d-420d-aaee-6018d6cf4db7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredTaxAssetFundsHeldUnderReinsuranceAgreement_0bc68bc6-dc63-4e35-9e5c-536321974555" xlink:href="fnf-20201231.xsd#fnf_DeferredTaxAssetFundsHeldUnderReinsuranceAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_DeferredTaxAssetFundsHeldUnderReinsuranceAgreement_0bc68bc6-dc63-4e35-9e5c-536321974555" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredTaxAssetBasisDifferenceHeldForSale_b7c3e50e-07f0-4eef-903b-276c46d226d1" xlink:href="fnf-20201231.xsd#fnf_DeferredTaxAssetBasisDifferenceHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_DeferredTaxAssetBasisDifferenceHeldForSale_b7c3e50e-07f0-4eef-903b-276c46d226d1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredTaxLiabilityValueOfAcquisition_9db521a0-d2bb-4e24-9141-d857c2d1043d" xlink:href="fnf-20201231.xsd#fnf_DeferredTaxLiabilityValueOfAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_DeferredTaxLiabilityValueOfAcquisition_9db521a0-d2bb-4e24-9141-d857c2d1043d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_95b6862c-85ff-456c-a4ac-e6a1e1ab18b5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxLiabilitiesDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_95b6862c-85ff-456c-a4ac-e6a1e1ab18b5" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredTaxLiabilityFundsHeldUnderReinsuranceAgreements_8a25ef8d-623a-4a65-9b7f-f78b947970c7" xlink:href="fnf-20201231.xsd#fnf_DeferredTaxLiabilityFundsHeldUnderReinsuranceAgreements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_DeferredTaxLiabilityFundsHeldUnderReinsuranceAgreements_8a25ef8d-623a-4a65-9b7f-f78b947970c7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredTaxLiabilityInsuranceTransitionReserveOnNewMethod_f81659eb-cd4b-45e6-a193-ac88b625c5fc" xlink:href="fnf-20201231.xsd#fnf_DeferredTaxLiabilityInsuranceTransitionReserveOnNewMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_fnf_DeferredTaxLiabilityInsuranceTransitionReserveOnNewMethod_f81659eb-cd4b-45e6-a193-ac88b625c5fc" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_181d69f2-a17e-48ea-8d6c-b8f31e8d53d2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_OperatingLossCarryforwards_181d69f2-a17e-48ea-8d6c-b8f31e8d53d2" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_b86e3db9-e1be-49c3-8c24-bb045d4e14ee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_b86e3db9-e1be-49c3-8c24-bb045d4e14ee" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_3f57aec2-d99f-4274-80bf-47a0f73eb189" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_3f57aec2-d99f-4274-80bf-47a0f73eb189" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_66f88d52-c4eb-4c71-9205-8e34dc966a23" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_66f88d52-c4eb-4c71-9205-8e34dc966a23" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_3ef08fe2-aae8-43f2-b260-befb3432893c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_3ef08fe2-aae8-43f2-b260-befb3432893c" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_40c6a6f3-7a1d-4792-9eba-f3c7dc631bf0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_40c6a6f3-7a1d-4792-9eba-f3c7dc631bf0" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReceivable_716b81ea-ebdf-4732-971e-46e94e5c6bda" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_IncomeTaxReceivable_716b81ea-ebdf-4732-971e-46e94e5c6bda" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsInvestmentInSubsidiaries_b12e7125-be33-4e7d-9468-d0b55959d592" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsInvestmentInSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_DeferredTaxAssetsInvestmentInSubsidiaries_b12e7125-be33-4e7d-9468-d0b55959d592" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceTable_eb01aa5d-45d3-4fe3-9e58-d25922f7fa70" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationAllowanceTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_d9af9aef-a66e-4171-aa28-0aab807180cd" xlink:to="loc_us-gaap_ValuationAllowanceTable_eb01aa5d-45d3-4fe3-9e58-d25922f7fa70" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_d8854d8a-ec3f-4d80-b17f-a5fe6d8579a3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_eb01aa5d-45d3-4fe3-9e58-d25922f7fa70" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_d8854d8a-ec3f-4d80-b17f-a5fe6d8579a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_d8854d8a-ec3f-4d80-b17f-a5fe6d8579a3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d8854d8a-ec3f-4d80-b17f-a5fe6d8579a3" xlink:to="loc_us-gaap_SegmentDomain_d8854d8a-ec3f-4d80-b17f-a5fe6d8579a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_61f4b0d6-0f28-4c3e-a352-a3dc4215a4c7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d8854d8a-ec3f-4d80-b17f-a5fe6d8579a3" xlink:to="loc_us-gaap_SegmentDomain_61f4b0d6-0f28-4c3e-a352-a3dc4215a4c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_8850f473-d607-45cc-a3c7-b59b2a4e9a61" xlink:href="fnf-20201231.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_61f4b0d6-0f28-4c3e-a352-a3dc4215a4c7" xlink:to="loc_fnf_TitleSegmentMember_8850f473-d607-45cc-a3c7-b59b2a4e9a61" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGSegmentMember_8af71eb9-d500-4d1c-8261-d5f9811b7b3f" xlink:href="fnf-20201231.xsd#fnf_FGSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_61f4b0d6-0f28-4c3e-a352-a3dc4215a4c7" xlink:to="loc_fnf_FGSegmentMember_8af71eb9-d500-4d1c-8261-d5f9811b7b3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodAxis_fcd924d5-1c95-4862-8808-def2cbff0d72" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_eb01aa5d-45d3-4fe3-9e58-d25922f7fa70" xlink:to="loc_us-gaap_TaxPeriodAxis_fcd924d5-1c95-4862-8808-def2cbff0d72" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodDomain_fcd924d5-1c95-4862-8808-def2cbff0d72_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxPeriodAxis_fcd924d5-1c95-4862-8808-def2cbff0d72" xlink:to="loc_us-gaap_TaxPeriodDomain_fcd924d5-1c95-4862-8808-def2cbff0d72_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodDomain_f18da3d5-fab1-4a6d-9d78-dd11148b16b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxPeriodAxis_fcd924d5-1c95-4862-8808-def2cbff0d72" xlink:to="loc_us-gaap_TaxPeriodDomain_f18da3d5-fab1-4a6d-9d78-dd11148b16b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarliestTaxYearMember_36226fa0-34ee-4e80-ae3f-e4245636922b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarliestTaxYearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxPeriodDomain_f18da3d5-fab1-4a6d-9d78-dd11148b16b4" xlink:to="loc_us-gaap_EarliestTaxYearMember_36226fa0-34ee-4e80-ae3f-e4245636922b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_1c02f7ed-5112-4760-9003-d8a141151fef" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_eb01aa5d-45d3-4fe3-9e58-d25922f7fa70" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_1c02f7ed-5112-4760-9003-d8a141151fef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_1c02f7ed-5112-4760-9003-d8a141151fef_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_1c02f7ed-5112-4760-9003-d8a141151fef" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_1c02f7ed-5112-4760-9003-d8a141151fef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_691b4914-e734-48a2-b2af-25b641ed6b1c" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_1c02f7ed-5112-4760-9003-d8a141151fef" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_691b4914-e734-48a2-b2af-25b641ed6b1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BPGHoldingsLLCMember_31a93e92-bca0-4f39-875a-4dbaacc663cc" xlink:href="fnf-20201231.xsd#fnf_BPGHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_691b4914-e734-48a2-b2af-25b641ed6b1c" xlink:to="loc_fnf_BPGHoldingsLLCMember_31a93e92-bca0-4f39-875a-4dbaacc663cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_3d15f00b-f9ce-40aa-b578-0edaeece0b84" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_eb01aa5d-45d3-4fe3-9e58-d25922f7fa70" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_3d15f00b-f9ce-40aa-b578-0edaeece0b84" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_3d15f00b-f9ce-40aa-b578-0edaeece0b84_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_3d15f00b-f9ce-40aa-b578-0edaeece0b84" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_3d15f00b-f9ce-40aa-b578-0edaeece0b84_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_0021882c-8ef5-4966-b8c5-1ed8e2f968d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_3d15f00b-f9ce-40aa-b578-0edaeece0b84" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_0021882c-8ef5-4966-b8c5-1ed8e2f968d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralBusinessMember_4cfd3ec2-3754-47b6-ac86-c37d31df79a0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_0021882c-8ef5-4966-b8c5-1ed8e2f968d8" xlink:to="loc_us-gaap_GeneralBusinessMember_4cfd3ec2-3754-47b6-ac86-c37d31df79a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_f87be05e-2a4d-4957-acc6-8006eeb5c7c9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationAllowanceByDeferredTaxAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_eb01aa5d-45d3-4fe3-9e58-d25922f7fa70" xlink:to="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_f87be05e-2a4d-4957-acc6-8006eeb5c7c9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetDomain_f87be05e-2a4d-4957-acc6-8006eeb5c7c9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_f87be05e-2a4d-4957-acc6-8006eeb5c7c9" xlink:to="loc_us-gaap_DeferredTaxAssetDomain_f87be05e-2a4d-4957-acc6-8006eeb5c7c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetDomain_8b86bc16-143e-4f22-bccf-d1cbf2b368e1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_f87be05e-2a4d-4957-acc6-8006eeb5c7c9" xlink:to="loc_us-gaap_DeferredTaxAssetDomain_8b86bc16-143e-4f22-bccf-d1cbf2b368e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralBusinessMember_f5d49d06-4756-4dbc-bab0-1772a468d3e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetDomain_8b86bc16-143e-4f22-bccf-d1cbf2b368e1" xlink:to="loc_us-gaap_GeneralBusinessMember_f5d49d06-4756-4dbc-bab0-1772a468d3e0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/IncomeTaxesReconciliationofBeginningandEndingUnrecognizedTaxBenefitsDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#IncomeTaxesReconciliationofBeginningandEndingUnrecognizedTaxBenefitsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IncomeTaxesReconciliationofBeginningandEndingUnrecognizedTaxBenefitsDetails" xlink:type="extended" id="i8cac19ec413a4a4c8f32bd282f750210_IncomeTaxesReconciliationofBeginningandEndingUnrecognizedTaxBenefitsDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlans" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlans"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlans" xlink:type="extended" id="id56d436baf1c425c81291230255a5ad5_EmployeeBenefitPlans"/>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansTables" xlink:type="extended" id="i2e476fb6356d4611a983ee250ec921c7_EmployeeBenefitPlansTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansStockPurchasePlanDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansStockPurchasePlanDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansStockPurchasePlanDetails" xlink:type="extended" id="ibd524dff9fa04e909c34a5d58add2727_EmployeeBenefitPlansStockPurchasePlanDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_db7b5388-a057-4c27-b6ec-6801dca386ae" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_b1401b27-cf6b-49a7-984f-fcdb6dbd7e91" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_db7b5388-a057-4c27-b6ec-6801dca386ae" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_b1401b27-cf6b-49a7-984f-fcdb6dbd7e91" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_27ec3d28-4490-442f-8587-d7a473b5acb8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_db7b5388-a057-4c27-b6ec-6801dca386ae" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_27ec3d28-4490-442f-8587-d7a473b5acb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2395be1a-c941-45c1-9aed-c83e4a9c41e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_db7b5388-a057-4c27-b6ec-6801dca386ae" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2395be1a-c941-45c1-9aed-c83e4a9c41e0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_68234e88-1487-42fc-9863-cbdf02a6f686" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2395be1a-c941-45c1-9aed-c83e4a9c41e0" xlink:to="loc_srt_RangeAxis_68234e88-1487-42fc-9863-cbdf02a6f686" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_68234e88-1487-42fc-9863-cbdf02a6f686_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_68234e88-1487-42fc-9863-cbdf02a6f686" xlink:to="loc_srt_RangeMember_68234e88-1487-42fc-9863-cbdf02a6f686_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_64de9290-ff6a-4082-9c60-ba9a06b1cd3d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_68234e88-1487-42fc-9863-cbdf02a6f686" xlink:to="loc_srt_RangeMember_64de9290-ff6a-4082-9c60-ba9a06b1cd3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_5d57ba61-6d28-40e2-8b91-57043fa3f173" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_64de9290-ff6a-4082-9c60-ba9a06b1cd3d" xlink:to="loc_srt_MinimumMember_5d57ba61-6d28-40e2-8b91-57043fa3f173" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_ce3b8465-04fc-4462-926c-5a9b0b22e2a7" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_64de9290-ff6a-4082-9c60-ba9a06b1cd3d" xlink:to="loc_srt_MaximumMember_ce3b8465-04fc-4462-926c-5a9b0b22e2a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_3e62bdac-5242-4fab-b631-e28428e19830" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2395be1a-c941-45c1-9aed-c83e4a9c41e0" xlink:to="loc_us-gaap_AwardTypeAxis_3e62bdac-5242-4fab-b631-e28428e19830" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3e62bdac-5242-4fab-b631-e28428e19830_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_3e62bdac-5242-4fab-b631-e28428e19830" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3e62bdac-5242-4fab-b631-e28428e19830_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_29697bcb-4203-484f-bd4d-2e7c64522ad6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_3e62bdac-5242-4fab-b631-e28428e19830" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_29697bcb-4203-484f-bd4d-2e7c64522ad6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_de46e173-cdae-49bf-81c7-5fc409c1eaa8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_29697bcb-4203-484f-bd4d-2e7c64522ad6" xlink:to="loc_us-gaap_EmployeeStockMember_de46e173-cdae-49bf-81c7-5fc409c1eaa8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlans401kProfitSharingPlanDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlans401kProfitSharingPlanDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlans401kProfitSharingPlanDetails" xlink:type="extended" id="ibbcf37ddd6264417ac0d03061feb95b8_EmployeeBenefitPlans401kProfitSharingPlanDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansOmnibusIncentivePlanDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansOmnibusIncentivePlanDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansOmnibusIncentivePlanDetails" xlink:type="extended" id="ic5cc2651961e40e0ab963e5d956daa13_EmployeeBenefitPlansOmnibusIncentivePlanDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_c6cfea19-2e0c-48b4-b0c3-7d3d1ed76371" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_c6cfea19-2e0c-48b4-b0c3-7d3d1ed76371" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_6225bdcc-478d-4d3f-8d55-21c559e858c7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_6225bdcc-478d-4d3f-8d55-21c559e858c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_b34de08e-af4e-4fcb-9fc2-2467d4acc48d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_b34de08e-af4e-4fcb-9fc2-2467d4acc48d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_f4735499-d680-4128-88f6-e11e7f400ddb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_f4735499-d680-4128-88f6-e11e7f400ddb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_4f71bab9-4f37-4381-9912-9589b70eb145" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_4f71bab9-4f37-4381-9912-9589b70eb145" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_4efb9294-b9cb-4549-92d4-fb59593c0c2c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_4efb9294-b9cb-4549-92d4-fb59593c0c2c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e530bb96-5e6e-415a-b38e-65fbf2699dff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_30c1854f-7228-4dee-b099-e40d6a8e8dde" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e530bb96-5e6e-415a-b38e-65fbf2699dff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_979c3d91-35ff-4af6-bef0-1dbd3d9b2ca6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e530bb96-5e6e-415a-b38e-65fbf2699dff" xlink:to="loc_us-gaap_PlanNameAxis_979c3d91-35ff-4af6-bef0-1dbd3d9b2ca6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_979c3d91-35ff-4af6-bef0-1dbd3d9b2ca6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_979c3d91-35ff-4af6-bef0-1dbd3d9b2ca6" xlink:to="loc_us-gaap_PlanNameDomain_979c3d91-35ff-4af6-bef0-1dbd3d9b2ca6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_91bdcfd8-9697-4952-8236-0274ab45b0ce" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_979c3d91-35ff-4af6-bef0-1dbd3d9b2ca6" xlink:to="loc_us-gaap_PlanNameDomain_91bdcfd8-9697-4952-8236-0274ab45b0ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TheOmnibusPlanMember_3137c246-7936-4c95-a103-bf6b7012d11d" xlink:href="fnf-20201231.xsd#fnf_TheOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_91bdcfd8-9697-4952-8236-0274ab45b0ce" xlink:to="loc_fnf_TheOmnibusPlanMember_3137c246-7936-4c95-a103-bf6b7012d11d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_7c91423a-0c6d-4058-8b7c-b13cbe037fd5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e530bb96-5e6e-415a-b38e-65fbf2699dff" xlink:to="loc_us-gaap_AwardTypeAxis_7c91423a-0c6d-4058-8b7c-b13cbe037fd5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7c91423a-0c6d-4058-8b7c-b13cbe037fd5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_7c91423a-0c6d-4058-8b7c-b13cbe037fd5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7c91423a-0c6d-4058-8b7c-b13cbe037fd5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57fd3283-1641-4b82-a9e7-39029d7a3a6f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_7c91423a-0c6d-4058-8b7c-b13cbe037fd5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57fd3283-1641-4b82-a9e7-39029d7a3a6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_847d205f-ba90-4e3a-aee1-5bdabfe137eb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57fd3283-1641-4b82-a9e7-39029d7a3a6f" xlink:to="loc_us-gaap_RestrictedStockMember_847d205f-ba90-4e3a-aee1-5bdabfe137eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_2c12009e-cd7e-45aa-b2cc-1ea9f40f4c03" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57fd3283-1641-4b82-a9e7-39029d7a3a6f" xlink:to="loc_us-gaap_EmployeeStockOptionMember_2c12009e-cd7e-45aa-b2cc-1ea9f40f4c03" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansFGOmnibusIncentivePlanDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansFGOmnibusIncentivePlanDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansFGOmnibusIncentivePlanDetails" xlink:type="extended" id="i64607d92ace846348a077e6d8aa23e98_EmployeeBenefitPlansFGOmnibusIncentivePlanDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_826038e9-3db4-44c5-ad55-cb335d430e03" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_75edff0a-d006-4284-9b84-01b380f0fe1a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_826038e9-3db4-44c5-ad55-cb335d430e03" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_75edff0a-d006-4284-9b84-01b380f0fe1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_b4380a66-f3c0-49d1-ace1-20d52e63f83c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_826038e9-3db4-44c5-ad55-cb335d430e03" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_b4380a66-f3c0-49d1-ace1-20d52e63f83c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_ee1d09c2-0beb-4f61-b803-3016681865b6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_826038e9-3db4-44c5-ad55-cb335d430e03" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_ee1d09c2-0beb-4f61-b803-3016681865b6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_0989063d-553e-4b91-b81b-c768a3b3be03" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_826038e9-3db4-44c5-ad55-cb335d430e03" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_0989063d-553e-4b91-b81b-c768a3b3be03" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_5720ced6-3529-4794-9c2d-ad73ac04720a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_826038e9-3db4-44c5-ad55-cb335d430e03" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_5720ced6-3529-4794-9c2d-ad73ac04720a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_da887bee-7cc8-4034-bd39-a33863431ae3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_826038e9-3db4-44c5-ad55-cb335d430e03" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_da887bee-7cc8-4034-bd39-a33863431ae3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_cf88bfda-b1a9-4fea-9516-c38e4bda01ef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_da887bee-7cc8-4034-bd39-a33863431ae3" xlink:to="loc_us-gaap_PlanNameAxis_cf88bfda-b1a9-4fea-9516-c38e4bda01ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_cf88bfda-b1a9-4fea-9516-c38e4bda01ef_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_cf88bfda-b1a9-4fea-9516-c38e4bda01ef" xlink:to="loc_us-gaap_PlanNameDomain_cf88bfda-b1a9-4fea-9516-c38e4bda01ef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_176f2e76-873a-468d-9d29-4fcd470f555c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_cf88bfda-b1a9-4fea-9516-c38e4bda01ef" xlink:to="loc_us-gaap_PlanNameDomain_176f2e76-873a-468d-9d29-4fcd470f555c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGOmnibusPlanMember_c3dafe8b-616c-4ac4-afb9-e902169fa1b3" xlink:href="fnf-20201231.xsd#fnf_FGOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_176f2e76-873a-468d-9d29-4fcd470f555c" xlink:to="loc_fnf_FGOmnibusPlanMember_c3dafe8b-616c-4ac4-afb9-e902169fa1b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_193fa1a7-0128-4cb8-aaf0-bba281e0ffcd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_da887bee-7cc8-4034-bd39-a33863431ae3" xlink:to="loc_us-gaap_AwardTypeAxis_193fa1a7-0128-4cb8-aaf0-bba281e0ffcd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_193fa1a7-0128-4cb8-aaf0-bba281e0ffcd_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_193fa1a7-0128-4cb8-aaf0-bba281e0ffcd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_193fa1a7-0128-4cb8-aaf0-bba281e0ffcd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d5047f84-f326-4d34-9570-157cb4bb2a9f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_193fa1a7-0128-4cb8-aaf0-bba281e0ffcd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d5047f84-f326-4d34-9570-157cb4bb2a9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_40e87ece-c796-405d-aa54-3a0f9908ee61" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d5047f84-f326-4d34-9570-157cb4bb2a9f" xlink:to="loc_us-gaap_EmployeeStockOptionMember_40e87ece-c796-405d-aa54-3a0f9908ee61" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_a50c90dc-83b3-4565-916a-4747042b9b2b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d5047f84-f326-4d34-9570-157cb4bb2a9f" xlink:to="loc_us-gaap_RestrictedStockMember_a50c90dc-83b3-4565-916a-4747042b9b2b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansStockOptionActivityDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansStockOptionActivityDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansStockOptionActivityDetails" xlink:type="extended" id="ib36d4e9873cb4e41980a17e3b3a8cdb6_EmployeeBenefitPlansStockOptionActivityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c5ead1d-a431-4437-95cd-3666c44a4753" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2c7e25d1-a84c-4bf7-8d44-4c06e54844c0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c5ead1d-a431-4437-95cd-3666c44a4753" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2c7e25d1-a84c-4bf7-8d44-4c06e54844c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_653326df-28e9-4796-92ca-d2f092686d36" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2c7e25d1-a84c-4bf7-8d44-4c06e54844c0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_653326df-28e9-4796-92ca-d2f092686d36" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInPeriodGross_5b5c1c6d-9a63-4d22-be0b-103183c51982" xlink:href="fnf-20201231.xsd#fnf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInPeriodGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2c7e25d1-a84c-4bf7-8d44-4c06e54844c0" xlink:to="loc_fnf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInPeriodGross_5b5c1c6d-9a63-4d22-be0b-103183c51982" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_76c3b6fb-52bd-46fb-81cb-b7eee99bf0ef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2c7e25d1-a84c-4bf7-8d44-4c06e54844c0" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_76c3b6fb-52bd-46fb-81cb-b7eee99bf0ef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_20cae094-b733-482b-82b8-c22b15296139" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_2c7e25d1-a84c-4bf7-8d44-4c06e54844c0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_20cae094-b733-482b-82b8-c22b15296139" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_c9df9c06-fd68-4535-bacb-91ed0c82f987" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c7f3f50a-c21d-4fc4-9111-ab7e178b504d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c5ead1d-a431-4437-95cd-3666c44a4753" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c7f3f50a-c21d-4fc4-9111-ab7e178b504d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_90661291-308b-4ea5-aa50-b6db32f44b83" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c7f3f50a-c21d-4fc4-9111-ab7e178b504d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_90661291-308b-4ea5-aa50-b6db32f44b83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAssumedInPeriodWeightedAverageExercisePrice_1b9ccf5e-3b2a-433a-954e-f759487f7198" xlink:href="fnf-20201231.xsd#fnf_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAssumedInPeriodWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c7f3f50a-c21d-4fc4-9111-ab7e178b504d" xlink:to="loc_fnf_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAssumedInPeriodWeightedAverageExercisePrice_1b9ccf5e-3b2a-433a-954e-f759487f7198" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_c53a1ebe-16ec-475a-980f-9353ee92b876" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c7f3f50a-c21d-4fc4-9111-ab7e178b504d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_c53a1ebe-16ec-475a-980f-9353ee92b876" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_75a1a35b-3766-476b-af79-71c0206ae2b6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_c7f3f50a-c21d-4fc4-9111-ab7e178b504d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_75a1a35b-3766-476b-af79-71c0206ae2b6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_619c3a01-3a92-4e02-9780-fb435ae2d796" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_17208d38-e83b-4b85-abf4-a905f464d68d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c5ead1d-a431-4437-95cd-3666c44a4753" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_17208d38-e83b-4b85-abf4-a905f464d68d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_ed3a049d-1806-4931-b6b3-b8303a5141b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_17208d38-e83b-4b85-abf4-a905f464d68d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_ed3a049d-1806-4931-b6b3-b8303a5141b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_03d52aac-bd3b-4d6c-9150-8d6849c0102a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c5ead1d-a431-4437-95cd-3666c44a4753" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_03d52aac-bd3b-4d6c-9150-8d6849c0102a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_d7f6744f-9a66-46c6-b8e8-069148e046f2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_03d52aac-bd3b-4d6c-9150-8d6849c0102a" xlink:to="loc_us-gaap_PlanNameAxis_d7f6744f-9a66-46c6-b8e8-069148e046f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_d7f6744f-9a66-46c6-b8e8-069148e046f2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_d7f6744f-9a66-46c6-b8e8-069148e046f2" xlink:to="loc_us-gaap_PlanNameDomain_d7f6744f-9a66-46c6-b8e8-069148e046f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_c89d7969-5597-4881-99bb-711b46411171" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_d7f6744f-9a66-46c6-b8e8-069148e046f2" xlink:to="loc_us-gaap_PlanNameDomain_c89d7969-5597-4881-99bb-711b46411171" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TheOmnibusPlanMember_d07ebcb0-cb13-4a93-b759-6a7e25b67ff2" xlink:href="fnf-20201231.xsd#fnf_TheOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_c89d7969-5597-4881-99bb-711b46411171" xlink:to="loc_fnf_TheOmnibusPlanMember_d07ebcb0-cb13-4a93-b759-6a7e25b67ff2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGOmnibusPlanMember_37b383e2-196a-4835-a7ba-494b62465e8b" xlink:href="fnf-20201231.xsd#fnf_FGOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_c89d7969-5597-4881-99bb-711b46411171" xlink:to="loc_fnf_FGOmnibusPlanMember_37b383e2-196a-4835-a7ba-494b62465e8b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansRestrictedStockActivityDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansRestrictedStockActivityDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansRestrictedStockActivityDetails" xlink:type="extended" id="i928ba638208648f7a22a07c7c96001b6_EmployeeBenefitPlansRestrictedStockActivityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_060ecdd4-a8d9-434e-af9a-f677a8cb5ee9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_91cfabaf-99ba-4daf-9cd3-9eb9f05a3e3b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_060ecdd4-a8d9-434e-af9a-f677a8cb5ee9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_91cfabaf-99ba-4daf-9cd3-9eb9f05a3e3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1fb3c0c6-ecec-4ed9-b1b8-340a200dea4e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_91cfabaf-99ba-4daf-9cd3-9eb9f05a3e3b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1fb3c0c6-ecec-4ed9-b1b8-340a200dea4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_be03a636-f4cb-4673-bbc3-7506655662a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_91cfabaf-99ba-4daf-9cd3-9eb9f05a3e3b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_be03a636-f4cb-4673-bbc3-7506655662a7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_db7e3b87-eae4-4e9b-bdaf-b406c7cdb5f8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_91cfabaf-99ba-4daf-9cd3-9eb9f05a3e3b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_db7e3b87-eae4-4e9b-bdaf-b406c7cdb5f8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_e5c7bac7-c3df-408a-8731-a835b946307c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_91cfabaf-99ba-4daf-9cd3-9eb9f05a3e3b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_e5c7bac7-c3df-408a-8731-a835b946307c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_af24bb9d-5b07-45d3-b511-aa83a5106205" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_64c9d351-334f-4c08-97c7-30e0ccc9f5a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_060ecdd4-a8d9-434e-af9a-f677a8cb5ee9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_64c9d351-334f-4c08-97c7-30e0ccc9f5a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_c257a95c-a219-41b3-9093-e9e2dbac4823" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_64c9d351-334f-4c08-97c7-30e0ccc9f5a9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_c257a95c-a219-41b3-9093-e9e2dbac4823" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_fd24bb4d-c85d-4f46-98f7-3de4873b3fda" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_64c9d351-334f-4c08-97c7-30e0ccc9f5a9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_fd24bb4d-c85d-4f46-98f7-3de4873b3fda" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_813277ea-a5dc-413a-8c1e-9a7fd5c95f53" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_64c9d351-334f-4c08-97c7-30e0ccc9f5a9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_813277ea-a5dc-413a-8c1e-9a7fd5c95f53" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_a20ed016-8898-464b-b06b-5b6359c1f681" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_64c9d351-334f-4c08-97c7-30e0ccc9f5a9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_a20ed016-8898-464b-b06b-5b6359c1f681" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0d6387b7-b4c1-4f71-a8c2-c14f520139fb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ef6834aa-813d-4334-88e2-353997c885ca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_060ecdd4-a8d9-434e-af9a-f677a8cb5ee9" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ef6834aa-813d-4334-88e2-353997c885ca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_6abbb8b4-3480-4715-8711-0b84636f9fba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ef6834aa-813d-4334-88e2-353997c885ca" xlink:to="loc_us-gaap_PlanNameAxis_6abbb8b4-3480-4715-8711-0b84636f9fba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_6abbb8b4-3480-4715-8711-0b84636f9fba_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_6abbb8b4-3480-4715-8711-0b84636f9fba" xlink:to="loc_us-gaap_PlanNameDomain_6abbb8b4-3480-4715-8711-0b84636f9fba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_2eb6e8ea-e686-4b03-8eec-038f73ff8f83" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_6abbb8b4-3480-4715-8711-0b84636f9fba" xlink:to="loc_us-gaap_PlanNameDomain_2eb6e8ea-e686-4b03-8eec-038f73ff8f83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TheOmnibusPlanMember_064e2390-8e18-4f84-be4a-617ccd82a9d4" xlink:href="fnf-20201231.xsd#fnf_TheOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_2eb6e8ea-e686-4b03-8eec-038f73ff8f83" xlink:to="loc_fnf_TheOmnibusPlanMember_064e2390-8e18-4f84-be4a-617ccd82a9d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGOmnibusPlanMember_2994c868-7bb7-43b8-a289-6b0be2f29b5c" xlink:href="fnf-20201231.xsd#fnf_FGOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_2eb6e8ea-e686-4b03-8eec-038f73ff8f83" xlink:to="loc_fnf_FGOmnibusPlanMember_2994c868-7bb7-43b8-a289-6b0be2f29b5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_5410f335-29cd-4d84-94f0-d602f6be26d1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ef6834aa-813d-4334-88e2-353997c885ca" xlink:to="loc_us-gaap_AwardTypeAxis_5410f335-29cd-4d84-94f0-d602f6be26d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5410f335-29cd-4d84-94f0-d602f6be26d1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_5410f335-29cd-4d84-94f0-d602f6be26d1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5410f335-29cd-4d84-94f0-d602f6be26d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5054c0fa-9ae1-4020-ab41-d95ccb37ac3d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_5410f335-29cd-4d84-94f0-d602f6be26d1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5054c0fa-9ae1-4020-ab41-d95ccb37ac3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_c8e8a825-c653-4403-afa3-2cfb898da1d4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5054c0fa-9ae1-4020-ab41-d95ccb37ac3d" xlink:to="loc_us-gaap_RestrictedStockMember_c8e8a825-c653-4403-afa3-2cfb898da1d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_e2151eaf-b750-4238-96f7-7f6a4caab24c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ef6834aa-813d-4334-88e2-353997c885ca" xlink:to="loc_us-gaap_StatementClassOfStockAxis_e2151eaf-b750-4238-96f7-7f6a4caab24c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_e2151eaf-b750-4238-96f7-7f6a4caab24c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_e2151eaf-b750-4238-96f7-7f6a4caab24c" xlink:to="loc_us-gaap_ClassOfStockDomain_e2151eaf-b750-4238-96f7-7f6a4caab24c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_f1ed7a30-5854-40b9-9867-02da0802c46a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_e2151eaf-b750-4238-96f7-7f6a4caab24c" xlink:to="loc_us-gaap_ClassOfStockDomain_f1ed7a30-5854-40b9-9867-02da0802c46a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_65b6241a-5ec5-4a65-b4fe-8e57d3561f82" xlink:href="fnf-20201231.xsd#fnf_FidelityNationalFinancialGroupCommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_f1ed7a30-5854-40b9-9867-02da0802c46a" xlink:to="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_65b6241a-5ec5-4a65-b4fe-8e57d3561f82" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansOptionsOutstandingandExercisablebyExercisePriceDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansOptionsOutstandingandExercisablebyExercisePriceDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansOptionsOutstandingandExercisablebyExercisePriceDetails" xlink:type="extended" id="ifb6d815a6a294fffa56f1a63c5c4a90e_EmployeeBenefitPlansOptionsOutstandingandExercisablebyExercisePriceDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit_c099b509-abfa-4e37-a9d1-5ef3b368450b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit_c099b509-abfa-4e37-a9d1-5ef3b368450b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit_9c499824-4307-4f8f-b470-1483cfd2c375" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit_9c499824-4307-4f8f-b470-1483cfd2c375" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions_1123a0b5-90a0-4788-bced-4c6985267d4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions_1123a0b5-90a0-4788-bced-4c6985267d4f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2_487f173b-e3ab-44cf-b503-dfaec475e817" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2_487f173b-e3ab-44cf-b503-dfaec475e817" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1_2cef929a-62a3-46dd-82d1-ac27c3619074" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1_2cef929a-62a3-46dd-82d1-ac27c3619074" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_e2d5b0bf-d5fb-4e1c-98ba-5e2993960b7a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_e2d5b0bf-d5fb-4e1c-98ba-5e2993960b7a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions_d2bcf82e-fc29-4595-9a04-93765a3314a0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions_d2bcf82e-fc29-4595-9a04-93765a3314a0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2_3c0f2366-691e-4ad4-8870-be76e8d8b952" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2_3c0f2366-691e-4ad4-8870-be76e8d8b952" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_e0f611df-b094-426e-9738-d0a14e003b26" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_e0f611df-b094-426e-9738-d0a14e003b26" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_95b4dff0-df5e-40cb-9739-0512507ae661" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_95b4dff0-df5e-40cb-9739-0512507ae661" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable_07cd44a0-df8e-4a23-a4df-edaf6c35bac5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_b73b3569-9c96-4c9a-9b3e-498ec59808ab" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable_07cd44a0-df8e-4a23-a4df-edaf6c35bac5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_14da1a8f-5447-40ce-8636-5ce301b8bed3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable_07cd44a0-df8e-4a23-a4df-edaf6c35bac5" xlink:to="loc_us-gaap_PlanNameAxis_14da1a8f-5447-40ce-8636-5ce301b8bed3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_14da1a8f-5447-40ce-8636-5ce301b8bed3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_14da1a8f-5447-40ce-8636-5ce301b8bed3" xlink:to="loc_us-gaap_PlanNameDomain_14da1a8f-5447-40ce-8636-5ce301b8bed3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_97caa497-120d-4a6d-8c32-820940a9cce6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_14da1a8f-5447-40ce-8636-5ce301b8bed3" xlink:to="loc_us-gaap_PlanNameDomain_97caa497-120d-4a6d-8c32-820940a9cce6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TheOmnibusPlanMember_78e2dd8e-3641-479a-8915-8db61c683192" xlink:href="fnf-20201231.xsd#fnf_TheOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_97caa497-120d-4a6d-8c32-820940a9cce6" xlink:to="loc_fnf_TheOmnibusPlanMember_78e2dd8e-3641-479a-8915-8db61c683192" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_77e1d0d9-533b-4496-b7c4-fba6f79603a4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable_07cd44a0-df8e-4a23-a4df-edaf6c35bac5" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_77e1d0d9-533b-4496-b7c4-fba6f79603a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_77e1d0d9-533b-4496-b7c4-fba6f79603a4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_77e1d0d9-533b-4496-b7c4-fba6f79603a4" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_77e1d0d9-533b-4496-b7c4-fba6f79603a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_77e1d0d9-533b-4496-b7c4-fba6f79603a4" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ExercisePriceRangeOneMember_e9f06731-9699-40d9-a6cc-766c03a87714" xlink:href="fnf-20201231.xsd#fnf_ExercisePriceRangeOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:to="loc_fnf_ExercisePriceRangeOneMember_e9f06731-9699-40d9-a6cc-766c03a87714" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ExercisePriceRange2Member_f2f22c55-826f-411a-acea-12a2cbe3b8cd" xlink:href="fnf-20201231.xsd#fnf_ExercisePriceRange2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:to="loc_fnf_ExercisePriceRange2Member_f2f22c55-826f-411a-acea-12a2cbe3b8cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ExercisePriceRangeThreeMember_a3a97c78-7b7c-4154-9520-4f3103079dbe" xlink:href="fnf-20201231.xsd#fnf_ExercisePriceRangeThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:to="loc_fnf_ExercisePriceRangeThreeMember_a3a97c78-7b7c-4154-9520-4f3103079dbe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ExercisePriceRangeFourMember_942b63c7-39e5-489d-b2c7-103d07e29ec1" xlink:href="fnf-20201231.xsd#fnf_ExercisePriceRangeFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:to="loc_fnf_ExercisePriceRangeFourMember_942b63c7-39e5-489d-b2c7-103d07e29ec1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ExercisePriceRangeFiveMember_a67a76d9-bc04-49ff-a915-fe04b9ef6f0e" xlink:href="fnf-20201231.xsd#fnf_ExercisePriceRangeFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:to="loc_fnf_ExercisePriceRangeFiveMember_a67a76d9-bc04-49ff-a915-fe04b9ef6f0e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ExercisePriceRangeSixMember_9d67374a-c565-4cb8-ada6-fb9b5e71255e" xlink:href="fnf-20201231.xsd#fnf_ExercisePriceRangeSixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_a8843713-71b6-4caa-9f13-22d0188f9f32" xlink:to="loc_fnf_ExercisePriceRangeSixMember_9d67374a-c565-4cb8-ada6-fb9b5e71255e" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansNarrativeDetails" xlink:type="extended" id="i0ea2304f5e6b434d9613e889fee25e79_EmployeeBenefitPlansNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantDateFairValue_c019cd20-2865-4955-9db8-164d389d9080" xlink:href="fnf-20201231.xsd#fnf_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:to="loc_fnf_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantDateFairValue_c019cd20-2865-4955-9db8-164d389d9080" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_9ebdfc5e-a0a9-49fd-8b49-3043079a2369" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_9ebdfc5e-a0a9-49fd-8b49-3043079a2369" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_29b2d7dc-1b92-491c-927f-5742a2e63001" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_29b2d7dc-1b92-491c-927f-5742a2e63001" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_a93a1369-101f-4a2f-a219-9e680e88329e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_a93a1369-101f-4a2f-a219-9e680e88329e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_063c9777-c29c-4046-a584-6963a3ffb24e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_063c9777-c29c-4046-a584-6963a3ffb24e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_573064b9-7051-409a-8e00-7c3154ab6b1a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_573064b9-7051-409a-8e00-7c3154ab6b1a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2a2891f3-1ce2-4a83-95d1-68f9a3ad07a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d42f2dae-d3d4-4f93-bbba-881c27bc80f7" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2a2891f3-1ce2-4a83-95d1-68f9a3ad07a9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_fa8bd219-1d97-45d8-9143-d6d33571b811" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2a2891f3-1ce2-4a83-95d1-68f9a3ad07a9" xlink:to="loc_us-gaap_PlanNameAxis_fa8bd219-1d97-45d8-9143-d6d33571b811" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_fa8bd219-1d97-45d8-9143-d6d33571b811_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_fa8bd219-1d97-45d8-9143-d6d33571b811" xlink:to="loc_us-gaap_PlanNameDomain_fa8bd219-1d97-45d8-9143-d6d33571b811_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_9eb52b2f-157f-4c20-b54c-99c58ae20a4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_fa8bd219-1d97-45d8-9143-d6d33571b811" xlink:to="loc_us-gaap_PlanNameDomain_9eb52b2f-157f-4c20-b54c-99c58ae20a4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TheOmnibusPlanMember_399a39b9-0e9e-4e3f-b98c-05d73044530b" xlink:href="fnf-20201231.xsd#fnf_TheOmnibusPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_9eb52b2f-157f-4c20-b54c-99c58ae20a4f" xlink:to="loc_fnf_TheOmnibusPlanMember_399a39b9-0e9e-4e3f-b98c-05d73044530b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_326dd7a0-b4e3-4c2c-b58f-dc6a039a8a85" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2a2891f3-1ce2-4a83-95d1-68f9a3ad07a9" xlink:to="loc_us-gaap_AwardTypeAxis_326dd7a0-b4e3-4c2c-b58f-dc6a039a8a85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_326dd7a0-b4e3-4c2c-b58f-dc6a039a8a85_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_326dd7a0-b4e3-4c2c-b58f-dc6a039a8a85" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_326dd7a0-b4e3-4c2c-b58f-dc6a039a8a85_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2fdf617f-c79f-41ed-86fb-4d8885d19f1a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_326dd7a0-b4e3-4c2c-b58f-dc6a039a8a85" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2fdf617f-c79f-41ed-86fb-4d8885d19f1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_10b2eff7-ef09-4513-a194-0bb0e0ffcf1a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2fdf617f-c79f-41ed-86fb-4d8885d19f1a" xlink:to="loc_us-gaap_RestrictedStockMember_10b2eff7-ef09-4513-a194-0bb0e0ffcf1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_d51d2a92-bbb3-41d8-bbfc-301de5042b58" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2a2891f3-1ce2-4a83-95d1-68f9a3ad07a9" xlink:to="loc_us-gaap_StatementClassOfStockAxis_d51d2a92-bbb3-41d8-bbfc-301de5042b58" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_d51d2a92-bbb3-41d8-bbfc-301de5042b58_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_d51d2a92-bbb3-41d8-bbfc-301de5042b58" xlink:to="loc_us-gaap_ClassOfStockDomain_d51d2a92-bbb3-41d8-bbfc-301de5042b58_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_edfaf4b0-1f91-4860-8dd0-6f3638c6b5b2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_d51d2a92-bbb3-41d8-bbfc-301de5042b58" xlink:to="loc_us-gaap_ClassOfStockDomain_edfaf4b0-1f91-4860-8dd0-6f3638c6b5b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_db94ed8d-8bdc-4dfe-8350-51a056081067" xlink:href="fnf-20201231.xsd#fnf_FidelityNationalFinancialGroupCommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_edfaf4b0-1f91-4860-8dd0-6f3638c6b5b2" xlink:to="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_db94ed8d-8bdc-4dfe-8350-51a056081067" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/EmployeeBenefitPlansPensionPlansDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#EmployeeBenefitPlansPensionPlansDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/EmployeeBenefitPlansPensionPlansDetails" xlink:type="extended" id="i07f6b89a995144f5b518df32006951d6_EmployeeBenefitPlansPensionPlansDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_2c043f71-48dd-40dd-9835-6773b4083e44" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DefinedBenefitPlanConsecutiveMonthswithHighestCompensationinwhichBenefitsareBased_b0e33102-69b5-4ead-8c68-a8ed30e3fc24" xlink:href="fnf-20201231.xsd#fnf_DefinedBenefitPlanConsecutiveMonthswithHighestCompensationinwhichBenefitsareBased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_2c043f71-48dd-40dd-9835-6773b4083e44" xlink:to="loc_fnf_DefinedBenefitPlanConsecutiveMonthswithHighestCompensationinwhichBenefitsareBased_b0e33102-69b5-4ead-8c68-a8ed30e3fc24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DefinedBenefitPlanMonthsEndingatRetirementorTerminationinwhichBenefitsareBased_d27b7b9b-6344-4e45-8d34-8f3548ac79e9" xlink:href="fnf-20201231.xsd#fnf_DefinedBenefitPlanMonthsEndingatRetirementorTerminationinwhichBenefitsareBased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_2c043f71-48dd-40dd-9835-6773b4083e44" xlink:to="loc_fnf_DefinedBenefitPlanMonthsEndingatRetirementorTerminationinwhichBenefitsareBased_d27b7b9b-6344-4e45-8d34-8f3548ac79e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_553c2244-77db-476c-8c7b-0f42d6e15eea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_2c043f71-48dd-40dd-9835-6773b4083e44" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_553c2244-77db-476c-8c7b-0f42d6e15eea" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_f0c127e4-2d97-4bdc-9f63-dd6f773f6cc7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_2c043f71-48dd-40dd-9835-6773b4083e44" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_f0c127e4-2d97-4bdc-9f63-dd6f773f6cc7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_a461a3fb-bfd4-4679-8a50-c958c968c12e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_2c043f71-48dd-40dd-9835-6773b4083e44" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_a461a3fb-bfd4-4679-8a50-c958c968c12e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_a70565aa-3cec-4ad2-9cde-cd58f0a4af55" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_2c043f71-48dd-40dd-9835-6773b4083e44" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_a70565aa-3cec-4ad2-9cde-cd58f0a4af55" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_d6b334a5-feba-4f11-bd4c-216178e1bd88" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_a70565aa-3cec-4ad2-9cde-cd58f0a4af55" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_d6b334a5-feba-4f11-bd4c-216178e1bd88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_d6b334a5-feba-4f11-bd4c-216178e1bd88_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_d6b334a5-feba-4f11-bd4c-216178e1bd88" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_d6b334a5-feba-4f11-bd4c-216178e1bd88_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ce4aa05f-a9b0-4758-8c62-bbc75756831a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_d6b334a5-feba-4f11-bd4c-216178e1bd88" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ce4aa05f-a9b0-4758-8c62-bbc75756831a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_2771268d-53b9-4bb1-bfcc-ed5d49f298dc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_ce4aa05f-a9b0-4758-8c62-bbc75756831a" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_2771268d-53b9-4bb1-bfcc-ed5d49f298dc" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRisk" xlink:type="simple" xlink:href="fnf-20201231.xsd#FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRisk"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRisk" xlink:type="extended" id="ib9d6abd4b05f49b692c785c87c6e3c74_FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRisk"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskTables" xlink:type="extended" id="i1e09023f6b204e68840acf9083bdfb4e_FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskDetails" xlink:type="extended" id="i31cc7aaeace541b8b706ebb8ed6e2941_FinancialInstrumentswithOffBalanceSheetRiskandConcentrationofRiskDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_f70512f4-b6d4-4da4-925e-159b0080e3f2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_47ec57f7-3578-478b-977b-94cf698b5c21" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_f70512f4-b6d4-4da4-925e-159b0080e3f2" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_47ec57f7-3578-478b-977b-94cf698b5c21" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_0b4e55ed-67c3-4ec5-a261-fc60237a480a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_f70512f4-b6d4-4da4-925e-159b0080e3f2" xlink:to="loc_us-gaap_ConcentrationRiskTable_0b4e55ed-67c3-4ec5-a261-fc60237a480a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_ee0ba16d-3313-4cf0-a079-49e9e5818b81" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_0b4e55ed-67c3-4ec5-a261-fc60237a480a" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_ee0ba16d-3313-4cf0-a079-49e9e5818b81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_ee0ba16d-3313-4cf0-a079-49e9e5818b81_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_ee0ba16d-3313-4cf0-a079-49e9e5818b81" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_ee0ba16d-3313-4cf0-a079-49e9e5818b81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_a1329333-f07c-40e9-813d-6ac92c593e89" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_ee0ba16d-3313-4cf0-a079-49e9e5818b81" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_a1329333-f07c-40e9-813d-6ac92c593e89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_f0518d1b-9488-4bf2-a344-b6841823349e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_a1329333-f07c-40e9-813d-6ac92c593e89" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_f0518d1b-9488-4bf2-a344-b6841823349e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a204e085-6703-48d7-bab3-3d6c757d01e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_0b4e55ed-67c3-4ec5-a261-fc60237a480a" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a204e085-6703-48d7-bab3-3d6c757d01e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_a204e085-6703-48d7-bab3-3d6c757d01e0_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a204e085-6703-48d7-bab3-3d6c757d01e0" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_a204e085-6703-48d7-bab3-3d6c757d01e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_f50d646c-b089-4867-8d8c-ae6dccc74dd6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a204e085-6703-48d7-bab3-3d6c757d01e0" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_f50d646c-b089-4867-8d8c-ae6dccc74dd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleInsurancePremiumsMember_e2d40366-614a-4468-ac00-ab883c58cb02" xlink:href="fnf-20201231.xsd#fnf_TitleInsurancePremiumsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_f50d646c-b089-4867-8d8c-ae6dccc74dd6" xlink:to="loc_fnf_TitleInsurancePremiumsMember_e2d40366-614a-4468-ac00-ab883c58cb02" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_45e83924-f31e-46c6-9dff-0703b583fbd3" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_0b4e55ed-67c3-4ec5-a261-fc60237a480a" xlink:to="loc_srt_StatementGeographicalAxis_45e83924-f31e-46c6-9dff-0703b583fbd3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_45e83924-f31e-46c6-9dff-0703b583fbd3_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_45e83924-f31e-46c6-9dff-0703b583fbd3" xlink:to="loc_srt_SegmentGeographicalDomain_45e83924-f31e-46c6-9dff-0703b583fbd3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_de589987-4ecd-4501-9100-6d96fad4779e" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_45e83924-f31e-46c6-9dff-0703b583fbd3" xlink:to="loc_srt_SegmentGeographicalDomain_de589987-4ecd-4501-9100-6d96fad4779e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_CA_8758f627-7bb1-47c5-9fde-c7a73485f9b6" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_de589987-4ecd-4501-9100-6d96fad4779e" xlink:to="loc_stpr_CA_8758f627-7bb1-47c5-9fde-c7a73485f9b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_TX_232c8b7b-1402-4cda-8673-0796998f3316" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_TX"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_de589987-4ecd-4501-9100-6d96fad4779e" xlink:to="loc_stpr_TX_232c8b7b-1402-4cda-8673-0796998f3316" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_FL_2b60a830-2862-4db1-84e2-56d4fa7868cc" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_FL"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_de589987-4ecd-4501-9100-6d96fad4779e" xlink:to="loc_stpr_FL_2b60a830-2862-4db1-84e2-56d4fa7868cc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_NY_9941b74b-2d02-4f00-bf45-40e5e743de06" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_de589987-4ecd-4501-9100-6d96fad4779e" xlink:to="loc_stpr_NY_9941b74b-2d02-4f00-bf45-40e5e743de06" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIICondensedFinancialInformation" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIICondensedFinancialInformation"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIICondensedFinancialInformation" xlink:type="extended" id="id14844ba9ab84530bda8e7d3a0b9ebd5_ScheduleIICondensedFinancialInformation"/>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationTables" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIICondensedFinancialInformationTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationTables" xlink:type="extended" id="i5559e31b7b6447f0b72c5fff78c4b940_ScheduleIICondensedFinancialInformationTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationBalanceSheetsParentCompanyDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIICondensedFinancialInformationBalanceSheetsParentCompanyDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationBalanceSheetsParentCompanyDetails" xlink:type="extended" id="i9363134ae076465aa7119e28bcc50412_ScheduleIICondensedFinancialInformationBalanceSheetsParentCompanyDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_e15f603f-2072-4b8a-ad2b-473ea8ca3307" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedBalanceSheetStatementsCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_e15f603f-2072-4b8a-ad2b-473ea8ca3307" xlink:to="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_87cdd394-2806-4235-ae54-27ac131e44e9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_87cdd394-2806-4235-ae54-27ac131e44e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermInvestments_aac0ed2a-e69b-4242-8407-4918c34c11fc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_OtherShortTermInvestments_aac0ed2a-e69b-4242-8407-4918c34c11fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_3e867281-d6ce-4840-a0e3-4ee8f84258c8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_3e867281-d6ce-4840-a0e3-4ee8f84258c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_d7ca99d8-d108-47dd-86f3-a60dcec6ce1a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_EquityMethodInvestments_d7ca99d8-d108-47dd-86f3-a60dcec6ce1a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_94efd86c-a42a-4d34-8b1f-4d9fd1292a4e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_94efd86c-a42a-4d34-8b1f-4d9fd1292a4e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentsinSubsidiariesandDuefromSubsidiaries_2bff1156-1fad-4224-ae3f-1f9eeccf2bce" xlink:href="fnf-20201231.xsd#fnf_InvestmentsinSubsidiariesandDuefromSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_fnf_InvestmentsinSubsidiariesandDuefromSubsidiaries_2bff1156-1fad-4224-ae3f-1f9eeccf2bce" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_82434af1-93ce-4ba1-80f3-7684c97b1c5c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_82434af1-93ce-4ba1-80f3-7684c97b1c5c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_2af9e7b1-0292-49a9-858f-e0a62ba5c284" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_2af9e7b1-0292-49a9-858f-e0a62ba5c284" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReceivable_2ca7aa67-21fa-4621-b75e-c4800bc88945" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_17e1dd5c-80bd-42c0-a0a8-7c9c5da83ce0" xlink:to="loc_us-gaap_IncomeTaxReceivable_2ca7aa67-21fa-4621-b75e-c4800bc88945" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_8ac6bd75-cdee-446e-8e42-39342d639017" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_e15f603f-2072-4b8a-ad2b-473ea8ca3307" xlink:to="loc_us-gaap_Assets_8ac6bd75-cdee-446e-8e42-39342d639017" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3e58657-44ee-49fa-9070-86eb5a2f92ad" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_e15f603f-2072-4b8a-ad2b-473ea8ca3307" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3e58657-44ee-49fa-9070-86eb5a2f92ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_ed3563a2-e048-4db4-8014-391cbc57ebbf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3e58657-44ee-49fa-9070-86eb5a2f92ad" xlink:to="loc_us-gaap_LiabilitiesAbstract_ed3563a2-e048-4db4-8014-391cbc57ebbf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_d497706c-9db9-49ff-87c7-524a768c08e6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_ed3563a2-e048-4db4-8014-391cbc57ebbf" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_d497706c-9db9-49ff-87c7-524a768c08e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_509dcf5d-b1a6-49f8-8b61-16f079b5d3be" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxesPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_ed3563a2-e048-4db4-8014-391cbc57ebbf" xlink:to="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_509dcf5d-b1a6-49f8-8b61-16f079b5d3be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8dd3b88d-47ad-4231-b661-4ce161e5ef28" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_ed3563a2-e048-4db4-8014-391cbc57ebbf" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8dd3b88d-47ad-4231-b661-4ce161e5ef28" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_41d4bbda-9509-44ca-907f-f345b7946bff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_ed3563a2-e048-4db4-8014-391cbc57ebbf" xlink:to="loc_us-gaap_LongTermDebt_41d4bbda-9509-44ca-907f-f345b7946bff" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_e21e1497-0451-4453-b073-2485f7b5c371" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3e58657-44ee-49fa-9070-86eb5a2f92ad" xlink:to="loc_us-gaap_Liabilities_e21e1497-0451-4453-b073-2485f7b5c371" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3e58657-44ee-49fa-9070-86eb5a2f92ad" xlink:to="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_6b623612-7bb5-44b1-8319-cb6bb55868de" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:to="loc_us-gaap_CommonStockValue_6b623612-7bb5-44b1-8319-cb6bb55868de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_37d86985-6ffe-48b3-a8cf-5ea80ac009e1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:to="loc_us-gaap_PreferredStockValue_37d86985-6ffe-48b3-a8cf-5ea80ac009e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_f30f9f16-4d53-420c-8755-fb87e9e01ac8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_f30f9f16-4d53-420c-8755-fb87e9e01ac8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_138f348c-48d4-44d4-a2ee-2f9daae8c394" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_138f348c-48d4-44d4-a2ee-2f9daae8c394" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fbf25071-7b51-405f-9a3a-8494f26b45e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fbf25071-7b51-405f-9a3a-8494f26b45e0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_9a22571a-84fa-498c-a609-eef146e5baa6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityAbstract_11a0119e-1e03-4488-9286-0e0cb81550e1" xlink:to="loc_us-gaap_TreasuryStockValue_9a22571a-84fa-498c-a609-eef146e5baa6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_b2d589c7-07f2-4f06-9126-c03de5b3a158" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3e58657-44ee-49fa-9070-86eb5a2f92ad" xlink:to="loc_us-gaap_StockholdersEquity_b2d589c7-07f2-4f06-9126-c03de5b3a158" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_10f72d2a-4fbb-4754-83dc-0e8f4acdcc73" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_e15f603f-2072-4b8a-ad2b-473ea8ca3307" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_10f72d2a-4fbb-4754-83dc-0e8f4acdcc73" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedBalanceSheetStatementTable_e754bbb8-1516-4209-a26e-e9ba86a4c788" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedBalanceSheetStatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_e15f603f-2072-4b8a-ad2b-473ea8ca3307" xlink:to="loc_srt_CondensedBalanceSheetStatementTable_e754bbb8-1516-4209-a26e-e9ba86a4c788" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_8db785f4-6357-41de-8ff6-5679e6a67dcc" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedBalanceSheetStatementTable_e754bbb8-1516-4209-a26e-e9ba86a4c788" xlink:to="loc_srt_ConsolidatedEntitiesAxis_8db785f4-6357-41de-8ff6-5679e6a67dcc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_8db785f4-6357-41de-8ff6-5679e6a67dcc_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_8db785f4-6357-41de-8ff6-5679e6a67dcc" xlink:to="loc_srt_ConsolidatedEntitiesDomain_8db785f4-6357-41de-8ff6-5679e6a67dcc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_f1915cef-fe46-4728-aef8-2f4bebb85871" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_8db785f4-6357-41de-8ff6-5679e6a67dcc" xlink:to="loc_srt_ConsolidatedEntitiesDomain_f1915cef-fe46-4728-aef8-2f4bebb85871" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_5a2ba9b4-0974-4d1e-bfcd-d9b915f759f7" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_f1915cef-fe46-4728-aef8-2f4bebb85871" xlink:to="loc_srt_ParentCompanyMember_5a2ba9b4-0974-4d1e-bfcd-d9b915f759f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_a397fc50-b9ae-4372-bf82-c0d554e8e7b7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedBalanceSheetStatementTable_e754bbb8-1516-4209-a26e-e9ba86a4c788" xlink:to="loc_us-gaap_StatementClassOfStockAxis_a397fc50-b9ae-4372-bf82-c0d554e8e7b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_a397fc50-b9ae-4372-bf82-c0d554e8e7b7_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_a397fc50-b9ae-4372-bf82-c0d554e8e7b7" xlink:to="loc_us-gaap_ClassOfStockDomain_a397fc50-b9ae-4372-bf82-c0d554e8e7b7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_abf8e973-4faf-491a-8675-6d52aed59716" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_a397fc50-b9ae-4372-bf82-c0d554e8e7b7" xlink:to="loc_us-gaap_ClassOfStockDomain_abf8e973-4faf-491a-8675-6d52aed59716" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_64ed33c0-fd62-4ae9-bc73-cc03727f6915" xlink:href="fnf-20201231.xsd#fnf_FidelityNationalFinancialGroupCommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_abf8e973-4faf-491a-8675-6d52aed59716" xlink:to="loc_fnf_FidelityNationalFinancialGroupCommonStockMember_64ed33c0-fd62-4ae9-bc73-cc03727f6915" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationBalanceSheetParentCompanyParentheticalDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIICondensedFinancialInformationBalanceSheetParentCompanyParentheticalDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationBalanceSheetParentCompanyParentheticalDetails" xlink:type="extended" id="i2e35442a51614fd5bced599230db1075_ScheduleIICondensedFinancialInformationBalanceSheetParentCompanyParentheticalDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedBalanceSheetStatementsCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_eec33c60-ecdb-4c7d-a78f-2de744f5b4a0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_eec33c60-ecdb-4c7d-a78f-2de744f5b4a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_ad3d3878-8367-40f1-a87b-2262f0c460af" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_ad3d3878-8367-40f1-a87b-2262f0c460af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_0abcbdae-f46d-4a85-a4ce-0b29ac8df008" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_0abcbdae-f46d-4a85-a4ce-0b29ac8df008" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_dd28c1ba-bbe3-4562-af01-f7bee1ab1958" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_CommonStockSharesIssued_dd28c1ba-bbe3-4562-af01-f7bee1ab1958" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_7e8313ad-27e6-4e52-8629-2f45c32e1b60" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_7e8313ad-27e6-4e52-8629-2f45c32e1b60" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_d8db63b5-4723-44e1-8a26-990891916b25" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_d8db63b5-4723-44e1-8a26-990891916b25" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_d221e25f-0525-4222-9845-d306692fc324" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_PreferredStockSharesIssued_d221e25f-0525-4222-9845-d306692fc324" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_ef7c6362-d595-4b55-83a2-6e978e2638c3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_ef7c6362-d595-4b55-83a2-6e978e2638c3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockShares_5591004f-daaa-4104-bf4a-3cf0335b0bb3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_us-gaap_TreasuryStockShares_5591004f-daaa-4104-bf4a-3cf0335b0bb3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedBalanceSheetStatementTable_d6b58c4e-24d8-4630-bb72-d1899aaa6e26" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedBalanceSheetStatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_3976632e-35f8-4694-ad33-3bce7578143d" xlink:to="loc_srt_CondensedBalanceSheetStatementTable_d6b58c4e-24d8-4630-bb72-d1899aaa6e26" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_a60fa60f-2e78-44a8-8670-c98370fad4fa" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedBalanceSheetStatementTable_d6b58c4e-24d8-4630-bb72-d1899aaa6e26" xlink:to="loc_srt_ConsolidatedEntitiesAxis_a60fa60f-2e78-44a8-8670-c98370fad4fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_a60fa60f-2e78-44a8-8670-c98370fad4fa_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a60fa60f-2e78-44a8-8670-c98370fad4fa" xlink:to="loc_srt_ConsolidatedEntitiesDomain_a60fa60f-2e78-44a8-8670-c98370fad4fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_fb82c52c-5072-40e1-9433-e92600713fe4" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a60fa60f-2e78-44a8-8670-c98370fad4fa" xlink:to="loc_srt_ConsolidatedEntitiesDomain_fb82c52c-5072-40e1-9433-e92600713fe4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_8be8dd4b-fb29-421b-96a0-7babcac99228" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_fb82c52c-5072-40e1-9433-e92600713fe4" xlink:to="loc_srt_ParentCompanyMember_8be8dd4b-fb29-421b-96a0-7babcac99228" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationStatementofOperationsParentCompanyDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIICondensedFinancialInformationStatementofOperationsParentCompanyDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationStatementofOperationsParentCompanyDetails" xlink:type="extended" id="i3ea853cab36b4061ba7cd3c7d7fd62d8_ScheduleIICondensedFinancialInformationStatementofOperationsParentCompanyDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedIncomeStatementsCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_6341f04f-802f-4e61-b1a1-e6dbcfc6008d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_RevenuesAbstract_6341f04f-802f-4e61-b1a1-e6dbcfc6008d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceCommissionsAndFees_d8c6c7fc-5aee-4ae6-a0ed-fc7912242557" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InsuranceCommissionsAndFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_6341f04f-802f-4e61-b1a1-e6dbcfc6008d" xlink:to="loc_us-gaap_InsuranceCommissionsAndFees_d8c6c7fc-5aee-4ae6-a0ed-fc7912242557" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NetInvestmentIncomeAndGainLossOnInvestments_cd325522-f901-482d-aecd-7bb2773fecbe" xlink:href="fnf-20201231.xsd#fnf_NetInvestmentIncomeAndGainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_6341f04f-802f-4e61-b1a1-e6dbcfc6008d" xlink:to="loc_fnf_NetInvestmentIncomeAndGainLossOnInvestments_cd325522-f901-482d-aecd-7bb2773fecbe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_9287b536-bb59-4bef-b6ed-3a0a889cd932" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_6341f04f-802f-4e61-b1a1-e6dbcfc6008d" xlink:to="loc_us-gaap_GainLossOnInvestments_9287b536-bb59-4bef-b6ed-3a0a889cd932" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_de6734e8-6edb-434b-9fad-738821e5e326" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_6341f04f-802f-4e61-b1a1-e6dbcfc6008d" xlink:to="loc_us-gaap_Revenues_de6734e8-6edb-434b-9fad-738821e5e326" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_2b5ac4b5-4596-4ed4-8333-d5f506abd593" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_2b5ac4b5-4596-4ed4-8333-d5f506abd593" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_0b5daf74-b9ca-46cf-9295-5abba652a5e2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_2b5ac4b5-4596-4ed4-8333-d5f506abd593" xlink:to="loc_us-gaap_LaborAndRelatedExpense_0b5daf74-b9ca-46cf-9295-5abba652a5e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_66314a83-1054-44a7-98fb-ce9b0170fd6d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_2b5ac4b5-4596-4ed4-8333-d5f506abd593" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_66314a83-1054-44a7-98fb-ce9b0170fd6d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_9af050b4-8e8c-4d1b-9af8-925e70e25c5c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_2b5ac4b5-4596-4ed4-8333-d5f506abd593" xlink:to="loc_us-gaap_InterestExpense_9af050b4-8e8c-4d1b-9af8-925e70e25c5c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BenefitsLossesAndExpenses_f991d64e-20c0-4674-833b-359f6ebcc99a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BenefitsLossesAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_2b5ac4b5-4596-4ed4-8333-d5f506abd593" xlink:to="loc_us-gaap_BenefitsLossesAndExpenses_f991d64e-20c0-4674-833b-359f6ebcc99a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_e952eac4-abb9-403a-9da5-3491d5aab1f2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_e952eac4-abb9-403a-9da5-3491d5aab1f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_ab25a033-da32-4965-8170-25960d5dcdef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_ab25a033-da32-4965-8170-25960d5dcdef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncomeLossFromContinuingOperationsBeforeIncomeLossinSubsidiariesNetofIncomeTax_dbeb277a-b8e3-4b26-b970-91d4ab28d435" xlink:href="fnf-20201231.xsd#fnf_IncomeLossFromContinuingOperationsBeforeIncomeLossinSubsidiariesNetofIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_fnf_IncomeLossFromContinuingOperationsBeforeIncomeLossinSubsidiariesNetofIncomeTax_dbeb277a-b8e3-4b26-b970-91d4ab28d435" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncomeLossfromSubsidiariesAndDiscontinuedOperationsNetofTax_6334bf94-0516-4827-ae85-11e54bbd91c3" xlink:href="fnf-20201231.xsd#fnf_IncomeLossfromSubsidiariesAndDiscontinuedOperationsNetofTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_fnf_IncomeLossfromSubsidiariesAndDiscontinuedOperationsNetofTax_6334bf94-0516-4827-ae85-11e54bbd91c3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7b163483-a17b-489b-a9ed-ea33ffd6ff0b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7b163483-a17b-489b-a9ed-ea33ffd6ff0b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_a59e7b14-82d6-4101-9ddb-947b7fc8e1b5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_a59e7b14-82d6-4101-9ddb-947b7fc8e1b5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_ced0c2e9-a869-4056-ae9c-63f32f4efa23" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_NetIncomeLoss_ced0c2e9-a869-4056-ae9c-63f32f4efa23" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_e7e48823-3e74-4c6b-a999-88c644c4d4bb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_e7e48823-3e74-4c6b-a999-88c644c4d4bb" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_59d0c94d-8587-4f19-8a32-2f9b6ce2a251" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_DividendsCommonStockCash_59d0c94d-8587-4f19-8a32-2f9b6ce2a251" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityOther_bfc06973-6a0b-4a1a-8d70-4add8fd82fc0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_us-gaap_StockholdersEquityOther_bfc06973-6a0b-4a1a-8d70-4add8fd82fc0" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_44b452d6-1bbb-4afa-9d3f-8c1906020112" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_d6aed7e6-c595-46f5-b335-e7fd4b90044d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedIncomeStatementTable_9e4f286d-b643-4b3c-a5c0-8c3d45d853cb" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedIncomeStatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_f1b9fcd0-22f4-4025-bd29-6991c4069f85" xlink:to="loc_srt_CondensedIncomeStatementTable_9e4f286d-b643-4b3c-a5c0-8c3d45d853cb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_6223f8cc-47e8-40c6-b346-07db39a95a40" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedIncomeStatementTable_9e4f286d-b643-4b3c-a5c0-8c3d45d853cb" xlink:to="loc_srt_ConsolidatedEntitiesAxis_6223f8cc-47e8-40c6-b346-07db39a95a40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_6223f8cc-47e8-40c6-b346-07db39a95a40_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_6223f8cc-47e8-40c6-b346-07db39a95a40" xlink:to="loc_srt_ConsolidatedEntitiesDomain_6223f8cc-47e8-40c6-b346-07db39a95a40_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_6520df93-1501-4193-96aa-de4cd219d7f7" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_6223f8cc-47e8-40c6-b346-07db39a95a40" xlink:to="loc_srt_ConsolidatedEntitiesDomain_6520df93-1501-4193-96aa-de4cd219d7f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_eb02b86e-cd7e-4839-8fea-cdfa1f9bae84" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_6520df93-1501-4193-96aa-de4cd219d7f7" xlink:to="loc_srt_ParentCompanyMember_eb02b86e-cd7e-4839-8fea-cdfa1f9bae84" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_6c29afee-fec9-4c87-be69-6e48863fd550" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedIncomeStatementTable_9e4f286d-b643-4b3c-a5c0-8c3d45d853cb" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_6c29afee-fec9-4c87-be69-6e48863fd550" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_6c29afee-fec9-4c87-be69-6e48863fd550_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_6c29afee-fec9-4c87-be69-6e48863fd550" xlink:to="loc_us-gaap_EquityComponentDomain_6c29afee-fec9-4c87-be69-6e48863fd550_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_293e8f4e-cc09-45ad-adce-c4181db0bd46" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_6c29afee-fec9-4c87-be69-6e48863fd550" xlink:to="loc_us-gaap_EquityComponentDomain_293e8f4e-cc09-45ad-adce-c4181db0bd46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_a02743d5-4a9a-4316-a1d5-63329b2127dd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_293e8f4e-cc09-45ad-adce-c4181db0bd46" xlink:to="loc_us-gaap_RetainedEarningsMember_a02743d5-4a9a-4316-a1d5-63329b2127dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_6ef116e1-2950-47ff-805c-c3d8087a87e0" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedIncomeStatementTable_9e4f286d-b643-4b3c-a5c0-8c3d45d853cb" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_6ef116e1-2950-47ff-805c-c3d8087a87e0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_6ef116e1-2950-47ff-805c-c3d8087a87e0_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_6ef116e1-2950-47ff-805c-c3d8087a87e0" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_6ef116e1-2950-47ff-805c-c3d8087a87e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_bbdba0e2-d089-4bd3-a99a-1d6f224f0f8c" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_6ef116e1-2950-47ff-805c-c3d8087a87e0" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_bbdba0e2-d089-4bd3-a99a-1d6f224f0f8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember_6b4725ce-132b-406e-974d-53768ad9794c" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_bbdba0e2-d089-4bd3-a99a-1d6f224f0f8c" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember_6b4725ce-132b-406e-974d-53768ad9794c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationStatementofCashFlowParentCompanyDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIICondensedFinancialInformationStatementofCashFlowParentCompanyDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationStatementofCashFlowParentCompanyDetails" xlink:type="extended" id="ib00c3a758ab043209a7b103a2f77021d_ScheduleIICondensedFinancialInformationStatementofCashFlowParentCompanyDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_d86adbfd-ab0e-47e2-b342-93d9951bbc1b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedCashFlowStatementsCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_921808df-96e0-4fc5-8580-ed36bf97d1c4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_d86adbfd-ab0e-47e2-b342-93d9951bbc1b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_921808df-96e0-4fc5-8580-ed36bf97d1c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_a67664f0-3ed2-410e-8a00-7070e37bf9fe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_921808df-96e0-4fc5-8580-ed36bf97d1c4" xlink:to="loc_us-gaap_NetIncomeLoss_a67664f0-3ed2-410e-8a00-7070e37bf9fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_921808df-96e0-4fc5-8580-ed36bf97d1c4" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_0a6d18d7-6199-4a8c-b752-64307d034734" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_0a6d18d7-6199-4a8c-b752-64307d034734" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_4886b5dd-a831-44d4-afd0-b36ea5dbe292" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_4886b5dd-a831-44d4-afd0-b36ea5dbe292" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_fbe36360-3fa2-4d9f-845e-97425dc93304" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_AssetImpairmentCharges_fbe36360-3fa2-4d9f-845e-97425dc93304" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_9af911a9-ec29-48ac-87ac-6901229a1295" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromSubsidiariesNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_9af911a9-ec29-48ac-87ac-6901229a1295" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_1305a560-a08d-4bb7-b559-634d862b9102" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_1305a560-a08d-4bb7-b559-634d862b9102" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_2800a98a-38ce-43ab-824f-d99f8942e53c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_ShareBasedCompensation_2800a98a-38ce-43ab-824f-d99f8942e53c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_e4aefdd2-2023-4e98-b8c7-20b884aec6cd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_e4aefdd2-2023-4e98-b8c7-20b884aec6cd" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_07ce8f0e-9e59-4741-8855-c59520560093" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_07ce8f0e-9e59-4741-8855-c59520560093" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncreaseDecreaseInAccountsPayableAccruedLiabilitiesDeferredRevenueAndOtherOperatingLiabilities_6e3f3797-208b-404d-aa1b-5331495724f3" xlink:href="fnf-20201231.xsd#fnf_IncreaseDecreaseInAccountsPayableAccruedLiabilitiesDeferredRevenueAndOtherOperatingLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_664726c7-3281-46be-ac35-a692822f96eb" xlink:to="loc_fnf_IncreaseDecreaseInAccountsPayableAccruedLiabilitiesDeferredRevenueAndOtherOperatingLiabilities_6e3f3797-208b-404d-aa1b-5331495724f3" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_51de5ef2-a083-4f6f-bd26-be9436f2a394" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_921808df-96e0-4fc5-8580-ed36bf97d1c4" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_51de5ef2-a083-4f6f-bd26-be9436f2a394" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_d86adbfd-ab0e-47e2-b342-93d9951bbc1b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_cee7e074-9792-46f7-8607-2cd853e33f33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_cee7e074-9792-46f7-8607-2cd853e33f33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromShortTermInvestments_b203cd27-b158-4a11-a2c9-345986995658" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForProceedsFromShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_PaymentsForProceedsFromShortTermInvestments_b203cd27-b158-4a11-a2c9-345986995658" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_f2ac3a5b-0e1a-41e9-997f-95986f752752" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_f2ac3a5b-0e1a-41e9-997f-95986f752752" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireNotesReceivable_26f061b1-4538-4b00-83eb-22c71dd3c9b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireNotesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_PaymentsToAcquireNotesReceivable_26f061b1-4538-4b00-83eb-22c71dd3c9b4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromCollectionOfNotesReceivable_09b4dcd3-04ce-4df0-a2fb-8f19a3290b5a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromCollectionOfNotesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_ProceedsFromCollectionOfNotesReceivable_09b4dcd3-04ce-4df0-a2fb-8f19a3290b5a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_73da34ad-a409-4474-810c-b6ac419830a4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_73da34ad-a409-4474-810c-b6ac419830a4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_9c40e2fe-6565-460b-9b40-b19b9dec3ae6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_9c40e2fe-6565-460b-9b40-b19b9dec3ae6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_45bbe64a-5b32-4a8f-948f-a30c2104c94c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6b58ee2a-b634-4a84-bc87-4626196b9581" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_45bbe64a-5b32-4a8f-948f-a30c2104c94c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_d86adbfd-ab0e-47e2-b342-93d9951bbc1b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_4ada2f11-0780-4b10-bc03-78ea88e4ab6a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_4ada2f11-0780-4b10-bc03-78ea88e4ab6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_dcb3d5f9-5953-4fba-ab01-b956060e7520" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_dcb3d5f9-5953-4fba-ab01-b956060e7520" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_d72893e4-b766-4b02-b52c-06734640d52a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDebtExtinguishmentCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_d72893e4-b766-4b02-b52c-06734640d52a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_0ec49c13-7297-4d25-a9f6-af7995c7210b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_0ec49c13-7297-4d25-a9f6-af7995c7210b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_0221b58e-6c72-49ef-bb61-8614d6405f1d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_0221b58e-6c72-49ef-bb61-8614d6405f1d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_56f6eaac-5e39-42f0-95d2-59d36b710d1f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_56f6eaac-5e39-42f0-95d2-59d36b710d1f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_b9bfb5f1-80c6-405a-af34-b18f5d397cff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_b9bfb5f1-80c6-405a-af34-b18f5d397cff" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_87ff6ce1-f7a0-4800-9bdd-9cb5ed76b586" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_87ff6ce1-f7a0-4800-9bdd-9cb5ed76b586" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToMinorityShareholders_a823f91a-413d-40b7-b406-3e161b619602" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToMinorityShareholders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_PaymentsToMinorityShareholders_a823f91a-413d-40b7-b406-3e161b619602" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_243fad99-46f4-4ce9-896e-026ac162ade2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_243fad99-46f4-4ce9-896e-026ac162ade2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ProceedsFromDividendsFromSubsidiaries_02fcbaae-0b5d-4fb5-a887-58ab38e1bc30" xlink:href="fnf-20201231.xsd#fnf_ProceedsFromDividendsFromSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_fnf_ProceedsFromDividendsFromSubsidiaries_02fcbaae-0b5d-4fb5-a887-58ab38e1bc30" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_e3dcf76a-8a30-41ee-a1b2-9078250bfc9e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b3acb6a2-6dc9-450e-b157-e2e0fc40f246" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_e3dcf76a-8a30-41ee-a1b2-9078250bfc9e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_77959410-8b42-43c8-b732-444c866bc8a5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_d86adbfd-ab0e-47e2-b342-93d9951bbc1b" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_77959410-8b42-43c8-b732-444c866bc8a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b6a4430c-cd0d-4c29-abef-c626e4edab16" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_d86adbfd-ab0e-47e2-b342-93d9951bbc1b" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b6a4430c-cd0d-4c29-abef-c626e4edab16" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_bcf2bcf0-0ab3-422f-a6a1-36e77f3b962f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedCashFlowStatementTable_7cf95958-f288-4f30-97b9-bd7bd717f016" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CondensedCashFlowStatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_d86adbfd-ab0e-47e2-b342-93d9951bbc1b" xlink:to="loc_srt_CondensedCashFlowStatementTable_7cf95958-f288-4f30-97b9-bd7bd717f016" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_a23ab78a-5445-401e-8a7c-ea7ce31e5436" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedCashFlowStatementTable_7cf95958-f288-4f30-97b9-bd7bd717f016" xlink:to="loc_srt_ConsolidatedEntitiesAxis_a23ab78a-5445-401e-8a7c-ea7ce31e5436" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_a23ab78a-5445-401e-8a7c-ea7ce31e5436_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a23ab78a-5445-401e-8a7c-ea7ce31e5436" xlink:to="loc_srt_ConsolidatedEntitiesDomain_a23ab78a-5445-401e-8a7c-ea7ce31e5436_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_7b1f8581-544c-4d48-b401-1793bdad6209" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a23ab78a-5445-401e-8a7c-ea7ce31e5436" xlink:to="loc_srt_ConsolidatedEntitiesDomain_7b1f8581-544c-4d48-b401-1793bdad6209" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_4f98f3b9-92e8-407a-87c8-c21f04188db1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_7b1f8581-544c-4d48-b401-1793bdad6209" xlink:to="loc_srt_ParentCompanyMember_4f98f3b9-92e8-407a-87c8-c21f04188db1" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationNotestoFinancialStatementsParentCompanyDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIICondensedFinancialInformationNotestoFinancialStatementsParentCompanyDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIICondensedFinancialInformationNotestoFinancialStatementsParentCompanyDetails" xlink:type="extended" id="i7b61ef7e8fab4c198f6178dd947bc670_ScheduleIICondensedFinancialInformationNotestoFinancialStatementsParentCompanyDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_d8539095-17b1-4c7b-9794-cd035be03e10" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_15f02e54-c65c-4982-b6d0-02f9eed76dc5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8539095-17b1-4c7b-9794-cd035be03e10" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_15f02e54-c65c-4982-b6d0-02f9eed76dc5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_926a7c79-1d1e-48e2-b42f-73545ae62689" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8539095-17b1-4c7b-9794-cd035be03e10" xlink:to="loc_us-gaap_LongTermDebt_926a7c79-1d1e-48e2-b42f-73545ae62689" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_ea97de76-d2ca-4b35-8d29-0e5c58ee34e2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8539095-17b1-4c7b-9794-cd035be03e10" xlink:to="loc_us-gaap_InterestPaidNet_ea97de76-d2ca-4b35-8d29-0e5c58ee34e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_a2cc16fd-1359-4ffd-9acb-fc82f1d92817" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8539095-17b1-4c7b-9794-cd035be03e10" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_a2cc16fd-1359-4ffd-9acb-fc82f1d92817" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashDividendsPaidToParentCompany_bce93af0-1e85-4f6b-969a-38266b5146a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashDividendsPaidToParentCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8539095-17b1-4c7b-9794-cd035be03e10" xlink:to="loc_us-gaap_CashDividendsPaidToParentCompany_bce93af0-1e85-4f6b-969a-38266b5146a7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_c2093781-e42d-42fa-9a47-c867c1767e51" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8539095-17b1-4c7b-9794-cd035be03e10" xlink:to="loc_us-gaap_DebtInstrumentTable_c2093781-e42d-42fa-9a47-c867c1767e51" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_9f07ec96-cf4a-4044-8f87-74ec1fd8550d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c2093781-e42d-42fa-9a47-c867c1767e51" xlink:to="loc_srt_ConsolidatedEntitiesAxis_9f07ec96-cf4a-4044-8f87-74ec1fd8550d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_9f07ec96-cf4a-4044-8f87-74ec1fd8550d_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_9f07ec96-cf4a-4044-8f87-74ec1fd8550d" xlink:to="loc_srt_ConsolidatedEntitiesDomain_9f07ec96-cf4a-4044-8f87-74ec1fd8550d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_d90e886b-ee85-4719-9c50-9afd83df67f6" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_9f07ec96-cf4a-4044-8f87-74ec1fd8550d" xlink:to="loc_srt_ConsolidatedEntitiesDomain_d90e886b-ee85-4719-9c50-9afd83df67f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_48220190-3bc6-48f9-b5d6-d01c619aadac" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_d90e886b-ee85-4719-9c50-9afd83df67f6" xlink:to="loc_srt_ParentCompanyMember_48220190-3bc6-48f9-b5d6-d01c619aadac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_f7931647-5e9a-40e9-8e49-3a30667296ab" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c2093781-e42d-42fa-9a47-c867c1767e51" xlink:to="loc_us-gaap_CreditFacilityAxis_f7931647-5e9a-40e9-8e49-3a30667296ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_f7931647-5e9a-40e9-8e49-3a30667296ab_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_f7931647-5e9a-40e9-8e49-3a30667296ab" xlink:to="loc_us-gaap_CreditFacilityDomain_f7931647-5e9a-40e9-8e49-3a30667296ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_acc97e56-6bed-4a43-b48f-220f2e506280" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_f7931647-5e9a-40e9-8e49-3a30667296ab" xlink:to="loc_us-gaap_CreditFacilityDomain_acc97e56-6bed-4a43-b48f-220f2e506280" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_e987672b-760b-4466-80f9-7c99c49d6131" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_acc97e56-6bed-4a43-b48f-220f2e506280" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_e987672b-760b-4466-80f9-7c99c49d6131" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_fc87b0e5-3a39-49fd-8c02-dc823714ef03" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c2093781-e42d-42fa-9a47-c867c1767e51" xlink:to="loc_us-gaap_DebtInstrumentAxis_fc87b0e5-3a39-49fd-8c02-dc823714ef03" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_fc87b0e5-3a39-49fd-8c02-dc823714ef03_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_fc87b0e5-3a39-49fd-8c02-dc823714ef03" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_fc87b0e5-3a39-49fd-8c02-dc823714ef03_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7be5964a-6fd5-411c-8773-0cc8822c5e0a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_fc87b0e5-3a39-49fd-8c02-dc823714ef03" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7be5964a-6fd5-411c-8773-0cc8822c5e0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_44220525-0bd3-417d-8724-3940fdafe2dd" xlink:href="fnf-20201231.xsd#fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7be5964a-6fd5-411c-8773-0cc8822c5e0a" xlink:to="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_44220525-0bd3-417d-8724-3940fdafe2dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_8b3bf87f-9c74-4d45-8700-7f4f071342f4" xlink:href="fnf-20201231.xsd#fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7be5964a-6fd5-411c-8773-0cc8822c5e0a" xlink:to="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_8b3bf87f-9c74-4d45-8700-7f4f071342f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member_37c2ba76-bce5-4150-9c02-8742f9b21f41" xlink:href="fnf-20201231.xsd#fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7be5964a-6fd5-411c-8773-0cc8822c5e0a" xlink:to="loc_fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member_37c2ba76-bce5-4150-9c02-8742f9b21f41" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_Notes245Member_32a92e8a-f299-4b6d-9025-4c3d57ee034f" xlink:href="fnf-20201231.xsd#fnf_Notes245Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7be5964a-6fd5-411c-8773-0cc8822c5e0a" xlink:to="loc_fnf_Notes245Member_32a92e8a-f299-4b6d-9025-4c3d57ee034f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RevolvingCreditFacilityDueApril2022Member_15d5fd27-9be6-4c22-ae96-fe819ff8ee65" xlink:href="fnf-20201231.xsd#fnf_RevolvingCreditFacilityDueApril2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7be5964a-6fd5-411c-8773-0cc8822c5e0a" xlink:to="loc_fnf_RevolvingCreditFacilityDueApril2022Member_15d5fd27-9be6-4c22-ae96-fe819ff8ee65" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIIISupplementaryInsuranceInformation" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIIISupplementaryInsuranceInformation"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIIISupplementaryInsuranceInformation" xlink:type="extended" id="i96069cb357a14aa196a4267f95e988e8_ScheduleIIISupplementaryInsuranceInformation"/>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIIISupplementaryInsuranceInformationDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIIISupplementaryInsuranceInformationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIIISupplementaryInsuranceInformationDetails" xlink:type="extended" id="i2f1467fc613f4126a0bda38f21398627_ScheduleIIISupplementaryInsuranceInformationDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIVReinsurance" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIVReinsurance"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIVReinsurance" xlink:type="extended" id="i44d7eddefab04b559abd2e654be016f5_ScheduleIVReinsurance"/>
  <link:roleRef roleURI="http://www.fnf.com/role/ScheduleIVReinsuranceDetails" xlink:type="simple" xlink:href="fnf-20201231.xsd#ScheduleIVReinsuranceDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/ScheduleIVReinsuranceDetails" xlink:type="extended" id="ibfbda40dfa154fe6af6cfd6da531c8ad_ScheduleIVReinsuranceDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems_02548fc0-2049-4db2-b34d-9bd745070e8b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LifeInsuranceInForceNetAbstract_f79e9cb5-5c97-4d6e-83d5-70251e5593d0" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LifeInsuranceInForceNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems_02548fc0-2049-4db2-b34d-9bd745070e8b" xlink:to="loc_srt_LifeInsuranceInForceNetAbstract_f79e9cb5-5c97-4d6e-83d5-70251e5593d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LifeInsuranceInForceGross_e2633e9e-9856-41ec-bfa2-81cd7201cc34" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LifeInsuranceInForceGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LifeInsuranceInForceNetAbstract_f79e9cb5-5c97-4d6e-83d5-70251e5593d0" xlink:to="loc_srt_LifeInsuranceInForceGross_e2633e9e-9856-41ec-bfa2-81cd7201cc34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LifeInsuranceInForceCeded_331bca4e-2863-4b38-92f0-717a8f9c57aa" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LifeInsuranceInForceCeded"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LifeInsuranceInForceNetAbstract_f79e9cb5-5c97-4d6e-83d5-70251e5593d0" xlink:to="loc_srt_LifeInsuranceInForceCeded_331bca4e-2863-4b38-92f0-717a8f9c57aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LifeInsuranceInForceAssumed_6a7be9a7-45ce-448a-86a1-8569e7107d12" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LifeInsuranceInForceAssumed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LifeInsuranceInForceNetAbstract_f79e9cb5-5c97-4d6e-83d5-70251e5593d0" xlink:to="loc_srt_LifeInsuranceInForceAssumed_6a7be9a7-45ce-448a-86a1-8569e7107d12" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LifeInsuranceInForceNet_a3947a91-ffc0-480f-b3f1-e4aa07312cc3" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LifeInsuranceInForceNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LifeInsuranceInForceNetAbstract_f79e9cb5-5c97-4d6e-83d5-70251e5593d0" xlink:to="loc_srt_LifeInsuranceInForceNet_a3947a91-ffc0-480f-b3f1-e4aa07312cc3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LifeInsuranceInForcePercentageAssumedToNet_4772c18b-3498-4ffd-b43f-8ad1bdf929a6" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LifeInsuranceInForcePercentageAssumedToNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LifeInsuranceInForceNetAbstract_f79e9cb5-5c97-4d6e-83d5-70251e5593d0" xlink:to="loc_srt_LifeInsuranceInForcePercentageAssumedToNet_4772c18b-3498-4ffd-b43f-8ad1bdf929a6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_5a444705-8765-497f-9b58-cd2c792bc683" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems_02548fc0-2049-4db2-b34d-9bd745070e8b" xlink:to="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_5a444705-8765-497f-9b58-cd2c792bc683" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectPremiumsEarned_1b715b35-879f-4f66-a5b8-da703f127d05" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DirectPremiumsEarned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_5a444705-8765-497f-9b58-cd2c792bc683" xlink:to="loc_us-gaap_DirectPremiumsEarned_1b715b35-879f-4f66-a5b8-da703f127d05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededPremiumsEarned_bc79f43b-bcb8-4a6b-a0bd-eadc3f8e3834" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CededPremiumsEarned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_5a444705-8765-497f-9b58-cd2c792bc683" xlink:to="loc_us-gaap_CededPremiumsEarned_bc79f43b-bcb8-4a6b-a0bd-eadc3f8e3834" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumedPremiumsEarned_42b190f3-5959-4b75-a098-ba763eff50d6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssumedPremiumsEarned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_5a444705-8765-497f-9b58-cd2c792bc683" xlink:to="loc_us-gaap_AssumedPremiumsEarned_42b190f3-5959-4b75-a098-ba763eff50d6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PremiumsEarnedNet_b72cb441-8db4-4ddc-b6c6-9a86a606c00c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PremiumsEarnedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_5a444705-8765-497f-9b58-cd2c792bc683" xlink:to="loc_us-gaap_PremiumsEarnedNet_b72cb441-8db4-4ddc-b6c6-9a86a606c00c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PremiumsPercentageAssumedToNet_44399684-640d-4f92-96f4-be64d5e80f1a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PremiumsPercentageAssumedToNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_5a444705-8765-497f-9b58-cd2c792bc683" xlink:to="loc_us-gaap_PremiumsPercentageAssumedToNet_44399684-640d-4f92-96f4-be64d5e80f1a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable_1930bc4b-ec38-43b6-a092-c908ac659435" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems_02548fc0-2049-4db2-b34d-9bd745070e8b" xlink:to="loc_srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable_1930bc4b-ec38-43b6-a092-c908ac659435" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_f48d940b-0193-4d98-a8e6-be7c9d9b2f1c" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable_1930bc4b-ec38-43b6-a092-c908ac659435" xlink:to="loc_srt_ProductOrServiceAxis_f48d940b-0193-4d98-a8e6-be7c9d9b2f1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f48d940b-0193-4d98-a8e6-be7c9d9b2f1c_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_f48d940b-0193-4d98-a8e6-be7c9d9b2f1c" xlink:to="loc_srt_ProductsAndServicesDomain_f48d940b-0193-4d98-a8e6-be7c9d9b2f1c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a26e3ec8-1296-4ec5-8f36-83e6d5d3601b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_f48d940b-0193-4d98-a8e6-be7c9d9b2f1c" xlink:to="loc_srt_ProductsAndServicesDomain_a26e3ec8-1296-4ec5-8f36-83e6d5d3601b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeInsuranceSegmentMember_cc50ddf9-cf34-45d3-bed9-d6d18db9ad2c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LifeInsuranceSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a26e3ec8-1296-4ec5-8f36-83e6d5d3601b" xlink:to="loc_us-gaap_LifeInsuranceSegmentMember_cc50ddf9-cf34-45d3-bed9-d6d18db9ad2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsSegmentMember_7a46f44a-5292-430c-a1bd-20d7c51b8da1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a26e3ec8-1296-4ec5-8f36-83e6d5d3601b" xlink:to="loc_us-gaap_InvestmentsSegmentMember_7a46f44a-5292-430c-a1bd-20d7c51b8da1" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/RecentAccountingPronouncements" xlink:type="simple" xlink:href="fnf-20201231.xsd#RecentAccountingPronouncements"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RecentAccountingPronouncements" xlink:type="extended" id="i4e359a7d7b214ce58aa25b99883eb8e3_RecentAccountingPronouncements"/>
</link:linkbase>
