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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2020 Workiva-->
<!--r:31165876-3c7e-4f37-82a9-e6be590d7eb5,g:2ced1611-4096-4447-a430-8acd1ec532dd-->
<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-20200630.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Cover" xlink:type="extended" id="idef2d8753b12488287282972c325b135_Cover">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_962a5df6-3ab6-4fc3-976f-1bbaf6d98807" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_DocumentType_962a5df6-3ab6-4fc3-976f-1bbaf6d98807" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_a823075a-1b12-4280-b0b8-3880b3e06b5a" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_DocumentQuarterlyReport_a823075a-1b12-4280-b0b8-3880b3e06b5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_904129fb-7127-4edb-99be-fd1882aa9ae2" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_DocumentPeriodEndDate_904129fb-7127-4edb-99be-fd1882aa9ae2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_60e9c6de-129d-4758-b701-d30af072e8c0" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_DocumentTransitionReport_60e9c6de-129d-4758-b701-d30af072e8c0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_efda6b46-87e6-4e1c-976a-965840f4c6f9" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityFileNumber_efda6b46-87e6-4e1c-976a-965840f4c6f9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_47b68299-5c79-4578-acd0-ba9c10de9397" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityRegistrantName_47b68299-5c79-4578-acd0-ba9c10de9397" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_d82b62ac-8e10-457d-9c4a-900e602b8752" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityIncorporationStateCountryCode_d82b62ac-8e10-457d-9c4a-900e602b8752" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_b13c99f5-aae0-4f90-8048-63038574788f" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityTaxIdentificationNumber_b13c99f5-aae0-4f90-8048-63038574788f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_0b2bda57-ebde-4b02-a92b-2b548f4ea1f8" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityAddressAddressLine1_0b2bda57-ebde-4b02-a92b-2b548f4ea1f8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_267f75c0-e13d-41ce-bf58-1f43bdc7c4ef" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityAddressCityOrTown_267f75c0-e13d-41ce-bf58-1f43bdc7c4ef" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_301c4e0a-712f-4f12-8dd0-55d867f7b737" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityAddressStateOrProvince_301c4e0a-712f-4f12-8dd0-55d867f7b737" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_9b7dd41c-82da-4278-9701-30c58508fae2" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityAddressPostalZipCode_9b7dd41c-82da-4278-9701-30c58508fae2" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_2bb07b6c-61e5-4aa2-bd4a-36c2660524ad" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_CityAreaCode_2bb07b6c-61e5-4aa2-bd4a-36c2660524ad" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_e9a95053-ac00-4dcd-b92d-7e153afab9d1" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_LocalPhoneNumber_e9a95053-ac00-4dcd-b92d-7e153afab9d1" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_4b7a7747-9129-49fa-8e1e-853ccb16a0a9" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_Security12bTitle_4b7a7747-9129-49fa-8e1e-853ccb16a0a9" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_fc674c49-a532-4fd2-b41b-c2e20f95ab3f" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_TradingSymbol_fc674c49-a532-4fd2-b41b-c2e20f95ab3f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_3a81f216-4b89-4ab6-bc24-bab5c389929d" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_SecurityExchangeName_3a81f216-4b89-4ab6-bc24-bab5c389929d" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_7e85862e-ccf3-4372-8f25-f0c5c7718fb2" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityCurrentReportingStatus_7e85862e-ccf3-4372-8f25-f0c5c7718fb2" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_3da1f415-9c17-4941-8dcc-ab1a00778213" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityInteractiveDataCurrent_3da1f415-9c17-4941-8dcc-ab1a00778213" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_441ac041-2a94-4df0-8b9a-fd64e6037aeb" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityFilerCategory_441ac041-2a94-4df0-8b9a-fd64e6037aeb" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_b136fb2c-4b0f-4847-bc97-1ae4ca1d6f86" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntitySmallBusiness_b136fb2c-4b0f-4847-bc97-1ae4ca1d6f86" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_3d592199-7bf6-43fb-b110-ede29053eba3" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityEmergingGrowthCompany_3d592199-7bf6-43fb-b110-ede29053eba3" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_0d957aae-4625-47d9-9661-de8ec597f410" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityShellCompany_0d957aae-4625-47d9-9661-de8ec597f410" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_11743eb6-92fd-48c5-955f-10d3844646a7" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_11743eb6-92fd-48c5-955f-10d3844646a7" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_22ade574-63df-4d73-a7d3-d25f386700e0" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_AmendmentFlag_22ade574-63df-4d73-a7d3-d25f386700e0" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_63d814d9-fe5e-4630-91e6-039154c2f16c" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_DocumentFiscalYearFocus_63d814d9-fe5e-4630-91e6-039154c2f16c" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_e2f57841-6333-4715-aba5-5e8d68a1ef03" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_DocumentFiscalPeriodFocus_e2f57841-6333-4715-aba5-5e8d68a1ef03" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_8a92c0bd-54cc-41f6-adcf-7f8425b931f2" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_EntityCentralIndexKey_8a92c0bd-54cc-41f6-adcf-7f8425b931f2" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_ae52c1ea-084f-4c8e-a82b-90a3b2f6055c" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_CurrentFiscalYearEndDate_ae52c1ea-084f-4c8e-a82b-90a3b2f6055c" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_936481d6-fb55-451e-b10b-0948ede6001e" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_d3c3213f-65e6-4fda-b162-3fd7ccf2205b" xlink:to="loc_dei_DocumentInformationTable_936481d6-fb55-451e-b10b-0948ede6001e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_f6b4510d-969a-4d0b-8a00-c00318fc4151" 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_936481d6-fb55-451e-b10b-0948ede6001e" xlink:to="loc_us-gaap_StatementClassOfStockAxis_f6b4510d-969a-4d0b-8a00-c00318fc4151" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_f6b4510d-969a-4d0b-8a00-c00318fc4151_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_f6b4510d-969a-4d0b-8a00-c00318fc4151" xlink:to="loc_us-gaap_ClassOfStockDomain_f6b4510d-969a-4d0b-8a00-c00318fc4151_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_907a3b80-44de-4665-bf94-22e15b182fe7" 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_f6b4510d-969a-4d0b-8a00-c00318fc4151" xlink:to="loc_us-gaap_ClassOfStockDomain_907a3b80-44de-4665-bf94-22e15b182fe7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_5a640f19-5713-4ccc-895c-6eda4f913db3" 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_907a3b80-44de-4665-bf94-22e15b182fe7" xlink:to="loc_us-gaap_CommonStockMember_5a640f19-5713-4ccc-895c-6eda4f913db3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_5a042946-9d84-417f-ba23-769ebb034641" xlink:href="fnf-20200630.xsd#fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_907a3b80-44de-4665-bf94-22e15b182fe7" xlink:to="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_5a042946-9d84-417f-ba23-769ebb034641" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended" id="i645172d07cd34246acf6f75206b2c0c9_CONDENSEDCONSOLIDATEDBALANCESHEETS">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_8a1b0b72-9928-4252-a924-be78b9b73596" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" 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_8a1b0b72-9928-4252-a924-be78b9b73596" xlink:to="loc_us-gaap_AssetsAbstract_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsAbstract_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_InvestmentsAbstract_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradingSecuritiesDebt_3d0ff965-d584-400a-a6a1-6fef6ae042f8" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_TradingSecuritiesDebt_3d0ff965-d584-400a-a6a1-6fef6ae042f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_731f61f5-300c-4bbc-985c-46c1be76eaef" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_731f61f5-300c-4bbc-985c-46c1be76eaef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_1e0512c8-9643-4acb-8682-d07bea5aefd0" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_DerivativeAssets_1e0512c8-9643-4acb-8682-d07bea5aefd0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_89ac4ccd-b73f-4658-af50-5b6703654a25" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_NotesReceivableNet_89ac4ccd-b73f-4658-af50-5b6703654a25" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_9a94f5cc-e9d0-4b51-9d03-a3a018c9e137" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_EquityMethodInvestments_9a94f5cc-e9d0-4b51-9d03-a3a018c9e137" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermInvestments_939d7ce3-12de-465f-a3de-b4ccd482ac02" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_OtherLongTermInvestments_939d7ce3-12de-465f-a3de-b4ccd482ac02" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermInvestments_d1eef5a0-bca8-4c76-9566-10d2ec894da8" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_OtherShortTermInvestments_d1eef5a0-bca8-4c76-9566-10d2ec894da8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_f06a6962-2d0e-413e-b798-2139df63974b" 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_3c3e1b6a-cfea-40fc-9fdb-3052cbd0240a" xlink:to="loc_us-gaap_Investments_f06a6962-2d0e-413e-b798-2139df63974b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_3d81b574-a585-4f4e-848f-670017af819f" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_3d81b574-a585-4f4e-848f-670017af819f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_05743a00-c684-4cbe-8e83-c24d4e4fa1d4" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_05743a00-c684-4cbe-8e83-c24d4e4fa1d4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceRecoverables_45df0cd4-e74a-4242-a23f-c1debb374691" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_ReinsuranceRecoverables_45df0cd4-e74a-4242-a23f-c1debb374691" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_85bc0fee-1608-4f63-a631-e1e7a77c96ee" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_Goodwill_85bc0fee-1608-4f63-a631-e1e7a77c96ee" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_65efe47a-9de7-46cd-a8af-01e93fbda4ae" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_65efe47a-9de7-46cd-a8af-01e93fbda4ae" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_38544d10-6ec8-42c9-a40c-6be64305e5db" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_38544d10-6ec8-42c9-a40c-6be64305e5db" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IntangibleAssetsNetExcludingGoodwillandTitlePlants_db6d598b-f7a1-4462-9c16-f76ddc057c3f" xlink:href="fnf-20200630.xsd#fnf_IntangibleAssetsNetExcludingGoodwillandTitlePlants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_fnf_IntangibleAssetsNetExcludingGoodwillandTitlePlants_db6d598b-f7a1-4462-9c16-f76ddc057c3f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IntangibleAssetsTitlePlants_79a94240-0a21-402a-bce7-183193e181d6" xlink:href="fnf-20200630.xsd#fnf_IntangibleAssetsTitlePlants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_fnf_IntangibleAssetsTitlePlants_79a94240-0a21-402a-bce7-183193e181d6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_2838aa23-47fa-4507-8b34-e6862e32a653" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_2838aa23-47fa-4507-8b34-e6862e32a653" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_c43dab62-1b7e-4fe0-b2a8-846c6e9e6ab0" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_c43dab62-1b7e-4fe0-b2a8-846c6e9e6ab0" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_79bd736f-e92a-4d1e-8817-df7128d0b9b1" 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_3a161b17-dc32-4d39-ad1c-3cc499c16a33" xlink:to="loc_us-gaap_Assets_79bd736f-e92a-4d1e-8817-df7128d0b9b1" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_0b6f984b-798d-4693-90d2-ed1ab3305ee0" 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_8a1b0b72-9928-4252-a924-be78b9b73596" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_0b6f984b-798d-4693-90d2-ed1ab3305ee0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_7402caac-4aca-4b52-96a3-61158c01abe9" 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_0b6f984b-798d-4693-90d2-ed1ab3305ee0" xlink:to="loc_us-gaap_LiabilitiesAbstract_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderFunds_51e3b16a-4db8-47bf-8023-dbd812ecc00e" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_PolicyholderFunds_51e3b16a-4db8-47bf-8023-dbd812ecc00e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefits_ac1137cd-4edc-4af7-a162-cf98f5e753a1" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefits_ac1137cd-4edc-4af7-a162-cf98f5e753a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_c02438ae-9944-4c39-bd9d-9e375c4e7d54" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_c02438ae-9944-4c39-bd9d-9e375c4e7d54" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_b9bfe17f-df32-40e9-9b69-bb65b42befc6" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_LongTermDebt_b9bfe17f-df32-40e9-9b69-bb65b42befc6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_69ee97a6-3761-4440-bae1-ba429d2133ab" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_69ee97a6-3761-4440-bae1-ba429d2133ab" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsLiability_664c7a83-714e-495d-8e4d-8356cd4039a5" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_FundsHeldUnderReinsuranceAgreementsLiability_664c7a83-714e-495d-8e4d-8356cd4039a5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ContractWithCustomerLiabilityCustomerDeposits_7faff479-6bf5-4080-acb6-a041f668d5b5" xlink:href="fnf-20200630.xsd#fnf_ContractWithCustomerLiabilityCustomerDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_fnf_ContractWithCustomerLiabilityCustomerDeposits_7faff479-6bf5-4080-acb6-a041f668d5b5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_a5af6acd-bed5-4c08-92db-c1be30b002e7" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_OperatingLeaseLiability_a5af6acd-bed5-4c08-92db-c1be30b002e7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_51b72221-507d-484d-8b0c-3e7fa3c2211c" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_51b72221-507d-484d-8b0c-3e7fa3c2211c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_d087946d-ad22-4e4d-852f-17b47d1cb4cb" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_d087946d-ad22-4e4d-852f-17b47d1cb4cb" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cf7dc201-9e50-44f4-a159-02dd5098c9ae" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cf7dc201-9e50-44f4-a159-02dd5098c9ae" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_25f820a2-68d8-41b3-8c8d-e31f0c758e9f" 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_7402caac-4aca-4b52-96a3-61158c01abe9" xlink:to="loc_us-gaap_Liabilities_25f820a2-68d8-41b3-8c8d-e31f0c758e9f" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_33201c39-c942-4f82-9006-b5a0272c71ec" 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_0b6f984b-798d-4693-90d2-ed1ab3305ee0" xlink:to="loc_us-gaap_CommitmentsAndContingencies_33201c39-c942-4f82-9006-b5a0272c71ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_9f88904d-871b-4c1b-a400-c302d5c73848" 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_0b6f984b-798d-4693-90d2-ed1ab3305ee0" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_9f88904d-871b-4c1b-a400-c302d5c73848" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_5dfc8187-7763-453b-8669-7170ee4c9fef" 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_0b6f984b-798d-4693-90d2-ed1ab3305ee0" xlink:to="loc_us-gaap_StockholdersEquityAbstract_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_fcbab264-e361-4ee5-8d9b-4d8cf4cf96b5" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_CommonStockValue_fcbab264-e361-4ee5-8d9b-4d8cf4cf96b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_e7ad0c7c-3c40-4806-9820-e8c1d5f007cb" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_PreferredStockValue_e7ad0c7c-3c40-4806-9820-e8c1d5f007cb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_2ca9ada3-8740-45eb-a7c6-4d770a4ece0f" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_2ca9ada3-8740-45eb-a7c6-4d770a4ece0f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_079b4264-3748-4d0f-a952-c000d0923a4a" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_079b4264-3748-4d0f-a952-c000d0923a4a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_3923af1d-622c-4f26-a587-8121c3bc47a7" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_3923af1d-622c-4f26-a587-8121c3bc47a7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_2b30280d-dbef-4b33-9ce4-a627eec64099" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_TreasuryStockValue_2b30280d-dbef-4b33-9ce4-a627eec64099" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_392aff27-7791-4db7-8766-b195b3f6cd48" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_StockholdersEquity_392aff27-7791-4db7-8766-b195b3f6cd48" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_769f9e3a-b2cd-40f5-a0b2-707f715faa74" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_MinorityInterest_769f9e3a-b2cd-40f5-a0b2-707f715faa74" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_c6144a81-9593-4262-83a7-707a436b028a" 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_5dfc8187-7763-453b-8669-7170ee4c9fef" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_c6144a81-9593-4262-83a7-707a436b028a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_f2032ab8-55c4-46b4-ac7e-c84a50dd1da7" 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_0b6f984b-798d-4693-90d2-ed1ab3305ee0" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_f2032ab8-55c4-46b4-ac7e-c84a50dd1da7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_c61cd460-9866-45f4-9416-cb5324244808" 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_8a1b0b72-9928-4252-a924-be78b9b73596" xlink:to="loc_us-gaap_StatementTable_c61cd460-9866-45f4-9416-cb5324244808" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_4fd71086-f47c-4ac5-94d9-6e95e5e341e1" 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_c61cd460-9866-45f4-9416-cb5324244808" xlink:to="loc_us-gaap_FinancialInstrumentAxis_4fd71086-f47c-4ac5-94d9-6e95e5e341e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4fd71086-f47c-4ac5-94d9-6e95e5e341e1_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_4fd71086-f47c-4ac5-94d9-6e95e5e341e1" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4fd71086-f47c-4ac5-94d9-6e95e5e341e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_1b9ab3f2-af2d-4202-acf5-5506fdcf66fc" 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_4fd71086-f47c-4ac5-94d9-6e95e5e341e1" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_1b9ab3f2-af2d-4202-acf5-5506fdcf66fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_0ba39c99-37a9-4f0d-a6c2-b68c9f612140" 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_1b9ab3f2-af2d-4202-acf5-5506fdcf66fc" xlink:to="loc_us-gaap_PreferredStockMember_0ba39c99-37a9-4f0d-a6c2-b68c9f612140" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_e7fc9eee-7533-439c-8a9f-0ffbfc058f91" 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_1b9ab3f2-af2d-4202-acf5-5506fdcf66fc" xlink:to="loc_us-gaap_EquitySecuritiesMember_e7fc9eee-7533-439c-8a9f-0ffbfc058f91" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="extended" id="i779c4b9f466f48c2a910d3648bcf4c10_CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" 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_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_b140b899-6723-47ff-b7bd-c80325e7652f" 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_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_b140b899-6723-47ff-b7bd-c80325e7652f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_cec5e10d-f56c-4f58-adfa-510141aee6e8" 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_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_cec5e10d-f56c-4f58-adfa-510141aee6e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CashPledgedCustomerAdvancesAndDeposits_2b4a8c4f-742f-4633-b347-657f8fc6e7bd" xlink:href="fnf-20200630.xsd#fnf_CashPledgedCustomerAdvancesAndDeposits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_fnf_CashPledgedCustomerAdvancesAndDeposits_2b4a8c4f-742f-4633-b347-657f8fc6e7bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_1dbe052d-234c-46f5-b69d-a226ef96846f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_1dbe052d-234c-46f5-b69d-a226ef96846f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceRecoverablesAllowance_5210691f-49a0-469c-8a4e-0c94ef23ee27" 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_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_ReinsuranceRecoverablesAllowance_5210691f-49a0-469c-8a4e-0c94ef23ee27" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_61488c2d-30ff-4455-8846-575dcc9f8cce" 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_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_61488c2d-30ff-4455-8846-575dcc9f8cce" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_82171a1b-9d41-4b53-b279-0e735601da83" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_82171a1b-9d41-4b53-b279-0e735601da83" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_60b56ba2-90a5-4727-9264-e67671ff76e5" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_60b56ba2-90a5-4727-9264-e67671ff76e5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_7aecd33e-bee0-4483-bf16-bb283c7824ab" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_7aecd33e-bee0-4483-bf16-bb283c7824ab" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_bcf2a0f3-8626-419f-86ac-196e3ecaec07" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_CommonStockSharesIssued_bcf2a0f3-8626-419f-86ac-196e3ecaec07" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_5ba49f56-a24d-4091-ad7a-6c64309a82ea" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_5ba49f56-a24d-4091-ad7a-6c64309a82ea" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_fccda821-4796-4fa8-bc22-65cf7772bdfd" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_fccda821-4796-4fa8-bc22-65cf7772bdfd" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_203238a4-3a43-4278-9052-a173b1f2657b" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_PreferredStockSharesIssued_203238a4-3a43-4278-9052-a173b1f2657b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_6e6ee8b7-e4cf-453e-8421-63b55d26091e" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_6e6ee8b7-e4cf-453e-8421-63b55d26091e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockShares_288afc8b-2f2c-44df-8609-38f7c01b141d" 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_us-gaap_StatementLineItems_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_TreasuryStockShares_288afc8b-2f2c-44df-8609-38f7c01b141d" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_b0361444-7aa5-4de7-b032-70d57ebee702" 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_21e34fcd-8ac8-46f8-b679-6e2e02d71df3" xlink:to="loc_us-gaap_StatementTable_b0361444-7aa5-4de7-b032-70d57ebee702" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_45f02bba-3bd9-4234-80aa-8740949563e7" 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_StatementTable_b0361444-7aa5-4de7-b032-70d57ebee702" xlink:to="loc_srt_OwnershipAxis_45f02bba-3bd9-4234-80aa-8740949563e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_45f02bba-3bd9-4234-80aa-8740949563e7_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_45f02bba-3bd9-4234-80aa-8740949563e7" xlink:to="loc_srt_OwnershipDomain_45f02bba-3bd9-4234-80aa-8740949563e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_9f2281f6-8b10-4cc6-85be-e3e0238ee843" 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_45f02bba-3bd9-4234-80aa-8740949563e7" xlink:to="loc_srt_OwnershipDomain_9f2281f6-8b10-4cc6-85be-e3e0238ee843" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ServiceLinkHoldingsLLCMember_923a4a8d-82a2-4935-a09d-c5f327562bc3" xlink:href="fnf-20200630.xsd#fnf_ServiceLinkHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_9f2281f6-8b10-4cc6-85be-e3e0238ee843" xlink:to="loc_fnf_ServiceLinkHoldingsLLCMember_923a4a8d-82a2-4935-a09d-c5f327562bc3" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEARNINGS" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFEARNINGS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEARNINGS" xlink:type="extended" id="i68c511be573140a4add5f502f817bb50_CONDENSEDCONSOLIDATEDSTATEMENTSOFEARNINGS"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS" xlink:type="extended" id="ifdd2c455db82484d9c76aebfddf39149_CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGS"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical" xlink:type="extended" id="i4d0c5b58604a4044a514f37895d3134d_CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEEARNINGSParenthetical"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="extended" id="i5f7763ec07ea4c308af2a9273ae030c3_CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_d59d9539-1f6b-49d6-89e3-e3e8f3ab8ff8" 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_8c110841-139d-4630-aa16-44f9e884f04c" 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_d59d9539-1f6b-49d6-89e3-e3e8f3ab8ff8" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8c110841-139d-4630-aa16-44f9e884f04c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_00744750-77ca-4203-9e46-d5244b98f9a2" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_SharesIssued_00744750-77ca-4203-9e46-d5244b98f9a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_e58a42f9-e200-4ca7-a4ea-6dbb2b300f18" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_e58a42f9-e200-4ca7-a4ea-6dbb2b300f18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_a64fb49c-2646-46ea-a273-cdf14eef55b5" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_a64fb49c-2646-46ea-a273-cdf14eef55b5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_29d5299c-7dba-4e93-adcc-a649f0646739" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_29d5299c-7dba-4e93-adcc-a649f0646739" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AdjustmentsToAdditionalPaidInCapitalPurchaseOfAdditionalShareInNoncontrollingInterests_8fcb8c24-c08c-4fcf-a06b-1fea174c045f" xlink:href="fnf-20200630.xsd#fnf_AdjustmentsToAdditionalPaidInCapitalPurchaseOfAdditionalShareInNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_fnf_AdjustmentsToAdditionalPaidInCapitalPurchaseOfAdditionalShareInNoncontrollingInterests_8fcb8c24-c08c-4fcf-a06b-1fea174c045f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_db900502-0d56-48b4-848a-df5a549d971c" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_db900502-0d56-48b4-848a-df5a549d971c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_e4647e7f-4dc5-4723-be4e-58872cdf7e45" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_e4647e7f-4dc5-4723-be4e-58872cdf7e45" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_b1c9b1bd-7216-42f1-944a-43f811dc66c2" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_b1c9b1bd-7216-42f1-944a-43f811dc66c2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_4beb2071-617b-4dea-ba9f-e893aa4de8f1" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_4beb2071-617b-4dea-ba9f-e893aa4de8f1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax_5cd1199a-2449-4cda-9386-e88ed5282c02" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax_5cd1199a-2449-4cda-9386-e88ed5282c02" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_d971e6b3-d031-4714-9b19-8b350b2d3367" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_d971e6b3-d031-4714-9b19-8b350b2d3367" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnEquityMethodInvestmentsArisingDuringPeriodNetOfTax_61febb3b-ba82-4a9b-b666-847897acefd4" xlink:href="fnf-20200630.xsd#fnf_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnEquityMethodInvestmentsArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_fnf_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnEquityMethodInvestmentsArisingDuringPeriodNetOfTax_61febb3b-ba82-4a9b-b666-847897acefd4" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_51171d38-6093-4819-b7af-c24a3e06d0b0" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_51171d38-6093-4819-b7af-c24a3e06d0b0" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_21734147-701a-46b2-ad72-9839c33e9006" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_21734147-701a-46b2-ad72-9839c33e9006" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_9e3df795-6848-4e9c-ae1e-039503fa5ec1" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_9e3df795-6848-4e9c-ae1e-039503fa5ec1" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_28969fc2-edc9-42a5-9170-7a01fa17275d" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_DividendsCommonStockCash_28969fc2-edc9-42a5-9170-7a01fa17275d" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_4f87eeca-16e9-4d71-baad-59f6f7516a9e" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_4f87eeca-16e9-4d71-baad-59f6f7516a9e" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_44c254eb-00c8-46ec-bc86-f83fb59208ec" 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_8c110841-139d-4630-aa16-44f9e884f04c" xlink:to="loc_us-gaap_ProfitLoss_44c254eb-00c8-46ec-bc86-f83fb59208ec" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssued_80a7fee2-1194-4f62-ba94-353f617a503d" 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_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_eb27eec6-742c-4412-bba5-fb4606cc8996" 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_IncreaseDecreaseInTemporaryEquityRollForward_7553287c-0cfa-4465-923b-c06600fd49c2" 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_d59d9539-1f6b-49d6-89e3-e3e8f3ab8ff8" xlink:to="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_7553287c-0cfa-4465-923b-c06600fd49c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_0575047e-ff98-41e2-bbb6-3759b3235c44" 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_7553287c-0cfa-4465-923b-c06600fd49c2" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_0575047e-ff98-41e2-bbb6-3759b3235c44" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_71940957-ba21-48cf-ba0a-121c25c686ec" 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_5e62b755-c472-40b1-8d21-51566814f906" 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_d59d9539-1f6b-49d6-89e3-e3e8f3ab8ff8" xlink:to="loc_us-gaap_StatementTable_5e62b755-c472-40b1-8d21-51566814f906" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_4da5012f-19eb-4f78-95f3-7ace464ac513" 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_5e62b755-c472-40b1-8d21-51566814f906" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_4da5012f-19eb-4f78-95f3-7ace464ac513" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_4da5012f-19eb-4f78-95f3-7ace464ac513_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_4da5012f-19eb-4f78-95f3-7ace464ac513" xlink:to="loc_us-gaap_EquityComponentDomain_4da5012f-19eb-4f78-95f3-7ace464ac513_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_59d3c2b4-e20c-4e80-babc-a76cebb71cac" 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_4da5012f-19eb-4f78-95f3-7ace464ac513" xlink:to="loc_us-gaap_EquityComponentDomain_59d3c2b4-e20c-4e80-babc-a76cebb71cac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_4804aeee-b88b-48ed-b24d-4d778286350a" 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_59d3c2b4-e20c-4e80-babc-a76cebb71cac" xlink:to="loc_us-gaap_CommonStockMember_4804aeee-b88b-48ed-b24d-4d778286350a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_46243c3d-0934-4b8e-8077-8db985c8b7fb" 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_59d3c2b4-e20c-4e80-babc-a76cebb71cac" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_46243c3d-0934-4b8e-8077-8db985c8b7fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_8843eaad-1662-48a9-811c-0672adbb3e3e" 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_59d3c2b4-e20c-4e80-babc-a76cebb71cac" xlink:to="loc_us-gaap_RetainedEarningsMember_8843eaad-1662-48a9-811c-0672adbb3e3e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_fb60087e-fda8-49e9-8b7c-66283d7d0998" 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_59d3c2b4-e20c-4e80-babc-a76cebb71cac" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_fb60087e-fda8-49e9-8b7c-66283d7d0998" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockMember_c6d80cde-cd9b-4cd0-a66b-0e4b1be50a16" 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_59d3c2b4-e20c-4e80-babc-a76cebb71cac" xlink:to="loc_us-gaap_TreasuryStockMember_c6d80cde-cd9b-4cd0-a66b-0e4b1be50a16" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_1efe15ee-a329-46a8-8283-9c07f78a6eed" 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_59d3c2b4-e20c-4e80-babc-a76cebb71cac" xlink:to="loc_us-gaap_NoncontrollingInterestMember_1efe15ee-a329-46a8-8283-9c07f78a6eed" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYParenthetical" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYParenthetical"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYParenthetical" xlink:type="extended" id="ia234728aa66e4b9bb7c823480647962e_CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYParenthetical"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="fnf-20200630.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended" id="ia71cec86a362437d88ee550fdb164e10_CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BasisofFinancialStatements" xlink:type="simple" xlink:href="fnf-20200630.xsd#BasisofFinancialStatements"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BasisofFinancialStatements" xlink:type="extended" id="id352f6ced7a248b0ba00635bc0d5139c_BasisofFinancialStatements"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BasisofFinancialStatementsPolicies" xlink:type="simple" xlink:href="fnf-20200630.xsd#BasisofFinancialStatementsPolicies"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BasisofFinancialStatementsPolicies" xlink:type="extended" id="i6f0f9caf56834e7aa72883281fba4418_BasisofFinancialStatementsPolicies"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BasisofFinancialStatementsRecentDevelopmentsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#BasisofFinancialStatementsRecentDevelopmentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BasisofFinancialStatementsRecentDevelopmentsDetails" xlink:type="extended" id="i05112318def243839926b714d0f2ed28_BasisofFinancialStatementsRecentDevelopmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_80eaf12b-e10b-409f-97fd-bb293c3b5f13" 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_BusinessCombinationConsiderationTransferred1_2fa1a9f0-6ad6-4c4f-bb69-9dcaa59e1542" 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_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_2fa1a9f0-6ad6-4c4f-bb69-9dcaa59e1542" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_a0a086ed-ab6a-4a30-8c67-25f6d116c76f" 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_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_a0a086ed-ab6a-4a30-8c67-25f6d116c76f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_42692322-8f90-4358-83b1-c99b4a3df7c9" 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_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_42692322-8f90-4358-83b1-c99b4a3df7c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_dcb37147-ffcf-4c62-9369-3905fb01ce2c" 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_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_dcb37147-ffcf-4c62-9369-3905fb01ce2c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_8e8dbd80-9bfe-4991-a1bf-182491e55a64" 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_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_8e8dbd80-9bfe-4991-a1bf-182491e55a64" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_f0612dcf-fb1a-4bda-bce8-12feefd413a8" 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_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_f0612dcf-fb1a-4bda-bce8-12feefd413a8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates_d2298dfc-ee57-4a73-870c-8c8baccb363d" 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_BusinessAcquisitionLineItems_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates_d2298dfc-ee57-4a73-870c-8c8baccb363d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e16385bf-ce49-4005-b4b8-027f99b263a5" 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_80eaf12b-e10b-409f-97fd-bb293c3b5f13" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e16385bf-ce49-4005-b4b8-027f99b263a5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_f33adaf1-e7a2-4ddc-82bd-ae9e863184d4" 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_e16385bf-ce49-4005-b4b8-027f99b263a5" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_f33adaf1-e7a2-4ddc-82bd-ae9e863184d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_f33adaf1-e7a2-4ddc-82bd-ae9e863184d4_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_f33adaf1-e7a2-4ddc-82bd-ae9e863184d4" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_f33adaf1-e7a2-4ddc-82bd-ae9e863184d4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2fedcf0d-a9eb-4823-b639-62c82ae68389" 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_f33adaf1-e7a2-4ddc-82bd-ae9e863184d4" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2fedcf0d-a9eb-4823-b639-62c82ae68389" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGLHoldingsMember_f1c30d5b-f505-4de7-a10d-77a84e2bf57e" xlink:href="fnf-20200630.xsd#fnf_FGLHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2fedcf0d-a9eb-4823-b639-62c82ae68389" xlink:to="loc_fnf_FGLHoldingsMember_f1c30d5b-f505-4de7-a10d-77a84e2bf57e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5e71b660-dc30-42a9-9fd7-8be9c7259418" 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_e16385bf-ce49-4005-b4b8-027f99b263a5" xlink:to="loc_us-gaap_DebtInstrumentAxis_5e71b660-dc30-42a9-9fd7-8be9c7259418" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5e71b660-dc30-42a9-9fd7-8be9c7259418_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_5e71b660-dc30-42a9-9fd7-8be9c7259418" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5e71b660-dc30-42a9-9fd7-8be9c7259418_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_f2c3beb8-5ff0-4b41-a2d1-112d047a8a95" 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_5e71b660-dc30-42a9-9fd7-8be9c7259418" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_f2c3beb8-5ff0-4b41-a2d1-112d047a8a95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanCreditAgreementMember_90513f49-3fc9-4d99-a413-cb7285b05822" xlink:href="fnf-20200630.xsd#fnf_TermLoanCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f2c3beb8-5ff0-4b41-a2d1-112d047a8a95" xlink:to="loc_fnf_TermLoanCreditAgreementMember_90513f49-3fc9-4d99-a413-cb7285b05822" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A3400SeniorNotesDueJune2030Member_edaefec4-fa87-4134-8df6-a85bdc76bf78" xlink:href="fnf-20200630.xsd#fnf_A3400SeniorNotesDueJune2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f2c3beb8-5ff0-4b41-a2d1-112d047a8a95" xlink:to="loc_fnf_A3400SeniorNotesDueJune2030Member_edaefec4-fa87-4134-8df6-a85bdc76bf78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_a1f0c5fc-298c-4edf-af77-34c8523ac17b" 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_e16385bf-ce49-4005-b4b8-027f99b263a5" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_a1f0c5fc-298c-4edf-af77-34c8523ac17b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a1f0c5fc-298c-4edf-af77-34c8523ac17b_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_a1f0c5fc-298c-4edf-af77-34c8523ac17b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a1f0c5fc-298c-4edf-af77-34c8523ac17b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6a37a6bf-2e00-4221-b0b4-55346fc8b028" 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_a1f0c5fc-298c-4edf-af77-34c8523ac17b" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6a37a6bf-2e00-4221-b0b4-55346fc8b028" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanMember_3d196bbc-a5b5-4d4d-a95c-354a36504140" xlink:href="fnf-20200630.xsd#fnf_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6a37a6bf-2e00-4221-b0b4-55346fc8b028" xlink:to="loc_fnf_TermLoanMember_3d196bbc-a5b5-4d4d-a95c-354a36504140" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_24444860-638e-4959-9816-acc48e7980f2" 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_e16385bf-ce49-4005-b4b8-027f99b263a5" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_24444860-638e-4959-9816-acc48e7980f2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_24444860-638e-4959-9816-acc48e7980f2_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_24444860-638e-4959-9816-acc48e7980f2" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_24444860-638e-4959-9816-acc48e7980f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_1ab5b538-e3bb-453c-b01d-efe1a7d0c943" 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_24444860-638e-4959-9816-acc48e7980f2" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_1ab5b538-e3bb-453c-b01d-efe1a7d0c943" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_14add3e3-a87f-408d-a896-d883f26a7c1c" 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_1ab5b538-e3bb-453c-b01d-efe1a7d0c943" xlink:to="loc_us-gaap_SubsequentEventMember_14add3e3-a87f-408d-a896-d883f26a7c1c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_00b0ad6d-993d-4ef3-8a7e-7faaf0336f81" 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_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e16385bf-ce49-4005-b4b8-027f99b263a5" xlink:to="loc_srt_CounterpartyNameAxis_00b0ad6d-993d-4ef3-8a7e-7faaf0336f81" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_00b0ad6d-993d-4ef3-8a7e-7faaf0336f81_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_00b0ad6d-993d-4ef3-8a7e-7faaf0336f81" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_00b0ad6d-993d-4ef3-8a7e-7faaf0336f81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_cc93894b-2daf-4424-a9d1-34fac79e0b77" 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_00b0ad6d-993d-4ef3-8a7e-7faaf0336f81" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_cc93894b-2daf-4424-a9d1-34fac79e0b77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ServiceLinkHoldingsLLCMember_1b25811b-68b9-40c3-97aa-9a14bec3d074" xlink:href="fnf-20200630.xsd#fnf_ServiceLinkHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_cc93894b-2daf-4424-a9d1-34fac79e0b77" xlink:to="loc_fnf_ServiceLinkHoldingsLLCMember_1b25811b-68b9-40c3-97aa-9a14bec3d074" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BasisofFinancialStatementsIncomeTaxDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#BasisofFinancialStatementsIncomeTaxDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BasisofFinancialStatementsIncomeTaxDetails" xlink:type="extended" id="i88f4b551fcd74ef5bbe59d7ca093d87d_BasisofFinancialStatementsIncomeTaxDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BasisofFinancialStatementsEarningsPerShareDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#BasisofFinancialStatementsEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BasisofFinancialStatementsEarningsPerShareDetails" xlink:type="extended" id="i125d2e934de04a76a84c54a57598a0e9_BasisofFinancialStatementsEarningsPerShareDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/BasisofFinancialStatementsBenefitsandOtherChangesinPolicyReservesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#BasisofFinancialStatementsBenefitsandOtherChangesinPolicyReservesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BasisofFinancialStatementsBenefitsandOtherChangesinPolicyReservesDetails" xlink:type="extended" id="i66bcfbae8ff3484fba35d696d3678634_BasisofFinancialStatementsBenefitsandOtherChangesinPolicyReservesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskLineItems_2f86f69c-86ad-4b47-a23c-e063de4b79bc" 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_945fe718-b337-4334-9a0f-568d06561f27" xlink:href="fnf-20200630.xsd#fnf_InterestCreditingRatesForFundsAtSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_2f86f69c-86ad-4b47-a23c-e063de4b79bc" xlink:to="loc_fnf_InterestCreditingRatesForFundsAtSubsidiaries_945fe718-b337-4334-9a0f-568d06561f27" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskTable_f1feb37a-5c4a-4294-b300-37b908ce7db8" 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_2f86f69c-86ad-4b47-a23c-e063de4b79bc" xlink:to="loc_us-gaap_CededCreditRiskTable_f1feb37a-5c4a-4294-b300-37b908ce7db8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_f9876854-4d78-4b15-a46a-d7ca7e2c6dea" 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_f1feb37a-5c4a-4294-b300-37b908ce7db8" xlink:to="loc_srt_ProductOrServiceAxis_f9876854-4d78-4b15-a46a-d7ca7e2c6dea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f9876854-4d78-4b15-a46a-d7ca7e2c6dea_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_f9876854-4d78-4b15-a46a-d7ca7e2c6dea" xlink:to="loc_srt_ProductsAndServicesDomain_f9876854-4d78-4b15-a46a-d7ca7e2c6dea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d984eab6-f3db-4f21-a93e-1e9456281e3a" 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_f9876854-4d78-4b15-a46a-d7ca7e2c6dea" xlink:to="loc_srt_ProductsAndServicesDomain_d984eab6-f3db-4f21-a93e-1e9456281e3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedAnnuityMember_3533c111-c260-4837-a8f1-627f7b9e9036" 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_d984eab6-f3db-4f21-a93e-1e9456281e3a" xlink:to="loc_us-gaap_FixedAnnuityMember_3533c111-c260-4837-a8f1-627f7b9e9036" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UniversalLifeMember_c08e113c-236a-4eec-acb8-c32b66bc65af" 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_d984eab6-f3db-4f21-a93e-1e9456281e3a" xlink:to="loc_us-gaap_UniversalLifeMember_c08e113c-236a-4eec-acb8-c32b66bc65af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c3ffe7d9-adb0-4340-8c83-d96302cee546" 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_f1feb37a-5c4a-4294-b300-37b908ce7db8" xlink:to="loc_srt_RangeAxis_c3ffe7d9-adb0-4340-8c83-d96302cee546" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c3ffe7d9-adb0-4340-8c83-d96302cee546_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_c3ffe7d9-adb0-4340-8c83-d96302cee546" xlink:to="loc_srt_RangeMember_c3ffe7d9-adb0-4340-8c83-d96302cee546_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c135d7c4-9a09-449f-a9d0-174d03d9c8b0" 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_c3ffe7d9-adb0-4340-8c83-d96302cee546" xlink:to="loc_srt_RangeMember_c135d7c4-9a09-449f-a9d0-174d03d9c8b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_1199b7f6-8194-4f9b-a250-9192943ee94f" 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_c135d7c4-9a09-449f-a9d0-174d03d9c8b0" xlink:to="loc_srt_MinimumMember_1199b7f6-8194-4f9b-a250-9192943ee94f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_240e37f9-2d2a-42e2-8b2f-748a8ed9f254" 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_c135d7c4-9a09-449f-a9d0-174d03d9c8b0" xlink:to="loc_srt_MaximumMember_240e37f9-2d2a-42e2-8b2f-748a8ed9f254" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/BasisofFinancialStatementsFuturePolicyBenefitsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#BasisofFinancialStatementsFuturePolicyBenefitsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/BasisofFinancialStatementsFuturePolicyBenefitsDetails" xlink:type="extended" id="i4a4245aeb1da4b339a596de65564c28e_BasisofFinancialStatementsFuturePolicyBenefitsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskLineItems_acfa9e34-d3a6-46a8-95dd-f6042dde2330" 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_LongDurationContractsAssumptionsByProductAndGuaranteeEstimatedAverageInvestmentYield_7a267ee1-9a46-4289-bffd-23b5b8cac01f" 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_acfa9e34-d3a6-46a8-95dd-f6042dde2330" xlink:to="loc_us-gaap_LongDurationContractsAssumptionsByProductAndGuaranteeEstimatedAverageInvestmentYield_7a267ee1-9a46-4289-bffd-23b5b8cac01f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskTable_58a4145f-6fe9-4071-883c-b5b9f9975eac" 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_acfa9e34-d3a6-46a8-95dd-f6042dde2330" xlink:to="loc_us-gaap_CededCreditRiskTable_58a4145f-6fe9-4071-883c-b5b9f9975eac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_2535f4a3-0f83-48bc-80fa-69e7f950b498" 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_58a4145f-6fe9-4071-883c-b5b9f9975eac" xlink:to="loc_srt_ProductOrServiceAxis_2535f4a3-0f83-48bc-80fa-69e7f950b498" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_2535f4a3-0f83-48bc-80fa-69e7f950b498_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_2535f4a3-0f83-48bc-80fa-69e7f950b498" xlink:to="loc_srt_ProductsAndServicesDomain_2535f4a3-0f83-48bc-80fa-69e7f950b498_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f945c835-0772-4b77-a34a-18b22cb7a058" 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_2535f4a3-0f83-48bc-80fa-69e7f950b498" xlink:to="loc_srt_ProductsAndServicesDomain_f945c835-0772-4b77-a34a-18b22cb7a058" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeInsuranceSegmentMember_bed9b482-375d-4d1e-b9de-bc7d819c7885" 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_f945c835-0772-4b77-a34a-18b22cb7a058" xlink:to="loc_us-gaap_LifeInsuranceSegmentMember_bed9b482-375d-4d1e-b9de-bc7d819c7885" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_ef742542-32d0-4866-8f09-36979f9dd748" 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_f945c835-0772-4b77-a34a-18b22cb7a058" xlink:to="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_ef742542-32d0-4866-8f09-36979f9dd748" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_05caa6fc-da6b-450d-9c63-313ec0f50052" 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_58a4145f-6fe9-4071-883c-b5b9f9975eac" xlink:to="loc_srt_RangeAxis_05caa6fc-da6b-450d-9c63-313ec0f50052" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_05caa6fc-da6b-450d-9c63-313ec0f50052_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_05caa6fc-da6b-450d-9c63-313ec0f50052" xlink:to="loc_srt_RangeMember_05caa6fc-da6b-450d-9c63-313ec0f50052_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ae456959-f21d-44cc-a326-c165d6955150" 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_05caa6fc-da6b-450d-9c63-313ec0f50052" xlink:to="loc_srt_RangeMember_ae456959-f21d-44cc-a326-c165d6955150" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_3533e8c3-dec0-4493-aad9-ae31de5d7c57" 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_ae456959-f21d-44cc-a326-c165d6955150" xlink:to="loc_srt_MaximumMember_3533e8c3-dec0-4493-aad9-ae31de5d7c57" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f8098ea7-eaf0-4382-a6fb-2124ce03e982" 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_ae456959-f21d-44cc-a326-c165d6955150" xlink:to="loc_srt_MinimumMember_f8098ea7-eaf0-4382-a6fb-2124ce03e982" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/RisksandUncertainties" xlink:type="simple" xlink:href="fnf-20200630.xsd#RisksandUncertainties"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RisksandUncertainties" xlink:type="extended" id="i4923007629514146ad1423183c523376_RisksandUncertainties"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RisksandUncertaintiesNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#RisksandUncertaintiesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RisksandUncertaintiesNarrativeDetails" xlink:type="extended" id="if47d2b548b8e47818b39fdbe7d61cbd8_RisksandUncertaintiesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_51dfb495-a384-45d1-bce2-7dba08d05e14" 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_fnf_InvestmentSecuritiesHeldbySubsidiariesSubjecttoSpecializedIndustryAccountingPrinciplesatFairValue_d9509a95-17d1-487a-bee8-dee66e904d1c" xlink:href="fnf-20200630.xsd#fnf_InvestmentSecuritiesHeldbySubsidiariesSubjecttoSpecializedIndustryAccountingPrinciplesatFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_51dfb495-a384-45d1-bce2-7dba08d05e14" xlink:to="loc_fnf_InvestmentSecuritiesHeldbySubsidiariesSubjecttoSpecializedIndustryAccountingPrinciplesatFairValue_d9509a95-17d1-487a-bee8-dee66e904d1c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PercentageOfInvestmentsFairValueInRelationToInvestedAssetsPortfolio_ad95bf3b-b7ed-4ee8-a531-fc84bbe5c957" xlink:href="fnf-20200630.xsd#fnf_PercentageOfInvestmentsFairValueInRelationToInvestedAssetsPortfolio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_51dfb495-a384-45d1-bce2-7dba08d05e14" xlink:to="loc_fnf_PercentageOfInvestmentsFairValueInRelationToInvestedAssetsPortfolio_ad95bf3b-b7ed-4ee8-a531-fc84bbe5c957" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentSecuritiesHeldbySubsidiariesSubjecttoSpecializedIndustryAccountingPrinciplesatAmortizedCost_41292e86-8eb9-42ed-8089-60795b134b0e" xlink:href="fnf-20200630.xsd#fnf_InvestmentSecuritiesHeldbySubsidiariesSubjecttoSpecializedIndustryAccountingPrinciplesatAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_51dfb495-a384-45d1-bce2-7dba08d05e14" xlink:to="loc_fnf_InvestmentSecuritiesHeldbySubsidiariesSubjecttoSpecializedIndustryAccountingPrinciplesatAmortizedCost_41292e86-8eb9-42ed-8089-60795b134b0e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NumberOfIssuersInInvestment_4a437e68-0915-4e5a-8173-49a12de658bc" xlink:href="fnf-20200630.xsd#fnf_NumberOfIssuersInInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_51dfb495-a384-45d1-bce2-7dba08d05e14" xlink:to="loc_fnf_NumberOfIssuersInInvestment_4a437e68-0915-4e5a-8173-49a12de658bc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInInvestments_a3973ec8-e180-4e0a-960d-543303bd6898" xlink:href="fnf-20200630.xsd#fnf_FairValueInInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_51dfb495-a384-45d1-bce2-7dba08d05e14" xlink:to="loc_fnf_FairValueInInvestments_a3973ec8-e180-4e0a-960d-543303bd6898" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_2b05f4c7-7bf0-4767-a1f0-afffb258b367" 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_ConcentrationRiskLineItems_51dfb495-a384-45d1-bce2-7dba08d05e14" xlink:to="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_2b05f4c7-7bf0-4767-a1f0-afffb258b367" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_72b2fa10-ad7e-498e-9747-51ecf51e6f77" 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_51dfb495-a384-45d1-bce2-7dba08d05e14" xlink:to="loc_us-gaap_ConcentrationRiskTable_72b2fa10-ad7e-498e-9747-51ecf51e6f77" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_770c9f27-be69-420a-9422-e1186b61baf8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_72b2fa10-ad7e-498e-9747-51ecf51e6f77" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_770c9f27-be69-420a-9422-e1186b61baf8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_770c9f27-be69-420a-9422-e1186b61baf8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_770c9f27-be69-420a-9422-e1186b61baf8" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_770c9f27-be69-420a-9422-e1186b61baf8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_d59d2306-964d-4475-b8d2-e0455d16ab44" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_770c9f27-be69-420a-9422-e1186b61baf8" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_d59d2306-964d-4475-b8d2-e0455d16ab44" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskAllFinancialInstrumentsMember_7e96a1d8-a21d-4136-9a50-0b26527bfdbe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueConcentrationOfRiskAllFinancialInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_d59d2306-964d-4475-b8d2-e0455d16ab44" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskAllFinancialInstrumentsMember_7e96a1d8-a21d-4136-9a50-0b26527bfdbe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SingleIssuerMember_ce984cc3-b33a-40d7-ae1a-9bb8cacc86fe" xlink:href="fnf-20200630.xsd#fnf_SingleIssuerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_d59d2306-964d-4475-b8d2-e0455d16ab44" xlink:to="loc_fnf_SingleIssuerMember_ce984cc3-b33a-40d7-ae1a-9bb8cacc86fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentSecondaryCategorizationAxis_303ab81a-0787-489d-ab52-959320ceaec2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentSecondaryCategorizationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_72b2fa10-ad7e-498e-9747-51ecf51e6f77" xlink:to="loc_us-gaap_InvestmentSecondaryCategorizationAxis_303ab81a-0787-489d-ab52-959320ceaec2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_303ab81a-0787-489d-ab52-959320ceaec2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentSecondaryCategorizationAxis_303ab81a-0787-489d-ab52-959320ceaec2" xlink:to="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_303ab81a-0787-489d-ab52-959320ceaec2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_d0c787ca-f6c2-47bc-9426-dd1f5332e235" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentSecondaryCategorizationAxis_303ab81a-0787-489d-ab52-959320ceaec2" xlink:to="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_d0c787ca-f6c2-47bc-9426-dd1f5332e235" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BankingIndustryMember_6790efe1-2e52-4b3f-ac05-40a2d52cb945" xlink:href="fnf-20200630.xsd#fnf_BankingIndustryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsBySecondaryCategorizationDomain_d0c787ca-f6c2-47bc-9426-dd1f5332e235" xlink:to="loc_fnf_BankingIndustryMember_6790efe1-2e52-4b3f-ac05-40a2d52cb945" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_bf39fc01-cbf0-4f65-83d8-47a3e5780315" 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_ConcentrationRiskTable_72b2fa10-ad7e-498e-9747-51ecf51e6f77" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_bf39fc01-cbf0-4f65-83d8-47a3e5780315" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_bf39fc01-cbf0-4f65-83d8-47a3e5780315_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_bf39fc01-cbf0-4f65-83d8-47a3e5780315" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_bf39fc01-cbf0-4f65-83d8-47a3e5780315_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_e6c7864a-6053-4031-a508-e6b322df95ea" 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_bf39fc01-cbf0-4f65-83d8-47a3e5780315" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_e6c7864a-6053-4031-a508-e6b322df95ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TopTenHoldingsMember_1ae2e0be-d797-433a-800d-6530400c3df9" xlink:href="fnf-20200630.xsd#fnf_TopTenHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_e6c7864a-6053-4031-a508-e6b322df95ea" xlink:to="loc_fnf_TopTenHoldingsMember_1ae2e0be-d797-433a-800d-6530400c3df9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WellsFargoMember_064025e1-37a8-40e6-811e-6384c8c77f9c" xlink:href="fnf-20200630.xsd#fnf_WellsFargoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_e6c7864a-6053-4031-a508-e6b322df95ea" xlink:to="loc_fnf_WellsFargoMember_064025e1-37a8-40e6-811e-6384c8c77f9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_25b47456-564d-4e41-855d-8eeaa1cc6c87" 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_ConcentrationRiskTable_72b2fa10-ad7e-498e-9747-51ecf51e6f77" xlink:to="loc_srt_RangeAxis_25b47456-564d-4e41-855d-8eeaa1cc6c87" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_25b47456-564d-4e41-855d-8eeaa1cc6c87_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_25b47456-564d-4e41-855d-8eeaa1cc6c87" xlink:to="loc_srt_RangeMember_25b47456-564d-4e41-855d-8eeaa1cc6c87_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_28c08ab2-2714-4e7c-aed5-37126239deb7" 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_25b47456-564d-4e41-855d-8eeaa1cc6c87" xlink:to="loc_srt_RangeMember_28c08ab2-2714-4e7c-aed5-37126239deb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_c72c672c-064c-4d33-885a-44620e209135" 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_28c08ab2-2714-4e7c-aed5-37126239deb7" xlink:to="loc_srt_MinimumMember_c72c672c-064c-4d33-885a-44620e209135" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_dace7e12-c88a-4d09-a933-f81b245a3830" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_72b2fa10-ad7e-498e-9747-51ecf51e6f77" xlink:to="loc_dei_LegalEntityAxis_dace7e12-c88a-4d09-a933-f81b245a3830" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_dace7e12-c88a-4d09-a933-f81b245a3830_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_dace7e12-c88a-4d09-a933-f81b245a3830" xlink:to="loc_dei_EntityDomain_dace7e12-c88a-4d09-a933-f81b245a3830_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_528cd369-d321-47b0-80aa-d4761ccff8b2" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_dace7e12-c88a-4d09-a933-f81b245a3830" xlink:to="loc_dei_EntityDomain_528cd369-d321-47b0-80aa-d4761ccff8b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WiltonReassuranceCompanyMember_56007170-1847-4fb7-8ee6-840d28566233" xlink:href="fnf-20200630.xsd#fnf_WiltonReassuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_528cd369-d321-47b0-80aa-d4761ccff8b2" xlink:to="loc_fnf_WiltonReassuranceCompanyMember_56007170-1847-4fb7-8ee6-840d28566233" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_KuberaReassuranceCompanyMember_77b974af-8578-4c92-b4be-d0cf9bfe9c10" xlink:href="fnf-20200630.xsd#fnf_KuberaReassuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_528cd369-d321-47b0-80aa-d4761ccff8b2" xlink:to="loc_fnf_KuberaReassuranceCompanyMember_77b974af-8578-4c92-b4be-d0cf9bfe9c10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ScottishReMember_0647c5eb-bb6b-48f5-8239-018b3a4fb2a2" xlink:href="fnf-20200630.xsd#fnf_ScottishReMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_528cd369-d321-47b0-80aa-d4761ccff8b2" xlink:to="loc_fnf_ScottishReMember_0647c5eb-bb6b-48f5-8239-018b3a4fb2a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PavoniaLifeInsuranceCompanyMember_14832120-e08a-4105-a545-3db62dcfd007" xlink:href="fnf-20200630.xsd#fnf_PavoniaLifeInsuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_528cd369-d321-47b0-80aa-d4761ccff8b2" xlink:to="loc_fnf_PavoniaLifeInsuranceCompanyMember_14832120-e08a-4105-a545-3db62dcfd007" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Acquisitions" xlink:type="simple" xlink:href="fnf-20200630.xsd#Acquisitions"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Acquisitions" xlink:type="extended" id="i68e7af9db2a34732949b4633da8eba43_Acquisitions"/>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#AcquisitionsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsTables" xlink:type="extended" id="i871a68c0c83c4d789535867f070b3d15_AcquisitionsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#AcquisitionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsNarrativeDetails" xlink:type="extended" id="i9f126ab500f242e38b61b5ed95d0995e_AcquisitionsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_3606da41-af47-46fa-9d78-b889119dc59f" 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_88b2dc75-1faf-413f-ac13-6dafa0ecb1d9" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_88b2dc75-1faf-413f-ac13-6dafa0ecb1d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_0c36db0b-fbf8-4c1a-ab13-c1e6ee4c4fb6" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_0c36db0b-fbf8-4c1a-ab13-c1e6ee4c4fb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_703d7303-887f-4a38-9039-359fc82ad44f" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_703d7303-887f-4a38-9039-359fc82ad44f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_5e899616-4f7d-4b05-9d7a-eb68359ffe63" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_5e899616-4f7d-4b05-9d7a-eb68359ffe63" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_96632586-8695-49fe-94c6-7d75be8fd77f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_96632586-8695-49fe-94c6-7d75be8fd77f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationWarrantConversionConsiderationOrdinarySharesConvertedToRightToPurchaseAndReceiveUponExerciseCashPaidPerShare_3a16ef08-24dd-4307-bbe1-0fd25aaa6a0c" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationWarrantConversionConsiderationOrdinarySharesConvertedToRightToPurchaseAndReceiveUponExerciseCashPaidPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_fnf_BusinessCombinationWarrantConversionConsiderationOrdinarySharesConvertedToRightToPurchaseAndReceiveUponExerciseCashPaidPerShare_3a16ef08-24dd-4307-bbe1-0fd25aaa6a0c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare_ee92818f-625c-4e2e-8c74-d5031d0c9d27" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_fnf_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableCashPaidPerAcquireeShare_ee92818f-625c-4e2e-8c74-d5031d0c9d27" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationSharesConvertedCommonAndPreferredStock_b63f2ceb-11b4-470f-bcc2-b19b54126ced" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationSharesConvertedCommonAndPreferredStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_fnf_BusinessCombinationSharesConvertedCommonAndPreferredStock_b63f2ceb-11b4-470f-bcc2-b19b54126ced" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_4cfb66b2-6675-4662-98b5-f359918c80e5" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_4cfb66b2-6675-4662-98b5-f359918c80e5" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_7061bb84-f2ee-4424-83c0-8f5a5e35030b" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_7061bb84-f2ee-4424-83c0-8f5a5e35030b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_9cefc13b-22e3-474a-b814-be5dfce72638" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_9cefc13b-22e3-474a-b814-be5dfce72638" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e4d4189d-b1d1-434d-b441-f4d4441d89e0" 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_3606da41-af47-46fa-9d78-b889119dc59f" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e4d4189d-b1d1-434d-b441-f4d4441d89e0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_7e83496c-6763-4674-8a2c-aa00b3b5910c" 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_e4d4189d-b1d1-434d-b441-f4d4441d89e0" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_7e83496c-6763-4674-8a2c-aa00b3b5910c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7e83496c-6763-4674-8a2c-aa00b3b5910c_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_7e83496c-6763-4674-8a2c-aa00b3b5910c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7e83496c-6763-4674-8a2c-aa00b3b5910c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_36b12faf-eb44-45c8-aafd-20a78580428e" 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_7e83496c-6763-4674-8a2c-aa00b3b5910c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_36b12faf-eb44-45c8-aafd-20a78580428e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_974c8932-a636-4df8-94d4-79c3799b9820" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_36b12faf-eb44-45c8-aafd-20a78580428e" xlink:to="loc_fnf_FGMember_974c8932-a636-4df8-94d4-79c3799b9820" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGLHoldingsMember_02e0104c-3910-41c3-a58d-a4b6a7542938" xlink:href="fnf-20200630.xsd#fnf_FGLHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_36b12faf-eb44-45c8-aafd-20a78580428e" xlink:to="loc_fnf_FGLHoldingsMember_02e0104c-3910-41c3-a58d-a4b6a7542938" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsConsiderationPaidDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#AcquisitionsConsiderationPaidDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsConsiderationPaidDetails" xlink:type="extended" id="i081cb0e29da34aeea45e6e8bb667aba5_AcquisitionsConsiderationPaidDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_d4cc7639-516d-49ef-94ed-a1a93a846d81" 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_PaymentsToAcquireBusinessesGross_078ab7d1-6573-489c-9e6b-a80c46ed159c" 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_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_078ab7d1-6573-489c-9e6b-a80c46ed159c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAcquiredFromAcquisition_3ffb7522-fbf5-4ca9-898e-401de6407c55" 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_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_us-gaap_CashAcquiredFromAcquisition_3ffb7522-fbf5-4ca9-898e-401de6407c55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_357ec685-dc1f-4261-9ed9-e475b9a333fd" 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_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_357ec685-dc1f-4261-9ed9-e475b9a333fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_77be9388-c83a-44e4-8cbf-c5b13204f327" 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_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_77be9388-c83a-44e4-8cbf-c5b13204f327" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_c7fd5409-7bde-4c09-a67c-cdba04c36589" 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_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredOther1_c7fd5409-7bde-4c09-a67c-cdba04c36589" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_683906ef-8236-4a43-9e02-1ad90c0dfe84" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_683906ef-8236-4a43-9e02-1ad90c0dfe84" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationConsiderationTransferredNet_939af67b-4cd8-4750-aae5-547a9b14f875" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationConsiderationTransferredNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_fnf_BusinessCombinationConsiderationTransferredNet_939af67b-4cd8-4750-aae5-547a9b14f875" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aafeb635-b6b8-4e74-85c9-1753463f4405" 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_d4cc7639-516d-49ef-94ed-a1a93a846d81" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_aafeb635-b6b8-4e74-85c9-1753463f4405" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_03b0c592-e8bc-487f-9f00-13e456a9d104" 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_aafeb635-b6b8-4e74-85c9-1753463f4405" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_03b0c592-e8bc-487f-9f00-13e456a9d104" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_03b0c592-e8bc-487f-9f00-13e456a9d104_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_03b0c592-e8bc-487f-9f00-13e456a9d104" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_03b0c592-e8bc-487f-9f00-13e456a9d104_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c3ec5295-9a0b-46cd-a007-02e8c95d935c" 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_03b0c592-e8bc-487f-9f00-13e456a9d104" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c3ec5295-9a0b-46cd-a007-02e8c95d935c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_7b1d1e33-deb6-4023-bf54-f75dbfe42a68" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c3ec5295-9a0b-46cd-a007-02e8c95d935c" xlink:to="loc_fnf_FGMember_7b1d1e33-deb6-4023-bf54-f75dbfe42a68" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended" id="i54d53af7606048cba1199ae89b78e4c2_AcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" 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_8ce9a58f-4ad6-4b98-aaac-dc6b6c7630fd" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_8ce9a58f-4ad6-4b98-aaac-dc6b6c7630fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsDerivativeInstruments_1762030e-eac2-4faf-9db3-3bbfa60cd22d" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsDerivativeInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsDerivativeInstruments_1762030e-eac2-4faf-9db3-3bbfa60cd22d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsMortgageLoans_e6827e6a-6a84-48c6-9e44-0ab736d932e6" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsMortgageLoans_e6827e6a-6a84-48c6-9e44-0ab736d932e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonCurrentAssetsEquityMethodInvestments_bec9df1d-8411-4ca1-92ba-36317923b079" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonCurrentAssetsEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNonCurrentAssetsEquityMethodInvestments_bec9df1d-8411-4ca1-92ba-36317923b079" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_6581e70c-22ec-4606-b9e2-172465bad53a" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_6581e70c-22ec-4606-b9e2-172465bad53a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsShortTermInvestments_bb9e24d0-a4a7-4bda-be34-281255e4680c" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsShortTermInvestments_bb9e24d0-a4a7-4bda-be34-281255e4680c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_d1e06d1e-337b-48f0-bdeb-912a6a371aa5" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_d1e06d1e-337b-48f0-bdeb-912a6a371aa5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsReinsuranceRecoverables_c58bae79-e0ef-48c3-ba62-ea9f6a1fb360" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsReinsuranceRecoverables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsReinsuranceRecoverables_c58bae79-e0ef-48c3-ba62-ea9f6a1fb360" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_62a609ef-ba00-4616-a0e9-8c427dafccdd" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_Goodwill_62a609ef-ba00-4616-a0e9-8c427dafccdd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_23a8ef0e-0e2b-4c48-bcbe-14235d541f50" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_23a8ef0e-0e2b-4c48-bcbe-14235d541f50" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRightOfUseAssets_fa4b11dc-1578-4ed0-b977-fd328a5fc612" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRightOfUseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRightOfUseAssets_fa4b11dc-1578-4ed0-b977-fd328a5fc612" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_91f12657-060b-4d84-ad86-a17a4e6d9bc9" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_91f12657-060b-4d84-ad86-a17a4e6d9bc9" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsOfDiscontinuedOperations_5a463555-9657-4058-a057-2c1cf8cd6638" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsOfDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsOfDiscontinuedOperations_5a463555-9657-4058-a057-2c1cf8cd6638" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_26461d21-8f73-45cd-8c29-a539ac799507" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_26461d21-8f73-45cd-8c29-a539ac799507" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityPolicyHolderAccountBalances_8a8c5066-7039-41d3-b4f5-5e1476c6070f" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityPolicyHolderAccountBalances"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityPolicyHolderAccountBalances_8a8c5066-7039-41d3-b4f5-5e1476c6070f" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityForFuturePolicyBenefits_dce0f9fb-f26e-4422-bd18-4c68c9cd0800" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityForFuturePolicyBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilityForFuturePolicyBenefits_dce0f9fb-f26e-4422-bd18-4c68c9cd0800" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_cbbcad6f-5ca9-42e9-a657-3f02ff9f4c00" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_cbbcad6f-5ca9-42e9-a657-3f02ff9f4c00" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_01807cda-4a44-4a63-8d32-d5c03c7d63bc" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_01807cda-4a44-4a63-8d32-d5c03c7d63bc" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFundsWithheldForReinsuranceLiabilities_1d5d1543-f322-49aa-961c-c0e629801c58" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFundsWithheldForReinsuranceLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFundsWithheldForReinsuranceLiabilities_1d5d1543-f322-49aa-961c-c0e629801c58" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiability_933a12f5-d5b1-4c53-bee2-12fdd89ec049" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiability_933a12f5-d5b1-4c53-bee2-12fdd89ec049" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIncomeTaxesPayable_0b52d7c4-adf3-4468-8cd6-53627307eddc" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIncomeTaxesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIncomeTaxesPayable_0b52d7c4-adf3-4468-8cd6-53627307eddc" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_b7f52775-5aab-4f11-a0f2-990e992a0e37" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_b7f52775-5aab-4f11-a0f2-990e992a0e37" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOfDiscontinuedOperations_a05e05e8-feac-47d9-a990-0eed8ab222a8" xlink:href="fnf-20200630.xsd#fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOfDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_fnf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOfDiscontinuedOperations_a05e05e8-feac-47d9-a990-0eed8ab222a8" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_6ad1c80e-82a6-42bf-afa5-e428d69fbf2e" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_6ad1c80e-82a6-42bf-afa5-e428d69fbf2e" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_78ca0de0-54d1-4388-9f92-ffe576e736ba" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_78ca0de0-54d1-4388-9f92-ffe576e736ba" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_37863950-9f03-4754-9042-a4d6000f61c9" 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_7944a59f-dd47-42c4-a062-cfc87808b0de" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_37863950-9f03-4754-9042-a4d6000f61c9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_05b3512f-2648-487e-9cab-26da5e254f3f" 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_37863950-9f03-4754-9042-a4d6000f61c9" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_05b3512f-2648-487e-9cab-26da5e254f3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_05b3512f-2648-487e-9cab-26da5e254f3f_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_05b3512f-2648-487e-9cab-26da5e254f3f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_05b3512f-2648-487e-9cab-26da5e254f3f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_af8f3b57-2efb-4e01-96fc-36fdc189f2bc" 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_05b3512f-2648-487e-9cab-26da5e254f3f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_af8f3b57-2efb-4e01-96fc-36fdc189f2bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_7dfebc7b-142d-4cc8-8e13-69affb981bf1" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_af8f3b57-2efb-4e01-96fc-36fdc189f2bc" xlink:to="loc_fnf_FGMember_7dfebc7b-142d-4cc8-8e13-69affb981bf1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_a6beaf2f-6bf2-40e4-8c7c-1337ed5e37a5" 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_37863950-9f03-4754-9042-a4d6000f61c9" xlink:to="loc_us-gaap_FinancialInstrumentAxis_a6beaf2f-6bf2-40e4-8c7c-1337ed5e37a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a6beaf2f-6bf2-40e4-8c7c-1337ed5e37a5_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_a6beaf2f-6bf2-40e4-8c7c-1337ed5e37a5" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a6beaf2f-6bf2-40e4-8c7c-1337ed5e37a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_bbb3cf6b-b8b5-4c40-af82-5e90d3e7a05c" 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_a6beaf2f-6bf2-40e4-8c7c-1337ed5e37a5" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_bbb3cf6b-b8b5-4c40-af82-5e90d3e7a05c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_a6db5528-69a2-4cb1-984e-c1f5f3292741" 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_bbb3cf6b-b8b5-4c40-af82-5e90d3e7a05c" xlink:to="loc_us-gaap_DebtSecuritiesMember_a6db5528-69a2-4cb1-984e-c1f5f3292741" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_ab030835-58bd-485c-9fae-47318012c03b" 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_bbb3cf6b-b8b5-4c40-af82-5e90d3e7a05c" xlink:to="loc_us-gaap_PreferredStockMember_ab030835-58bd-485c-9fae-47318012c03b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_218ab199-173b-4b51-bccb-f9bcd17b8dee" 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_bbb3cf6b-b8b5-4c40-af82-5e90d3e7a05c" xlink:to="loc_us-gaap_EquitySecuritiesMember_218ab199-173b-4b51-bccb-f9bcd17b8dee" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsCarryingValueandEstimatedUsefulLivesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#AcquisitionsCarryingValueandEstimatedUsefulLivesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsCarryingValueandEstimatedUsefulLivesDetails" xlink:type="extended" id="i26ac112edea64a32acdad5613107f354_AcquisitionsCarryingValueandEstimatedUsefulLivesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_7fead452-8080-48b0-ae6e-33b2324dad49" 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_ac2c4e6d-ecec-4a48-bd93-1370713c40e3" 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_7fead452-8080-48b0-ae6e-33b2324dad49" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_ac2c4e6d-ecec-4a48-bd93-1370713c40e3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_739f5369-407c-443f-8122-a90083b527e2" 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_7fead452-8080-48b0-ae6e-33b2324dad49" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_739f5369-407c-443f-8122-a90083b527e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_abaf82c2-b728-4eba-8fe1-0634fd40cfbf" 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_7fead452-8080-48b0-ae6e-33b2324dad49" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_abaf82c2-b728-4eba-8fe1-0634fd40cfbf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_2ac75cc0-42fd-49b9-bc2a-d017f0d18626" 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_abaf82c2-b728-4eba-8fe1-0634fd40cfbf" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_2ac75cc0-42fd-49b9-bc2a-d017f0d18626" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2ac75cc0-42fd-49b9-bc2a-d017f0d18626_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_2ac75cc0-42fd-49b9-bc2a-d017f0d18626" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2ac75cc0-42fd-49b9-bc2a-d017f0d18626_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4f65fa1c-26b3-4038-ac15-a84fdded7832" 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_2ac75cc0-42fd-49b9-bc2a-d017f0d18626" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4f65fa1c-26b3-4038-ac15-a84fdded7832" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_aaf43544-045b-40b4-b59f-c071881e7a6e" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4f65fa1c-26b3-4038-ac15-a84fdded7832" xlink:to="loc_fnf_FGMember_aaf43544-045b-40b4-b59f-c071881e7a6e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c6683be4-15c3-4aee-9518-5cf7f795aa37" 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_abaf82c2-b728-4eba-8fe1-0634fd40cfbf" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c6683be4-15c3-4aee-9518-5cf7f795aa37" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c6683be4-15c3-4aee-9518-5cf7f795aa37_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_c6683be4-15c3-4aee-9518-5cf7f795aa37" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c6683be4-15c3-4aee-9518-5cf7f795aa37_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_043c723c-2c24-4213-b0bf-76093fce240a" 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_c6683be4-15c3-4aee-9518-5cf7f795aa37" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_043c723c-2c24-4213-b0bf-76093fce240a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PVFPMember_05c6ed50-276d-4b2e-8981-1cf711c937a8" xlink:href="fnf-20200630.xsd#fnf_PVFPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_043c723c-2c24-4213-b0bf-76093fce240a" xlink:to="loc_fnf_PVFPMember_05c6ed50-276d-4b2e-8981-1cf711c937a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ValueOfDistributionAssetMember_fdd4b6d2-b263-403b-96e7-c4778efb7973" xlink:href="fnf-20200630.xsd#fnf_ValueOfDistributionAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_043c723c-2c24-4213-b0bf-76093fce240a" xlink:to="loc_fnf_ValueOfDistributionAssetMember_fdd4b6d2-b263-403b-96e7-c4778efb7973" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_50dca919-2220-4b64-92a3-49ff596493c6" 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_043c723c-2c24-4213-b0bf-76093fce240a" xlink:to="loc_us-gaap_TradeNamesMember_50dca919-2220-4b64-92a3-49ff596493c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_359a5867-5749-4189-ab0b-73a3225e1da5" 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_043c723c-2c24-4213-b0bf-76093fce240a" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_359a5867-5749-4189-ab0b-73a3225e1da5" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/AcquisitionsProFormaInformationDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#AcquisitionsProFormaInformationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/AcquisitionsProFormaInformationDetails" xlink:type="extended" id="i8daa018657a648d09ea5ce3b0f96f53b_AcquisitionsProFormaInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_2feec967-6876-4d51-8059-9f1c4f17be12" 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_badcfcab-2444-4ffc-8346-130a84587506" 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_2feec967-6876-4d51-8059-9f1c4f17be12" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_badcfcab-2444-4ffc-8346-130a84587506" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_d32a0cbe-d373-4ede-9c94-1520c3df43cb" 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_2feec967-6876-4d51-8059-9f1c4f17be12" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_d32a0cbe-d373-4ede-9c94-1520c3df43cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_35eaff5b-171f-4d80-a952-5ab1e628ec93" 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_2feec967-6876-4d51-8059-9f1c4f17be12" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_35eaff5b-171f-4d80-a952-5ab1e628ec93" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_45f896ac-a2a4-44b9-a8ab-9ce142264404" 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_35eaff5b-171f-4d80-a952-5ab1e628ec93" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_45f896ac-a2a4-44b9-a8ab-9ce142264404" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_45f896ac-a2a4-44b9-a8ab-9ce142264404_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_45f896ac-a2a4-44b9-a8ab-9ce142264404" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_45f896ac-a2a4-44b9-a8ab-9ce142264404_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9f5cde7c-e5c5-4ec3-8603-adeaa4068019" 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_45f896ac-a2a4-44b9-a8ab-9ce142264404" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9f5cde7c-e5c5-4ec3-8603-adeaa4068019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_0f5f8a41-5646-4b2a-9ef4-70c0fe9ea841" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9f5cde7c-e5c5-4ec3-8603-adeaa4068019" xlink:to="loc_fnf_FGMember_0f5f8a41-5646-4b2a-9ef4-70c0fe9ea841" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforTitleClaimLosses" xlink:type="simple" xlink:href="fnf-20200630.xsd#SummaryofReserveforTitleClaimLosses"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforTitleClaimLosses" xlink:type="extended" id="i551902a97dd5477fa126fa7ecbf9bc06_SummaryofReserveforTitleClaimLosses"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#SummaryofReserveforTitleClaimLossesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesTables" xlink:type="extended" id="ic9546a31d3104d0092b0465d36ec3497_SummaryofReserveforTitleClaimLossesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#SummaryofReserveforTitleClaimLossesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesDetails" xlink:type="extended" id="i381c61d7fda34933bd2ee19603275c24_SummaryofReserveforTitleClaimLossesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_df06f738-245b-449d-b3ac-c26a3a594940" 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_LiabilityForClaimsAndClaimsAdjustmentExpense_a0ff503a-4727-401c-8365-e741a33c1034" 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_LossContingenciesLineItems_df06f738-245b-449d-b3ac-c26a3a594940" xlink:to="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_a0ff503a-4727-401c-8365-e741a33c1034" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInReinsuranceRecoverable_10a655c5-18c7-4168-b42b-0434699ebdce" 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_LossContingenciesLineItems_df06f738-245b-449d-b3ac-c26a3a594940" xlink:to="loc_us-gaap_IncreaseDecreaseInReinsuranceRecoverable_10a655c5-18c7-4168-b42b-0434699ebdce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract_58fa6b02-14cf-4294-b068-2234ab3df16b" 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_LossContingenciesLineItems_df06f738-245b-449d-b3ac-c26a3a594940" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract_58fa6b02-14cf-4294-b068-2234ab3df16b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense_8aca9c6b-b3f0-468e-990f-c1bc2dc519ab" 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_58fa6b02-14cf-4294-b068-2234ab3df16b" xlink:to="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense_8aca9c6b-b3f0-468e-990f-c1bc2dc519ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense_40630ce9-d690-4a77-851f-1a31acca1ca3" 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_58fa6b02-14cf-4294-b068-2234ab3df16b" xlink:to="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense_40630ce9-d690-4a77-851f-1a31acca1ca3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1_844c7786-0d4c-45e6-8d78-ff352a5a3234" 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_58fa6b02-14cf-4294-b068-2234ab3df16b" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1_844c7786-0d4c-45e6-8d78-ff352a5a3234" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract_15e725db-9dd8-45ca-933b-444e094f0f6d" 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_LossContingenciesLineItems_df06f738-245b-449d-b3ac-c26a3a594940" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract_15e725db-9dd8-45ca-933b-444e094f0f6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1_658b5043-b497-42e0-9345-d4493ab0cf25" 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_15e725db-9dd8-45ca-933b-444e094f0f6d" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1_658b5043-b497-42e0-9345-d4493ab0cf25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1_18ffc525-37b2-4e1d-95af-fb0a443d977f" 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_15e725db-9dd8-45ca-933b-444e094f0f6d" xlink:to="loc_us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1_18ffc525-37b2-4e1d-95af-fb0a443d977f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForLossesAndLossAdjustmentExpense_172549b8-a3b4-469e-9ebf-d676934d0668" 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_15e725db-9dd8-45ca-933b-444e094f0f6d" xlink:to="loc_us-gaap_PaymentsForLossesAndLossAdjustmentExpense_172549b8-a3b4-469e-9ebf-d676934d0668" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_43c2796a-308c-4903-87c2-ae5ef98802d2" 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_f39724cf-00c7-424a-ae96-71ea4f3a4b54" xlink:href="fnf-20200630.xsd#fnf_ProvisionForTitleInsuranceClaimsOnCurrentYearPolicies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_df06f738-245b-449d-b3ac-c26a3a594940" xlink:to="loc_fnf_ProvisionForTitleInsuranceClaimsOnCurrentYearPolicies_f39724cf-00c7-424a-ae96-71ea4f3a4b54" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_458690bf-6c45-4fca-9e63-3e92d56cdcaf" 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_df06f738-245b-449d-b3ac-c26a3a594940" xlink:to="loc_us-gaap_LossContingenciesTable_458690bf-6c45-4fca-9e63-3e92d56cdcaf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_05cea4fb-9835-45d7-bf28-cd3c7a665cb5" 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_458690bf-6c45-4fca-9e63-3e92d56cdcaf" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_05cea4fb-9835-45d7-bf28-cd3c7a665cb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_05cea4fb-9835-45d7-bf28-cd3c7a665cb5_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_05cea4fb-9835-45d7-bf28-cd3c7a665cb5" xlink:to="loc_us-gaap_SegmentDomain_05cea4fb-9835-45d7-bf28-cd3c7a665cb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6a8714c1-3402-40e3-8807-8398fcfd9780" 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_05cea4fb-9835-45d7-bf28-cd3c7a665cb5" xlink:to="loc_us-gaap_SegmentDomain_6a8714c1-3402-40e3-8807-8398fcfd9780" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_b6888872-70cf-47dd-8f73-7c5d1e86ecef" xlink:href="fnf-20200630.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_6a8714c1-3402-40e3-8807-8398fcfd9780" xlink:to="loc_fnf_TitleSegmentMember_b6888872-70cf-47dd-8f73-7c5d1e86ecef" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#SummaryofReserveforTitleClaimLossesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SummaryofReserveforTitleClaimLossesNarrativeDetails" xlink:type="extended" id="i99ab9ca023bc47a4b5b6a0452717ea9b_SummaryofReserveforTitleClaimLossesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_e7bb2980-fb45-4578-a7f7-0f4e65dbd06f" 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_6b7e0886-d1c8-40c6-b3aa-4ae4d76e693d" 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_e7bb2980-fb45-4578-a7f7-0f4e65dbd06f" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue_6b7e0886-d1c8-40c6-b3aa-4ae4d76e693d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_0a8dfe14-bd97-48fc-938f-0f2e860c7f65" 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_e7bb2980-fb45-4578-a7f7-0f4e65dbd06f" xlink:to="loc_us-gaap_LossContingenciesTable_0a8dfe14-bd97-48fc-938f-0f2e860c7f65" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusAxis_10233d70-f616-4b2c-aef8-ec57a7d61776" 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_0a8dfe14-bd97-48fc-938f-0f2e860c7f65" xlink:to="loc_us-gaap_LitigationStatusAxis_10233d70-f616-4b2c-aef8-ec57a7d61776" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_10233d70-f616-4b2c-aef8-ec57a7d61776_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_10233d70-f616-4b2c-aef8-ec57a7d61776" xlink:to="loc_us-gaap_LitigationStatusDomain_10233d70-f616-4b2c-aef8-ec57a7d61776_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_c1794cbb-21e1-4d64-b420-5bb57b08fa59" 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_10233d70-f616-4b2c-aef8-ec57a7d61776" xlink:to="loc_us-gaap_LitigationStatusDomain_c1794cbb-21e1-4d64-b420-5bb57b08fa59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PendingLitigationMember_7308efbb-0c0f-43bb-bd1c-8ec09cf2e78b" 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_c1794cbb-21e1-4d64-b420-5bb57b08fa59" xlink:to="loc_us-gaap_PendingLitigationMember_7308efbb-0c0f-43bb-bd1c-8ec09cf2e78b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_cfdfb899-3b27-4fd0-aa12-e0122f12d449" 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_0a8dfe14-bd97-48fc-938f-0f2e860c7f65" xlink:to="loc_srt_LitigationCaseAxis_cfdfb899-3b27-4fd0-aa12-e0122f12d449" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_cfdfb899-3b27-4fd0-aa12-e0122f12d449_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_cfdfb899-3b27-4fd0-aa12-e0122f12d449" xlink:to="loc_srt_LitigationCaseTypeDomain_cfdfb899-3b27-4fd0-aa12-e0122f12d449_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" 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_cfdfb899-3b27-4fd0-aa12-e0122f12d449" xlink:to="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OvationFin.Holdings2LLCOvationFundMgmt.IILLCBancofCaliforniaN.A.v.ChicagoTitleIns.Co.ChicagoTitleCo.CaseNo.319cv02031GPCKSCMember_29ea6fb9-46c1-4784-8acd-76de05ccdbf0" xlink:href="fnf-20200630.xsd#fnf_OvationFin.Holdings2LLCOvationFundMgmt.IILLCBancofCaliforniaN.A.v.ChicagoTitleIns.Co.ChicagoTitleCo.CaseNo.319cv02031GPCKSCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_OvationFin.Holdings2LLCOvationFundMgmt.IILLCBancofCaliforniaN.A.v.ChicagoTitleIns.Co.ChicagoTitleCo.CaseNo.319cv02031GPCKSCMember_29ea6fb9-46c1-4784-8acd-76de05ccdbf0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_KimFundingLLCKimHPetersonJosephJCohenAndABCFundingStrategiesLLCVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_8bcdc930-cb9b-4cc6-8a2d-dc39390bb293" xlink:href="fnf-20200630.xsd#fnf_KimFundingLLCKimHPetersonJosephJCohenAndABCFundingStrategiesLLCVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_KimFundingLLCKimHPetersonJosephJCohenAndABCFundingStrategiesLLCVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_8bcdc930-cb9b-4cc6-8a2d-dc39390bb293" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WakefieldCapitalLLCWakefieldInvestmentsLLC2BudzHoldingLLCDougAndKristineHeidrichAndJeffAndHeidiOrrVChicagoTitleCoAndChicagoTitleInsCoMember_0c9afe58-04cd-41b8-bb3f-582e3fb079df" xlink:href="fnf-20200630.xsd#fnf_WakefieldCapitalLLCWakefieldInvestmentsLLC2BudzHoldingLLCDougAndKristineHeidrichAndJeffAndHeidiOrrVChicagoTitleCoAndChicagoTitleInsCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_WakefieldCapitalLLCWakefieldInvestmentsLLC2BudzHoldingLLCDougAndKristineHeidrichAndJeffAndHeidiOrrVChicagoTitleCoAndChicagoTitleInsCoMember_0c9afe58-04cd-41b8-bb3f-582e3fb079df" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RandolphLLevinEtAlVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeBettyElixmanEtAlMember_5b12d28e-fa3f-412b-83cb-8f9951341247" xlink:href="fnf-20200630.xsd#fnf_RandolphLLevinEtAlVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeBettyElixmanEtAlMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_RandolphLLevinEtAlVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeBettyElixmanEtAlMember_5b12d28e-fa3f-412b-83cb-8f9951341247" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MarkAthertonEtAlVChicagoTitleCoAndChicagoTitleInsCoMember_850d5b4d-9d10-497d-8b4b-2fac4c6d140c" xlink:href="fnf-20200630.xsd#fnf_MarkAthertonEtAlVChicagoTitleCoAndChicagoTitleInsCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_MarkAthertonEtAlVChicagoTitleCoAndChicagoTitleInsCoMember_850d5b4d-9d10-497d-8b4b-2fac4c6d140c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SusanHellerFenleySeparatePropertyTrustSusanHellerFenleyInheritedRothIRAShelleyLynnTarditiTrustAndROJLLCVChicagoTitleCoChicagoTitleInsCoMember_4b929c17-5ccc-4cb6-8b8d-38cee30331bf" xlink:href="fnf-20200630.xsd#fnf_SusanHellerFenleySeparatePropertyTrustSusanHellerFenleyInheritedRothIRAShelleyLynnTarditiTrustAndROJLLCVChicagoTitleCoChicagoTitleInsCoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_SusanHellerFenleySeparatePropertyTrustSusanHellerFenleyInheritedRothIRAShelleyLynnTarditiTrustAndROJLLCVChicagoTitleCoChicagoTitleInsCoMember_4b929c17-5ccc-4cb6-8b8d-38cee30331bf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_YuanYuAndPollyYuVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_ce416307-7d6f-4b07-9f5e-b64d316037da" xlink:href="fnf-20200630.xsd#fnf_YuanYuAndPollyYuVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_YuanYuAndPollyYuVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_ce416307-7d6f-4b07-9f5e-b64d316037da" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LauriePetersonVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_1b282611-943d-4d65-b874-622184dbfae0" xlink:href="fnf-20200630.xsd#fnf_LauriePetersonVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d32c8735-45b1-4e3f-8ca9-0ce6671dc3db" xlink:to="loc_fnf_LauriePetersonVChicagoTitleCoChicagoTitleInsCoThomasSchwiebertAdelleDucharmeAndBettyElixmanMember_1b282611-943d-4d65-b874-622184dbfae0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01dcce0a-ba1f-4c1d-8e03-693c14eec007" 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_LossContingenciesTable_0a8dfe14-bd97-48fc-938f-0f2e860c7f65" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01dcce0a-ba1f-4c1d-8e03-693c14eec007" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01dcce0a-ba1f-4c1d-8e03-693c14eec007_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_01dcce0a-ba1f-4c1d-8e03-693c14eec007" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01dcce0a-ba1f-4c1d-8e03-693c14eec007_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_44cc148c-5351-4e1a-9793-784a5206cad9" 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_01dcce0a-ba1f-4c1d-8e03-693c14eec007" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_44cc148c-5351-4e1a-9793-784a5206cad9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_222ae429-12d8-4079-bf64-1aeedb0ba3c2" 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_44cc148c-5351-4e1a-9793-784a5206cad9" xlink:to="loc_us-gaap_SubsequentEventMember_222ae429-12d8-4079-bf64-1aeedb0ba3c2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstruments" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstruments"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstruments" xlink:type="extended" id="i2798a13b0a1646bc94201f55dd57a6df_FairValueofFinancialInstruments"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstrumentsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsTables" xlink:type="extended" id="i92f6a08184b84226a151240747c74578_FairValueofFinancialInstrumentsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails" xlink:type="extended" id="ifaa7fbcd4549423381b7e88e4a0fd46f_FairValueofFinancialInstrumentsCarryingAmountsofAssetsandLiabilitiesatEstimatedFairValueMeasuredonaRecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_89c3b574-2cac-447c-97bd-813539d676ef" 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_d17b0d99-f417-49c8-bfbd-6513ecc1127b" 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_89c3b574-2cac-447c-97bd-813539d676ef" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_6875121d-2694-4cd2-bdb8-9f20deb7689a" 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_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_6875121d-2694-4cd2-bdb8-9f20deb7689a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_2454c87d-7a5d-49be-8c4a-e06d4024c4ae" 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_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_2454c87d-7a5d-49be-8c4a-e06d4024c4ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_6c57d5c6-febc-4fac-86c5-6e44d9ba84a2" 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_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_6c57d5c6-febc-4fac-86c5-6e44d9ba84a2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_88d1a09f-26de-4538-a55c-23ed6a76703b" 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_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:to="loc_us-gaap_DerivativeAssets_88d1a09f-26de-4538-a55c-23ed6a76703b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ShortTermInvestmentsFairValue_0aca500f-bd6b-46a1-bcd6-4910b7c23799" xlink:href="fnf-20200630.xsd#fnf_ShortTermInvestmentsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:to="loc_fnf_ShortTermInvestmentsFairValue_0aca500f-bd6b-46a1-bcd6-4910b7c23799" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsFairValueDisclosure_a4a8905a-3b41-4c30-ba26-489e4d7499bc" 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_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:to="loc_us-gaap_OtherAssetsFairValueDisclosure_a4a8905a-3b41-4c30-ba26-489e4d7499bc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_45023a58-425a-43b8-b03e-805172f6d5f4" 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_d17b0d99-f417-49c8-bfbd-6513ecc1127b" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_45023a58-425a-43b8-b03e-805172f6d5f4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_48ac9464-6658-4b77-b2a8-753925f504ff" 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_89c3b574-2cac-447c-97bd-813539d676ef" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_48ac9464-6658-4b77-b2a8-753925f504ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsFairValue_76c1b9c1-2965-4985-af8f-1fa1234259fe" xlink:href="fnf-20200630.xsd#fnf_FuturePolicyBenefitsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_48ac9464-6658-4b77-b2a8-753925f504ff" xlink:to="loc_fnf_FuturePolicyBenefitsFairValue_76c1b9c1-2965-4985-af8f-1fa1234259fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsAbstract_24973247-c125-47d2-85ee-22db30071c3c" 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_89c3b574-2cac-447c-97bd-813539d676ef" xlink:to="loc_us-gaap_DerivativeAssetsAbstract_24973247-c125-47d2-85ee-22db30071c3c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_4cc909ae-dd88-45e0-8526-1bd759128d32" 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_24973247-c125-47d2-85ee-22db30071c3c" xlink:to="loc_us-gaap_DerivativeLiabilities_4cc909ae-dd88-45e0-8526-1bd759128d32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialLiabilitiesFairValueDisclosure_1777ff2f-5677-4ec0-a6d0-bef1c288e275" 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_89c3b574-2cac-447c-97bd-813539d676ef" xlink:to="loc_us-gaap_FinancialLiabilitiesFairValueDisclosure_1777ff2f-5677-4ec0-a6d0-bef1c288e275" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_40526c95-8081-46a1-9769-ec6084d502b6" 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_89c3b574-2cac-447c-97bd-813539d676ef" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_40526c95-8081-46a1-9769-ec6084d502b6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_2991ac3e-e194-4839-aca3-26f3aa65579d" 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_40526c95-8081-46a1-9769-ec6084d502b6" xlink:to="loc_us-gaap_FinancialInstrumentAxis_2991ac3e-e194-4839-aca3-26f3aa65579d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2991ac3e-e194-4839-aca3-26f3aa65579d_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_2991ac3e-e194-4839-aca3-26f3aa65579d" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2991ac3e-e194-4839-aca3-26f3aa65579d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_e1370485-68a4-41c0-88c6-ef9b054bb739" 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_2991ac3e-e194-4839-aca3-26f3aa65579d" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_64dc2a9a-9553-4761-9c1c-defe4b8632b8" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_64dc2a9a-9553-4761-9c1c-defe4b8632b8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_e7bd9665-7a0f-4223-8d0c-e2d96b842aa3" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_e7bd9665-7a0f-4223-8d0c-e2d96b842aa3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_e8625840-52d2-4ab3-aebb-970e7a3c2be0" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_e8625840-52d2-4ab3-aebb-970e7a3c2be0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_3237c26d-7504-4302-b6c3-645776ed9049" xlink:href="fnf-20200630.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_fnf_HybridsMember_3237c26d-7504-4302-b6c3-645776ed9049" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_d53e1781-136b-4086-97d6-97b37038a1ef" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_d53e1781-136b-4086-97d6-97b37038a1ef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_f8455292-135b-4d60-83b9-af3b942eb54d" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_f8455292-135b-4d60-83b9-af3b942eb54d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_b55eea82-106a-4fc2-84d4-3182666def19" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_b55eea82-106a-4fc2-84d4-3182666def19" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_4fcc4745-8c9f-4760-9a54-9b9c5d60cd1f" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_4fcc4745-8c9f-4760-9a54-9b9c5d60cd1f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_fbdfd565-db10-46d7-9c3d-80a43c751c77" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_CommonStockMember_fbdfd565-db10-46d7-9c3d-80a43c751c77" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_e05ad2f9-94a0-4027-a010-9895b3227438" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_PreferredStockMember_e05ad2f9-94a0-4027-a010-9895b3227438" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermInvestmentsMember_b5e508b9-6dda-4338-b1cd-700b736bb5f6" 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_e1370485-68a4-41c0-88c6-ef9b054bb739" xlink:to="loc_us-gaap_OtherLongTermInvestmentsMember_b5e508b9-6dda-4338-b1cd-700b736bb5f6" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_c6482f2c-0117-4e84-8f02-1c9cb7031512" 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_40526c95-8081-46a1-9769-ec6084d502b6" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_c6482f2c-0117-4e84-8f02-1c9cb7031512" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_c6482f2c-0117-4e84-8f02-1c9cb7031512_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_c6482f2c-0117-4e84-8f02-1c9cb7031512" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_c6482f2c-0117-4e84-8f02-1c9cb7031512_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_26d67a06-d2bb-49b1-8cd8-2bb2a3f829fc" 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_c6482f2c-0117-4e84-8f02-1c9cb7031512" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_26d67a06-d2bb-49b1-8cd8-2bb2a3f829fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedIndexAnnuityMember_647ca4da-a05b-41f2-98a1-7da7ee24ca40" xlink:href="fnf-20200630.xsd#fnf_FixedIndexAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_26d67a06-d2bb-49b1-8cd8-2bb2a3f829fc" xlink:to="loc_fnf_FixedIndexAnnuityMember_647ca4da-a05b-41f2-98a1-7da7ee24ca40" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_9263011d-1eb0-4891-966b-9cafb66cff99" xlink:href="fnf-20200630.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_26d67a06-d2bb-49b1-8cd8-2bb2a3f829fc" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_9263011d-1eb0-4891-966b-9cafb66cff99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_be92d4a3-b8a0-4cd3-bd6e-06ebf2d1067c" 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_40526c95-8081-46a1-9769-ec6084d502b6" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_be92d4a3-b8a0-4cd3-bd6e-06ebf2d1067c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_be92d4a3-b8a0-4cd3-bd6e-06ebf2d1067c_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_be92d4a3-b8a0-4cd3-bd6e-06ebf2d1067c" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_be92d4a3-b8a0-4cd3-bd6e-06ebf2d1067c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_bed4fcee-0a38-4c44-959f-2c86bb6028d8" 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_be92d4a3-b8a0-4cd3-bd6e-06ebf2d1067c" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_bed4fcee-0a38-4c44-959f-2c86bb6028d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_df40611d-24d6-4a5a-ad0c-a253aaefdb3b" 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_bed4fcee-0a38-4c44-959f-2c86bb6028d8" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_df40611d-24d6-4a5a-ad0c-a253aaefdb3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_d88e30b5-9247-4429-9d19-65f36e06b3db" 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_bed4fcee-0a38-4c44-959f-2c86bb6028d8" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_d88e30b5-9247-4429-9d19-65f36e06b3db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_25fc6eaa-838e-4a73-ae44-504c1d0ce85c" 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_bed4fcee-0a38-4c44-959f-2c86bb6028d8" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_25fc6eaa-838e-4a73-ae44-504c1d0ce85c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_cb92222e-3a99-4fa4-b824-f3d869612bf8" 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_40526c95-8081-46a1-9769-ec6084d502b6" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_cb92222e-3a99-4fa4-b824-f3d869612bf8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_cb92222e-3a99-4fa4-b824-f3d869612bf8_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_cb92222e-3a99-4fa4-b824-f3d869612bf8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_cb92222e-3a99-4fa4-b824-f3d869612bf8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_17cfb875-4275-4c1d-b2db-92924f5e467b" 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_cb92222e-3a99-4fa4-b824-f3d869612bf8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_17cfb875-4275-4c1d-b2db-92924f5e467b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_2522c31c-b5f1-400c-8530-f97876d5c273" 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_17cfb875-4275-4c1d-b2db-92924f5e467b" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_2522c31c-b5f1-400c-8530-f97876d5c273" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_9441eed8-7ec3-42e2-b591-0384438a3789" 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_17cfb875-4275-4c1d-b2db-92924f5e467b" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_9441eed8-7ec3-42e2-b591-0384438a3789" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_48bb243e-1f5f-4986-a312-33c950ee9278" 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_17cfb875-4275-4c1d-b2db-92924f5e467b" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_48bb243e-1f5f-4986-a312-33c950ee9278" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsNarrativeDetail" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstrumentsNarrativeDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsNarrativeDetail" xlink:type="extended" id="i0bcb1b55c0934b02bbb2c84bf0315288_FairValueofFinancialInstrumentsNarrativeDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_0e6200c1-98e8-43ba-966a-696a7ebd5a16" 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_fa57f015-6704-44c5-811e-20c33920b098" 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_0e6200c1-98e8-43ba-966a-696a7ebd5a16" xlink:to="loc_us-gaap_DerivativePriceRiskOptionStrikePrice_fa57f015-6704-44c5-811e-20c33920b098" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UndiscountedCashflowsusedinfairvaluemeasurement_1d5949bd-4ef8-4d44-970b-9b5bf5fefcec" xlink:href="fnf-20200630.xsd#fnf_UndiscountedCashflowsusedinfairvaluemeasurement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_0e6200c1-98e8-43ba-966a-696a7ebd5a16" xlink:to="loc_fnf_UndiscountedCashflowsusedinfairvaluemeasurement_1d5949bd-4ef8-4d44-970b-9b5bf5fefcec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5c6233bc-4394-47b1-b16b-ccd1b11aec97" 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_0e6200c1-98e8-43ba-966a-696a7ebd5a16" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5c6233bc-4394-47b1-b16b-ccd1b11aec97" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_265b2b5d-e530-4ab4-a760-97c00a0d89fe" 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_5c6233bc-4394-47b1-b16b-ccd1b11aec97" xlink:to="loc_us-gaap_FinancialInstrumentAxis_265b2b5d-e530-4ab4-a760-97c00a0d89fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_265b2b5d-e530-4ab4-a760-97c00a0d89fe_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_265b2b5d-e530-4ab4-a760-97c00a0d89fe" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_265b2b5d-e530-4ab4-a760-97c00a0d89fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0f45e925-0680-4409-b757-aed1108dac04" 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_265b2b5d-e530-4ab4-a760-97c00a0d89fe" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0f45e925-0680-4409-b757-aed1108dac04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherInvestedAssetsMember_7f6ff2a3-27fe-428a-9fbc-944f7082c2f4" xlink:href="fnf-20200630.xsd#fnf_OtherInvestedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0f45e925-0680-4409-b757-aed1108dac04" xlink:to="loc_fnf_OtherInvestedAssetsMember_7f6ff2a3-27fe-428a-9fbc-944f7082c2f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_287462e6-03f8-4e23-baff-225c4ebe2101" 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_5c6233bc-4394-47b1-b16b-ccd1b11aec97" xlink:to="loc_us-gaap_ValuationTechniqueAxis_287462e6-03f8-4e23-baff-225c4ebe2101" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_287462e6-03f8-4e23-baff-225c4ebe2101_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_287462e6-03f8-4e23-baff-225c4ebe2101" xlink:to="loc_us-gaap_ValuationTechniqueDomain_287462e6-03f8-4e23-baff-225c4ebe2101_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_8bfeebc0-b72a-47ab-bb43-116bd9764ce1" 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_287462e6-03f8-4e23-baff-225c4ebe2101" xlink:to="loc_us-gaap_ValuationTechniqueDomain_8bfeebc0-b72a-47ab-bb43-116bd9764ce1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeApproachValuationTechniqueMember_d24bda2a-cf27-40d5-8973-f80e70d7f3ea" 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_8bfeebc0-b72a-47ab-bb43-116bd9764ce1" xlink:to="loc_us-gaap_IncomeApproachValuationTechniqueMember_d24bda2a-cf27-40d5-8973-f80e70d7f3ea" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail" xlink:type="extended" id="i1ada260849264e96b91f663bf1c5bc9a_FairValueofFinancialInstrumentsQuantitativeInformationofUnobservableInputsUsedforLevelThreeFairValueMeasurementsofFinancialInstrumentsonRecurringBasisDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" 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_90c9e409-d4e1-4a5d-b631-b0a79e0e0f33" 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_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_90c9e409-d4e1-4a5d-b631-b0a79e0e0f33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_66ac2a9c-33c2-4e4f-a85d-02ca208f075f" 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_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_66ac2a9c-33c2-4e4f-a85d-02ca208f075f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsQuotedPrices_a2ccf6ca-cdba-471e-8b06-5b2b1b27ff6e" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsQuotedPrices"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsQuotedPrices_a2ccf6ca-cdba-471e-8b06-5b2b1b27ff6e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputYield_0a3e342a-084d-4cbc-984e-3dbbc663edbe" xlink:href="fnf-20200630.xsd#fnf_FairValueInputYield"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputYield_0a3e342a-084d-4cbc-984e-3dbbc663edbe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsBlackScholesModel_b3f12e44-4430-44be-a45c-be623ec9d804" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsBlackScholesModel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsBlackScholesModel_b3f12e44-4430-44be-a45c-be623ec9d804" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsNonPerformanceSpread_a182d75e-935b-4e36-ad81-b84a6c130427" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsNonPerformanceSpread"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsNonPerformanceSpread_a182d75e-935b-4e36-ad81-b84a6c130427" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RiskMarginToReflectUncertainty_42639354-075d-477c-a335-2362f83762e2" xlink:href="fnf-20200630.xsd#fnf_RiskMarginToReflectUncertainty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_RiskMarginToReflectUncertainty_42639354-075d-477c-a335-2362f83762e2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsMarketValueOfOption_48fb58c8-c64e-4aff-8973-d77419f90e88" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsMarketValueOfOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsMarketValueOfOption_48fb58c8-c64e-4aff-8973-d77419f90e88" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsTreasuryRates_2dad0d4c-ccaf-4e2b-b300-bf3ffef8b716" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsTreasuryRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsTreasuryRates_2dad0d4c-ccaf-4e2b-b300-bf3ffef8b716" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsMortalityMultiplier_eba34e2a-aa1a-48bf-8c09-8d66d700a9d9" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsMortalityMultiplier"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsMortalityMultiplier_eba34e2a-aa1a-48bf-8c09-8d66d700a9d9" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsSurrenderRates_bcb21a0f-9925-401e-97a9-89d927cce549" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsSurrenderRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsSurrenderRates_bcb21a0f-9925-401e-97a9-89d927cce549" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputsPartialWithdrawals_d6d8a2a2-7a06-4270-9d6a-5448fde17a56" xlink:href="fnf-20200630.xsd#fnf_FairValueInputsPartialWithdrawals"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputsPartialWithdrawals_d6d8a2a2-7a06-4270-9d6a-5448fde17a56" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueInputOptionCost_e07b1b06-a0e6-4710-b9a0-ba14d63d9071" xlink:href="fnf-20200630.xsd#fnf_FairValueInputOptionCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_fnf_FairValueInputOptionCost_e07b1b06-a0e6-4710-b9a0-ba14d63d9071" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_599879f0-b015-4630-af55-a8fd7da0a3dd" 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_61a18d80-575a-434b-aa69-5731db58e1ef" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_599879f0-b015-4630-af55-a8fd7da0a3dd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d611183e-ace6-40fb-87bb-1ac7021e824f" 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_599879f0-b015-4630-af55-a8fd7da0a3dd" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d611183e-ace6-40fb-87bb-1ac7021e824f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d611183e-ace6-40fb-87bb-1ac7021e824f_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_d611183e-ace6-40fb-87bb-1ac7021e824f" xlink:to="loc_us-gaap_RelatedPartyDomain_d611183e-ace6-40fb-87bb-1ac7021e824f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_16991e54-f381-4c84-b7fe-ee7253509b9c" 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_d611183e-ace6-40fb-87bb-1ac7021e824f" xlink:to="loc_us-gaap_RelatedPartyDomain_16991e54-f381-4c84-b7fe-ee7253509b9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_14063311-7bc1-46e7-8ec0-41e001e01019" 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_16991e54-f381-4c84-b7fe-ee7253509b9c" xlink:to="loc_srt_AffiliatedEntityMember_14063311-7bc1-46e7-8ec0-41e001e01019" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_58b60e07-bc63-4e0b-984f-ba66e68c05f4" 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_599879f0-b015-4630-af55-a8fd7da0a3dd" xlink:to="loc_srt_RangeAxis_58b60e07-bc63-4e0b-984f-ba66e68c05f4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_58b60e07-bc63-4e0b-984f-ba66e68c05f4_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_58b60e07-bc63-4e0b-984f-ba66e68c05f4" xlink:to="loc_srt_RangeMember_58b60e07-bc63-4e0b-984f-ba66e68c05f4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a392cf14-e2e6-45f9-bd0c-0222d03d9832" 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_58b60e07-bc63-4e0b-984f-ba66e68c05f4" xlink:to="loc_srt_RangeMember_a392cf14-e2e6-45f9-bd0c-0222d03d9832" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_7b086ba7-3404-455a-a97d-db1e1bd68907" 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_a392cf14-e2e6-45f9-bd0c-0222d03d9832" xlink:to="loc_srt_MinimumMember_7b086ba7-3404-455a-a97d-db1e1bd68907" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_b3b40014-b25e-4954-a5fa-14a49d75461c" 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_a392cf14-e2e6-45f9-bd0c-0222d03d9832" xlink:to="loc_srt_MaximumMember_b3b40014-b25e-4954-a5fa-14a49d75461c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_e6ab3566-f933-427b-b039-364972e8c4a5" 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_a392cf14-e2e6-45f9-bd0c-0222d03d9832" xlink:to="loc_srt_WeightedAverageMember_e6ab3566-f933-427b-b039-364972e8c4a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_988b603b-3b3e-452c-8097-ed17091df17f" 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_599879f0-b015-4630-af55-a8fd7da0a3dd" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_988b603b-3b3e-452c-8097-ed17091df17f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_988b603b-3b3e-452c-8097-ed17091df17f_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_988b603b-3b3e-452c-8097-ed17091df17f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_988b603b-3b3e-452c-8097-ed17091df17f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_5a5bf0f7-b79b-48a1-a4cf-f01f57a6d8a5" 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_988b603b-3b3e-452c-8097-ed17091df17f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_5a5bf0f7-b79b-48a1-a4cf-f01f57a6d8a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsMember_9216c1a7-fb60-4314-a3e9-c6183501c711" xlink:href="fnf-20200630.xsd#fnf_FuturePolicyBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_5a5bf0f7-b79b-48a1-a4cf-f01f57a6d8a5" xlink:to="loc_fnf_FuturePolicyBenefitsMember_9216c1a7-fb60-4314-a3e9-c6183501c711" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedIndexAnnuityMember_cddabb9c-91a2-476b-98f4-c800f65970f8" xlink:href="fnf-20200630.xsd#fnf_FixedIndexAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_5a5bf0f7-b79b-48a1-a4cf-f01f57a6d8a5" xlink:to="loc_fnf_FixedIndexAnnuityMember_cddabb9c-91a2-476b-98f4-c800f65970f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_f56bf267-4fec-4594-b264-853ab5c0c95a" 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_599879f0-b015-4630-af55-a8fd7da0a3dd" xlink:to="loc_us-gaap_ValuationTechniqueAxis_f56bf267-4fec-4594-b264-853ab5c0c95a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_f56bf267-4fec-4594-b264-853ab5c0c95a_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_f56bf267-4fec-4594-b264-853ab5c0c95a" xlink:to="loc_us-gaap_ValuationTechniqueDomain_f56bf267-4fec-4594-b264-853ab5c0c95a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_6c2ec0f8-f67e-4d28-a8f0-cf144d137327" 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_f56bf267-4fec-4594-b264-853ab5c0c95a" xlink:to="loc_us-gaap_ValuationTechniqueDomain_6c2ec0f8-f67e-4d28-a8f0-cf144d137327" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketApproachValuationTechniqueMember_860a36b6-a2b9-4b21-aa65-878b512db32b" 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_6c2ec0f8-f67e-4d28-a8f0-cf144d137327" xlink:to="loc_us-gaap_MarketApproachValuationTechniqueMember_860a36b6-a2b9-4b21-aa65-878b512db32b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ThirdPartyValuationTechniqueMember_444f889f-c861-41e4-80ea-35761b9373bb" xlink:href="fnf-20200630.xsd#fnf_ThirdPartyValuationTechniqueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_6c2ec0f8-f67e-4d28-a8f0-cf144d137327" xlink:to="loc_fnf_ThirdPartyValuationTechniqueMember_444f889f-c861-41e4-80ea-35761b9373bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeApproachValuationTechniqueMember_268fbf50-3710-4a39-a466-a4ec8eef7812" 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_6c2ec0f8-f67e-4d28-a8f0-cf144d137327" xlink:to="loc_us-gaap_IncomeApproachValuationTechniqueMember_268fbf50-3710-4a39-a466-a4ec8eef7812" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BlackScholesModelMember_28e9e32f-e260-405e-8d2c-3a5cdd519d34" xlink:href="fnf-20200630.xsd#fnf_BlackScholesModelMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_6c2ec0f8-f67e-4d28-a8f0-cf144d137327" xlink:to="loc_fnf_BlackScholesModelMember_28e9e32f-e260-405e-8d2c-3a5cdd519d34" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_d65f1747-b40d-439b-87b9-72d8d0789802" 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_6c2ec0f8-f67e-4d28-a8f0-cf144d137327" xlink:to="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_d65f1747-b40d-439b-87b9-72d8d0789802" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_c40858a3-e279-40e9-a726-eff43794c72e" 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_599879f0-b015-4630-af55-a8fd7da0a3dd" xlink:to="loc_us-gaap_FinancialInstrumentAxis_c40858a3-e279-40e9-a726-eff43794c72e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_c40858a3-e279-40e9-a726-eff43794c72e_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_c40858a3-e279-40e9-a726-eff43794c72e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_c40858a3-e279-40e9-a726-eff43794c72e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_944f5486-5bcf-40a3-8a34-2e8430d1750b" 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_c40858a3-e279-40e9-a726-eff43794c72e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_734ca32c-969f-4ab7-935f-41f03a9e6279" 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_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_734ca32c-969f-4ab7-935f-41f03a9e6279" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_670df187-97a9-4a48-9ed8-8baac34ae957" 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_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_670df187-97a9-4a48-9ed8-8baac34ae957" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_585a2073-a22f-4150-9e5f-dbf157e2b807" 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_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_585a2073-a22f-4150-9e5f-dbf157e2b807" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_599a3b2f-5278-416d-a005-8ffd6c34be0f" xlink:href="fnf-20200630.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_fnf_HybridsMember_599a3b2f-5278-416d-a005-8ffd6c34be0f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_601bca90-d6ad-448a-b41d-53da1d28a461" 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_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_601bca90-d6ad-448a-b41d-53da1d28a461" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_7b108ec9-c4a9-4bc3-9724-96b436b645e5" 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_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_7b108ec9-c4a9-4bc3-9724-96b436b645e5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_da729960-5cbf-4217-ac97-71c20c9e5ac4" 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_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_da729960-5cbf-4217-ac97-71c20c9e5ac4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_d6e1e396-69d5-47b4-a900-06c3881fd22a" 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_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_us-gaap_EquitySecuritiesMember_d6e1e396-69d5-47b4-a900-06c3881fd22a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherInvestedAssetsMember_cd583584-7914-41ea-925e-8e7a24e0f70c" xlink:href="fnf-20200630.xsd#fnf_OtherInvestedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_fnf_OtherInvestedAssetsMember_cd583584-7914-41ea-925e-8e7a24e0f70c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CreditLinkedNoteMember_2e212735-1933-47a5-9e9d-c814bfeb0299" xlink:href="fnf-20200630.xsd#fnf_CreditLinkedNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_fnf_CreditLinkedNoteMember_2e212735-1933-47a5-9e9d-c814bfeb0299" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsNonperformanceRiskSpreadMember_6aeb31e6-31ba-40ba-960f-b9158d05e80e" xlink:href="fnf-20200630.xsd#fnf_FuturePolicyBenefitsNonperformanceRiskSpreadMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_944f5486-5bcf-40a3-8a34-2e8430d1750b" xlink:to="loc_fnf_FuturePolicyBenefitsNonperformanceRiskSpreadMember_6aeb31e6-31ba-40ba-960f-b9158d05e80e" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail" xlink:type="extended" id="i4d1457d1b58541e9a9f3b5ff1dd07c68_FairValueofFinancialInstrumentsChangestoFairValueofFinancialInstrumentsLevel3Detail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_bd5b96d6-5ddc-4b58-801d-b6517984a692" 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_709a9f04-6722-4298-9e0c-0ba269660e35" 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_bd5b96d6-5ddc-4b58-801d-b6517984a692" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_709a9f04-6722-4298-9e0c-0ba269660e35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_08bdde38-d33c-4bf9-90e3-b05514dead1f" 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_709a9f04-6722-4298-9e0c-0ba269660e35" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_08bdde38-d33c-4bf9-90e3-b05514dead1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_62244f1c-1313-485c-85d7-92e5c65e842c" 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_08bdde38-d33c-4bf9-90e3-b05514dead1f" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAbstract_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_79d25c42-b4a0-4e51-b08a-4c9799df0c10" 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_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_79d25c42-b4a0-4e51-b08a-4c9799df0c10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinations_71da5838-945e-45c3-a56a-ab78ba327af1" xlink:href="fnf-20200630.xsd#fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinations_71da5838-945e-45c3-a56a-ab78ba327af1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_0281073a-bacf-490d-8734-505ffbc6ab03" 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_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_0281073a-bacf-490d-8734-505ffbc6ab03" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_643e3821-cec9-484c-8805-ec7f946d2518" 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_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_643e3821-cec9-484c-8805-ec7f946d2518" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_b27ee0a6-4a47-4af7-ba1d-3146ac0e5e22" 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_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_b27ee0a6-4a47-4af7-ba1d-3146ac0e5e22" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_691dd007-6c53-48e2-b2fe-f270d1a65b0e" 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_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_691dd007-6c53-48e2-b2fe-f270d1a65b0e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_2d3ca85a-f227-4eb5-9729-00da2b15f986" 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_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_2d3ca85a-f227-4eb5-9729-00da2b15f986" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_af0153f9-def7-47cf-baee-1754d24edfcd" 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_62244f1c-1313-485c-85d7-92e5c65e842c" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_af0153f9-def7-47cf-baee-1754d24edfcd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_bdb4be89-f4e3-43d0-9773-a3462ce43049" 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_6de972c1-4c86-49e9-8ebe-3f48b422aeb3" 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_08bdde38-d33c-4bf9-90e3-b05514dead1f" xlink:to="loc_us-gaap_FairValueAssetRecurringBasisStillHeldUnrealizedGainLossOci_6de972c1-4c86-49e9-8ebe-3f48b422aeb3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" 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_709a9f04-6722-4298-9e0c-0ba269660e35" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_e9e73f0f-d8d6-44ae-80f7-d5621f106058" 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_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_e9e73f0f-d8d6-44ae-80f7-d5621f106058" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisBusinessCombinations_7276f644-aae6-438e-a256-0ff0ae5c84d1" xlink:href="fnf-20200630.xsd#fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisBusinessCombinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisBusinessCombinations_7276f644-aae6-438e-a256-0ff0ae5c84d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_15816fcb-e8ab-433a-9407-27276cad814c" 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_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_15816fcb-e8ab-433a-9407-27276cad814c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_2044e49d-14ae-46d9-8490-849fffeefe19" 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_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_2044e49d-14ae-46d9-8490-849fffeefe19" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_286f92cd-f921-4b21-8240-78334efb2df8" 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_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_286f92cd-f921-4b21-8240-78334efb2df8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales_c8994f23-15da-45f5-a4d9-2bfe10aaebfc" 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_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales_c8994f23-15da-45f5-a4d9-2bfe10aaebfc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_bb25a42b-b355-457e-8554-bb4b3ef5bb64" 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_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_bb25a42b-b355-457e-8554-bb4b3ef5bb64" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet_3a88f0ac-aa6a-4a04-ba68-4ca021a9d779" 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_86a0ac67-ccb0-4c49-8e83-6bd21ff15e3a" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet_3a88f0ac-aa6a-4a04-ba68-4ca021a9d779" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_0ab8ad74-86e9-4496-94b3-1a2a239d8f96" 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_8697f071-99f4-4b29-99b0-296690259aed" xlink:href="fnf-20200630.xsd#fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_709a9f04-6722-4298-9e0c-0ba269660e35" xlink:to="loc_fnf_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss_8697f071-99f4-4b29-99b0-296690259aed" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_3b580a66-6a95-4b52-99d9-5a81762819eb" 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_bd5b96d6-5ddc-4b58-801d-b6517984a692" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_3b580a66-6a95-4b52-99d9-5a81762819eb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_e8a23064-00af-4f0f-95f2-6e67c05e8072" 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_3b580a66-6a95-4b52-99d9-5a81762819eb" xlink:to="loc_us-gaap_FinancialInstrumentAxis_e8a23064-00af-4f0f-95f2-6e67c05e8072" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_e8a23064-00af-4f0f-95f2-6e67c05e8072_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_e8a23064-00af-4f0f-95f2-6e67c05e8072" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_e8a23064-00af-4f0f-95f2-6e67c05e8072_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ebed0e53-8529-4221-91aa-7dbc174bc38a" 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_e8a23064-00af-4f0f-95f2-6e67c05e8072" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_07c40e37-e1ed-4592-a33a-ab880b4a3b9b" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_07c40e37-e1ed-4592-a33a-ab880b4a3b9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_c7786f31-2666-450a-a11b-3812c4adc8aa" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_c7786f31-2666-450a-a11b-3812c4adc8aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_439477a6-ea54-4767-bf89-b776a5005a6e" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_439477a6-ea54-4767-bf89-b776a5005a6e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_5ab49f9d-dee5-4483-a985-1f8b29e996ef" xlink:href="fnf-20200630.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_fnf_HybridsMember_5ab49f9d-dee5-4483-a985-1f8b29e996ef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01d2ac9c-40be-49f6-be23-d8dbe4671120" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_01d2ac9c-40be-49f6-be23-d8dbe4671120" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_d370a285-ef7c-4022-b316-7edc452a4631" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_d370a285-ef7c-4022-b316-7edc452a4631" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_f5978d86-63b2-49ec-bdba-2ec431806cae" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_f5978d86-63b2-49ec-bdba-2ec431806cae" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_b07dc254-8176-4a56-81a1-919197f1b53e" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_EquitySecuritiesMember_b07dc254-8176-4a56-81a1-919197f1b53e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleEmbeddedDerivativesMember_32d2c8da-105b-478a-849d-47c7c68b519c" xlink:href="fnf-20200630.xsd#fnf_AvailableForSaleEmbeddedDerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_fnf_AvailableForSaleEmbeddedDerivativesMember_32d2c8da-105b-478a-849d-47c7c68b519c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankLoanObligationsMember_1b5631b9-b1f3-43d4-9bb4-c731a17965b6" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_BankLoanObligationsMember_1b5631b9-b1f3-43d4-9bb4-c731a17965b6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermInvestmentsMember_ec0c7160-37de-43d8-b6b6-7e90d678daed" 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_ebed0e53-8529-4221-91aa-7dbc174bc38a" xlink:to="loc_us-gaap_OtherLongTermInvestmentsMember_ec0c7160-37de-43d8-b6b6-7e90d678daed" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_2b67584f-61bc-4948-8494-1029a902227d" 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_3b580a66-6a95-4b52-99d9-5a81762819eb" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_2b67584f-61bc-4948-8494-1029a902227d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_2b67584f-61bc-4948-8494-1029a902227d_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_2b67584f-61bc-4948-8494-1029a902227d" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_2b67584f-61bc-4948-8494-1029a902227d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_8ddc5ee9-7e9f-4ff5-a947-f9273df937df" 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_2b67584f-61bc-4948-8494-1029a902227d" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_8ddc5ee9-7e9f-4ff5-a947-f9273df937df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FuturePolicyBenefitsMember_9f4a15f3-0276-47df-85d1-14b6fb05f764" xlink:href="fnf-20200630.xsd#fnf_FuturePolicyBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_8ddc5ee9-7e9f-4ff5-a947-f9273df937df" xlink:to="loc_fnf_FuturePolicyBenefitsMember_9f4a15f3-0276-47df-85d1-14b6fb05f764" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesIncludedInContractholderFundsMember_3ba7a686-e0d7-4b45-a482-3e3756a5345b" xlink:href="fnf-20200630.xsd#fnf_EmbeddedDerivativesIncludedInContractholderFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_8ddc5ee9-7e9f-4ff5-a947-f9273df937df" xlink:to="loc_fnf_EmbeddedDerivativesIncludedInContractholderFundsMember_3ba7a686-e0d7-4b45-a482-3e3756a5345b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails" xlink:type="extended" id="ifeb090a71c124cb9bb1cf456dbe63fed_FairValueofFinancialInstrumentsCarryingValueandEstimatedFairValueofFinancialInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_44b76879-a99d-4763-b64c-d6f3f70f5af4" 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_5e7f45f2-37a4-45aa-b60a-594d53bf815b" 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_44b76879-a99d-4763-b64c-d6f3f70f5af4" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_5e7f45f2-37a4-45aa-b60a-594d53bf815b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentsCommercialMortgageLoansFairValueDisclosure_d707da71-67d3-4ce5-bb55-f3e6358955f9" xlink:href="fnf-20200630.xsd#fnf_InvestmentsCommercialMortgageLoansFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5e7f45f2-37a4-45aa-b60a-594d53bf815b" xlink:to="loc_fnf_InvestmentsCommercialMortgageLoansFairValueDisclosure_d707da71-67d3-4ce5-bb55-f3e6358955f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentsResidentialMortgageLoansFairValueDisclosure_dd611f65-6342-42de-b15e-561d6aa57577" xlink:href="fnf-20200630.xsd#fnf_InvestmentsResidentialMortgageLoansFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5e7f45f2-37a4-45aa-b60a-594d53bf815b" xlink:to="loc_fnf_InvestmentsResidentialMortgageLoansFairValueDisclosure_dd611f65-6342-42de-b15e-561d6aa57577" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PolicyLoansFairValue_07cdf38c-fe1d-4c09-8644-8f2d0823bbc0" xlink:href="fnf-20200630.xsd#fnf_PolicyLoansFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5e7f45f2-37a4-45aa-b60a-594d53bf815b" xlink:to="loc_fnf_PolicyLoansFairValue_07cdf38c-fe1d-4c09-8644-8f2d0823bbc0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AssetscarriedonBalanceSheetatamountsotherthanfairvalue_7212654c-b6d3-4c38-ba50-c010d8fd6e22" xlink:href="fnf-20200630.xsd#fnf_AssetscarriedonBalanceSheetatamountsotherthanfairvalue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_5e7f45f2-37a4-45aa-b60a-594d53bf815b" xlink:to="loc_fnf_AssetscarriedonBalanceSheetatamountsotherthanfairvalue_7212654c-b6d3-4c38-ba50-c010d8fd6e22" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_c72a18f9-bc5c-43ee-80ad-ce78c370d0cf" 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_44b76879-a99d-4763-b64c-d6f3f70f5af4" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_c72a18f9-bc5c-43ee-80ad-ce78c370d0cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure_667c9281-418b-4d89-abc0-23eb47c831ae" 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_c72a18f9-bc5c-43ee-80ad-ce78c370d0cf" xlink:to="loc_us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure_667c9281-418b-4d89-abc0-23eb47c831ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_235c40bc-382a-4234-b78c-ffb2fbafdf1a" 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_c72a18f9-bc5c-43ee-80ad-ce78c370d0cf" xlink:to="loc_us-gaap_DebtInstrumentFairValue_235c40bc-382a-4234-b78c-ffb2fbafdf1a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LiabilitiescarriedonBalanceSheetatamountsotherthanfairvalue_ab1afdca-c405-4563-9629-2b65be2ae2d6" xlink:href="fnf-20200630.xsd#fnf_LiabilitiescarriedonBalanceSheetatamountsotherthanfairvalue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_c72a18f9-bc5c-43ee-80ad-ce78c370d0cf" xlink:to="loc_fnf_LiabilitiescarriedonBalanceSheetatamountsotherthanfairvalue_ab1afdca-c405-4563-9629-2b65be2ae2d6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_345b2802-b4f2-4d50-a9c6-f3a3fac56ac1" 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_44b76879-a99d-4763-b64c-d6f3f70f5af4" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_345b2802-b4f2-4d50-a9c6-f3a3fac56ac1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_16d163ab-c31f-487f-ae2e-998b73deeef3" 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_345b2802-b4f2-4d50-a9c6-f3a3fac56ac1" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_16d163ab-c31f-487f-ae2e-998b73deeef3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_16d163ab-c31f-487f-ae2e-998b73deeef3_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_16d163ab-c31f-487f-ae2e-998b73deeef3" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_16d163ab-c31f-487f-ae2e-998b73deeef3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6f5f099a-d8a6-4e47-b453-32b6ba61fade" 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_16d163ab-c31f-487f-ae2e-998b73deeef3" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6f5f099a-d8a6-4e47-b453-32b6ba61fade" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_4fd9192d-2579-4184-9fb4-3f9bd461860b" 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_6f5f099a-d8a6-4e47-b453-32b6ba61fade" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_4fd9192d-2579-4184-9fb4-3f9bd461860b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_48dbf12d-9cf9-4783-9f2f-75761281d411" 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_6f5f099a-d8a6-4e47-b453-32b6ba61fade" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_48dbf12d-9cf9-4783-9f2f-75761281d411" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_f875086b-e1c0-4183-a356-3e50896af3fa" 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_6f5f099a-d8a6-4e47-b453-32b6ba61fade" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_f875086b-e1c0-4183-a356-3e50896af3fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_397de108-f776-4364-9d25-de8504b1eba7" 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_345b2802-b4f2-4d50-a9c6-f3a3fac56ac1" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_397de108-f776-4364-9d25-de8504b1eba7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_397de108-f776-4364-9d25-de8504b1eba7_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_397de108-f776-4364-9d25-de8504b1eba7" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_397de108-f776-4364-9d25-de8504b1eba7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4d19f7d2-f4bc-4192-8b11-d0943ed18ada" 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_397de108-f776-4364-9d25-de8504b1eba7" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4d19f7d2-f4bc-4192-8b11-d0943ed18ada" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_677b1068-023b-450d-8ae5-7b1e409743ba" 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_4d19f7d2-f4bc-4192-8b11-d0943ed18ada" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_677b1068-023b-450d-8ae5-7b1e409743ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_f0fd7f6d-876d-4fcf-bb0d-e71ac16dc74b" 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_4d19f7d2-f4bc-4192-8b11-d0943ed18ada" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_f0fd7f6d-876d-4fcf-bb0d-e71ac16dc74b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_d6ccb51e-38b6-4919-8f6c-7b077851ee7f" 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_4d19f7d2-f4bc-4192-8b11-d0943ed18ada" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_d6ccb51e-38b6-4919-8f6c-7b077851ee7f" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FairValueofFinancialInstrumentsNAVDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#FairValueofFinancialInstrumentsNAVDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FairValueofFinancialInstrumentsNAVDetails" xlink:type="extended" id="idcda53e647874dc4969d2714ddda3203_FairValueofFinancialInstrumentsNAVDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLineItems_52210c5a-9094-464a-b72a-d5a37d3688f5" 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_AlternativeInvestment_29e3f9c9-606b-48a0-962a-09ed7d2f5122" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AlternativeInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLineItems_52210c5a-9094-464a-b72a-d5a37d3688f5" xlink:to="loc_us-gaap_AlternativeInvestment_29e3f9c9-606b-48a0-962a-09ed7d2f5122" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_649d1f7f-51bf-4967-89a6-03a385ff599c" 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_52210c5a-9094-464a-b72a-d5a37d3688f5" xlink:to="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_649d1f7f-51bf-4967-89a6-03a385ff599c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_347264d2-f2c1-4984-b81b-1b807e39bf57" 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_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_649d1f7f-51bf-4967-89a6-03a385ff599c" xlink:to="loc_us-gaap_InvestmentTypeAxis_347264d2-f2c1-4984-b81b-1b807e39bf57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_347264d2-f2c1-4984-b81b-1b807e39bf57_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_347264d2-f2c1-4984-b81b-1b807e39bf57" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_347264d2-f2c1-4984-b81b-1b807e39bf57_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_3f9a1f3c-1476-486b-8f5b-7db829b09587" 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_347264d2-f2c1-4984-b81b-1b807e39bf57" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_3f9a1f3c-1476-486b-8f5b-7db829b09587" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivateEquityFundsMember_fe5ebd5b-c884-42f0-8855-190341f2e65b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrivateEquityFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_3f9a1f3c-1476-486b-8f5b-7db829b09587" xlink:to="loc_us-gaap_PrivateEquityFundsMember_fe5ebd5b-c884-42f0-8855-190341f2e65b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Investments" xlink:type="simple" xlink:href="fnf-20200630.xsd#Investments"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Investments" xlink:type="extended" id="iadc9ca0d60f54e32b3ef59f472ab29a1_Investments"/>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsTables" xlink:type="extended" id="i49bb8430aca447848c6a8ea4b2bfb913_InvestmentsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsConsolidatedInvestmentsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsConsolidatedInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsConsolidatedInvestmentsDetails" xlink:type="extended" id="i5345e9a1282a40d68d2b49a88241bf25_InvestmentsConsolidatedInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_8bf0165f-ad2e-405c-8957-17f0a5b9fe26" 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_bd353277-ecc3-4c5e-97f7-b650f44f6d52" 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_8bf0165f-ad2e-405c-8957-17f0a5b9fe26" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_bd353277-ecc3-4c5e-97f7-b650f44f6d52" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_5d235194-eacd-4cf7-9cda-a1ef40a696a6" 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_bd353277-ecc3-4c5e-97f7-b650f44f6d52" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_5d235194-eacd-4cf7-9cda-a1ef40a696a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_e1c9ed3c-b166-47c9-8646-abcb253292c6" 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_bd353277-ecc3-4c5e-97f7-b650f44f6d52" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_e1c9ed3c-b166-47c9-8646-abcb253292c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_890c7454-a495-4bd7-b926-fcf6d4de95e8" 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_bd353277-ecc3-4c5e-97f7-b650f44f6d52" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_890c7454-a495-4bd7-b926-fcf6d4de95e8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_b9cc2745-cf14-44ed-acfd-0934fa541c63" 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_bd353277-ecc3-4c5e-97f7-b650f44f6d52" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_b9cc2745-cf14-44ed-acfd-0934fa541c63" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_308c37b8-66c1-49ac-930a-70ac9be60864" 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_bd353277-ecc3-4c5e-97f7-b650f44f6d52" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_308c37b8-66c1-49ac-930a-70ac9be60864" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_7b015874-97f1-4966-abd4-28316d99143f" 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_8bf0165f-ad2e-405c-8957-17f0a5b9fe26" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_7b015874-97f1-4966-abd4-28316d99143f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_43e01c9a-73d0-4bbe-b827-3241d171b2ff" 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_7b015874-97f1-4966-abd4-28316d99143f" xlink:to="loc_us-gaap_FinancialInstrumentAxis_43e01c9a-73d0-4bbe-b827-3241d171b2ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_43e01c9a-73d0-4bbe-b827-3241d171b2ff_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_43e01c9a-73d0-4bbe-b827-3241d171b2ff" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_43e01c9a-73d0-4bbe-b827-3241d171b2ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_840480c7-8879-445a-b8e3-a9b6d6b604a5" 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_43e01c9a-73d0-4bbe-b827-3241d171b2ff" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_37db7fb3-d43a-4912-9d79-245026e5dfb3" 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_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_37db7fb3-d43a-4912-9d79-245026e5dfb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_70e2ed09-ba8d-427c-8bc3-aae187355112" 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_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_70e2ed09-ba8d-427c-8bc3-aae187355112" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_3a5f0158-30ae-441c-93c0-e2e343382395" 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_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_3a5f0158-30ae-441c-93c0-e2e343382395" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_6311a034-fc81-4ce3-a965-00aa5fa92dd9" xlink:href="fnf-20200630.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_fnf_HybridsMember_6311a034-fc81-4ce3-a965-00aa5fa92dd9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MunicipalsMember_2394b0f1-d4c3-4119-b944-4ee101a30d75" xlink:href="fnf-20200630.xsd#fnf_MunicipalsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_fnf_MunicipalsMember_2394b0f1-d4c3-4119-b944-4ee101a30d75" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_8534fb6d-97d2-444e-95e4-6049753a346c" 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_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_8534fb6d-97d2-444e-95e4-6049753a346c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_43807fb8-aa46-4e5f-ada9-569e7a147cf0" 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_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_43807fb8-aa46-4e5f-ada9-569e7a147cf0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_79860734-a6be-4ef9-96e5-091056f8864f" 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_840480c7-8879-445a-b8e3-a9b6d6b604a5" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_79860734-a6be-4ef9-96e5-091056f8864f" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsNarrativeDetails" xlink:type="extended" id="i40c698accf8d4fdeae9591baa9b9e0fa_InvestmentsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_df117fc0-58d3-492f-9da1-fc4e75e063e4" 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_404902bd-5498-4c74-b47e-f214606c54cd" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_AssetsHeldByInsuranceRegulators_404902bd-5498-4c74-b47e-f214606c54cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestmentNonIncomeProducingFairValueDisclosure_2d67b1be-5e3a-4f52-9feb-f7aebd20bc11" xlink:href="fnf-20200630.xsd#fnf_InvestmentNonIncomeProducingFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_fnf_InvestmentNonIncomeProducingFairValueDisclosure_2d67b1be-5e3a-4f52-9feb-f7aebd20bc11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable_e6b05b0f-4fe3-45c1-889f-4537e0c46303" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_InterestReceivable_e6b05b0f-4fe3-45c1-889f-4537e0c46303" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1_52f27922-2ef2-4b22-81de-664a77fcde5f" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1_52f27922-2ef2-4b22-81de-664a77fcde5f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestments_b4a7d9e3-dab7-4028-b68d-9e2f6d6b3aad" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_OtherInvestments_b4a7d9e3-dab7-4028-b68d-9e2f6d6b3aad" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitment_dabc907e-c1eb-4e11-8aba-f1b5550cbd3a" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_OtherCommitment_dabc907e-c1eb-4e11-8aba-f1b5550cbd3a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedBalanceShares_9c6bc1e3-febd-40bb-b030-cff175701562" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_InvestmentOwnedBalanceShares_9c6bc1e3-febd-40bb-b030-cff175701562" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedAtFairValue_c9217b07-f191-41b9-bb71-2d0f7186c198" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_InvestmentOwnedAtFairValue_c9217b07-f191-41b9-bb71-2d0f7186c198" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageLoansPercentageOfInvestments_6df111b1-bd30-447f-9cd7-f4c6157aaaf2" xlink:href="fnf-20200630.xsd#fnf_CommercialMortgageLoansPercentageOfInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_fnf_CommercialMortgageLoansPercentageOfInvestments_6df111b1-bd30-447f-9cd7-f4c6157aaaf2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoantoValueMaximumThreshold_c9fb2a90-4d7d-438b-b243-d8a458550bfb" xlink:href="fnf-20200630.xsd#fnf_LoantoValueMaximumThreshold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_fnf_LoantoValueMaximumThreshold_c9fb2a90-4d7d-438b-b243-d8a458550bfb" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioAmortizationPeriod_c2cfd236-2e62-4df2-a33e-38324d0ff33b" xlink:href="fnf-20200630.xsd#fnf_DebtServiceCoverageRatioAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_fnf_DebtServiceCoverageRatioAmortizationPeriod_c2cfd236-2e62-4df2-a33e-38324d0ff33b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_36fe9f22-3dff-4828-909e-1b7a2c5e7190" xlink:href="fnf-20200630.xsd#fnf_ResidentialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_36fe9f22-3dff-4828-909e-1b7a2c5e7190" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageLoansLocationPercentage_3b4cb33c-cd8b-415b-8f0f-35a4963b3db9" xlink:href="fnf-20200630.xsd#fnf_ResidentialMortgageLoansLocationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_fnf_ResidentialMortgageLoansLocationPercentage_3b4cb33c-cd8b-415b-8f0f-35a4963b3db9" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f84f49d2-fb05-49b9-b440-ad00187aa4df" 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_df117fc0-58d3-492f-9da1-fc4e75e063e4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_976d343b-9ccb-4e4b-8e21-8b8e939a5d4e" 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_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_976d343b-9ccb-4e4b-8e21-8b8e939a5d4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_976d343b-9ccb-4e4b-8e21-8b8e939a5d4e_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_976d343b-9ccb-4e4b-8e21-8b8e939a5d4e" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_976d343b-9ccb-4e4b-8e21-8b8e939a5d4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_5562bdd7-66d2-4dc2-b72b-132c9603a57a" 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_976d343b-9ccb-4e4b-8e21-8b8e939a5d4e" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_5562bdd7-66d2-4dc2-b72b-132c9603a57a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesMember_97b7e430-7ef7-443d-b190-1c4f608a9d55" 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_5562bdd7-66d2-4dc2-b72b-132c9603a57a" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesMember_97b7e430-7ef7-443d-b190-1c4f608a9d55" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageLoanMember_5ffb9435-3720-4673-99dc-31df1dacfe7f" xlink:href="fnf-20200630.xsd#fnf_CommercialMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_5562bdd7-66d2-4dc2-b72b-132c9603a57a" xlink:to="loc_fnf_CommercialMortgageLoanMember_5ffb9435-3720-4673-99dc-31df1dacfe7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_d748ab7e-ff3e-4179-8721-4d1abae89b40" 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_5562bdd7-66d2-4dc2-b72b-132c9603a57a" xlink:to="loc_us-gaap_ResidentialMortgageMember_d748ab7e-ff3e-4179-8721-4d1abae89b40" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_ca765840-a06d-4e44-ad01-fec9ec2d7088" 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_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_srt_StatementGeographicalAxis_ca765840-a06d-4e44-ad01-fec9ec2d7088" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ca765840-a06d-4e44-ad01-fec9ec2d7088_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_ca765840-a06d-4e44-ad01-fec9ec2d7088" xlink:to="loc_srt_SegmentGeographicalDomain_ca765840-a06d-4e44-ad01-fec9ec2d7088_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ea7a7908-cd52-42e1-a080-053425743e5a" 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_ca765840-a06d-4e44-ad01-fec9ec2d7088" xlink:to="loc_srt_SegmentGeographicalDomain_ea7a7908-cd52-42e1-a080-053425743e5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_0f241d57-26cb-4869-ba50-bfaaa94f650d" 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_ea7a7908-cd52-42e1-a080-053425743e5a" xlink:to="loc_country_US_0f241d57-26cb-4869-ba50-bfaaa94f650d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesAxis_948ee8ff-49dd-419f-b267-628cca4e4fa2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesAxis_948ee8ff-49dd-419f-b267-628cca4e4fa2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain_948ee8ff-49dd-419f-b267-628cca4e4fa2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesAxis_948ee8ff-49dd-419f-b267-628cca4e4fa2" xlink:to="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain_948ee8ff-49dd-419f-b267-628cca4e4fa2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain_bc12e589-c4db-40ec-8664-03fe96135bc4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesAxis_948ee8ff-49dd-419f-b267-628cca4e4fa2" xlink:to="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain_bc12e589-c4db-40ec-8664-03fe96135bc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_0c13e327-aafe-4b7b-876d-2ad2ac3ad711" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain_bc12e589-c4db-40ec-8664-03fe96135bc4" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_0c13e327-aafe-4b7b-876d-2ad2ac3ad711" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_2ba84f93-e316-441d-a7ae-16e1b4d14d3b" 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_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_us-gaap_InvestmentTypeAxis_2ba84f93-e316-441d-a7ae-16e1b4d14d3b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_2ba84f93-e316-441d-a7ae-16e1b4d14d3b_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_2ba84f93-e316-441d-a7ae-16e1b4d14d3b" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_2ba84f93-e316-441d-a7ae-16e1b4d14d3b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_6f203f3d-a025-496f-9593-355c1a4618c8" 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_2ba84f93-e316-441d-a7ae-16e1b4d14d3b" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_6f203f3d-a025-496f-9593-355c1a4618c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BISACoInvestFundIILPMember_41060844-6fc8-4849-8506-9c392a284281" xlink:href="fnf-20200630.xsd#fnf_BISACoInvestFundIILPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_6f203f3d-a025-496f-9593-355c1a4618c8" xlink:to="loc_fnf_BISACoInvestFundIILPMember_41060844-6fc8-4849-8506-9c392a284281" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4bb64c87-f1f3-4c65-986c-ae64bc90d8ea" 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_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4bb64c87-f1f3-4c65-986c-ae64bc90d8ea" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_4bb64c87-f1f3-4c65-986c-ae64bc90d8ea_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_4bb64c87-f1f3-4c65-986c-ae64bc90d8ea" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_4bb64c87-f1f3-4c65-986c-ae64bc90d8ea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_422cec02-eb1f-4897-8812-ec461c313c53" 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_4bb64c87-f1f3-4c65-986c-ae64bc90d8ea" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_422cec02-eb1f-4897-8812-ec461c313c53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CrescentCapitalBDCInc.Member_bd39283f-4064-4a6d-bdcc-14f50dbd0440" xlink:href="fnf-20200630.xsd#fnf_CrescentCapitalBDCInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_422cec02-eb1f-4897-8812-ec461c313c53" xlink:to="loc_fnf_CrescentCapitalBDCInc.Member_bd39283f-4064-4a6d-bdcc-14f50dbd0440" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GolubCapitalPartners10L.P.Member_3b2c58cf-60f2-4c07-b0cc-9dfad9d645a8" xlink:href="fnf-20200630.xsd#fnf_GolubCapitalPartners10L.P.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_422cec02-eb1f-4897-8812-ec461c313c53" xlink:to="loc_fnf_GolubCapitalPartners10L.P.Member_3b2c58cf-60f2-4c07-b0cc-9dfad9d645a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_7fc5c5dd-6bfa-4db4-9d4b-b5e280abe9a3" 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_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_us-gaap_OtherCommitmentsAxis_7fc5c5dd-6bfa-4db4-9d4b-b5e280abe9a3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_7fc5c5dd-6bfa-4db4-9d4b-b5e280abe9a3_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_7fc5c5dd-6bfa-4db4-9d4b-b5e280abe9a3" xlink:to="loc_us-gaap_OtherCommitmentsDomain_7fc5c5dd-6bfa-4db4-9d4b-b5e280abe9a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_aaa63509-c769-4a45-876a-93162e3674f9" 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_7fc5c5dd-6bfa-4db4-9d4b-b5e280abe9a3" xlink:to="loc_us-gaap_OtherCommitmentsDomain_aaa63509-c769-4a45-876a-93162e3674f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommitmenttoInvestMember_7fec0f90-9d41-4054-b6c0-e99a6dc9cf4e" xlink:href="fnf-20200630.xsd#fnf_CommitmenttoInvestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_aaa63509-c769-4a45-876a-93162e3674f9" xlink:to="loc_fnf_CommitmenttoInvestMember_7fec0f90-9d41-4054-b6c0-e99a6dc9cf4e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_373f7a7f-cad0-4791-bd92-c0aee2426254" 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_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_373f7a7f-cad0-4791-bd92-c0aee2426254" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_373f7a7f-cad0-4791-bd92-c0aee2426254_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_373f7a7f-cad0-4791-bd92-c0aee2426254" xlink:to="loc_us-gaap_RelatedPartyDomain_373f7a7f-cad0-4791-bd92-c0aee2426254_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_6b494f78-1bcf-49ce-8363-db2007655614" 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_373f7a7f-cad0-4791-bd92-c0aee2426254" xlink:to="loc_us-gaap_RelatedPartyDomain_6b494f78-1bcf-49ce-8363-db2007655614" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CannaeHoldingsInc.Member_f7b42850-b149-462f-b4ac-0756a26ca9cb" xlink:href="fnf-20200630.xsd#fnf_CannaeHoldingsInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_6b494f78-1bcf-49ce-8363-db2007655614" xlink:to="loc_fnf_CannaeHoldingsInc.Member_f7b42850-b149-462f-b4ac-0756a26ca9cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_1230aa71-2d04-4ffd-ab9e-d6f556ed8ad3" 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_f84f49d2-fb05-49b9-b440-ad00187aa4df" xlink:to="loc_us-gaap_StatementClassOfStockAxis_1230aa71-2d04-4ffd-ab9e-d6f556ed8ad3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_1230aa71-2d04-4ffd-ab9e-d6f556ed8ad3_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_1230aa71-2d04-4ffd-ab9e-d6f556ed8ad3" xlink:to="loc_us-gaap_ClassOfStockDomain_1230aa71-2d04-4ffd-ab9e-d6f556ed8ad3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_762c3a95-623b-484d-bd1b-234806f63322" 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_1230aa71-2d04-4ffd-ab9e-d6f556ed8ad3" xlink:to="loc_us-gaap_ClassOfStockDomain_762c3a95-623b-484d-bd1b-234806f63322" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_371c44d9-ded5-4d96-94d9-a98d8c00a3f7" 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_762c3a95-623b-484d-bd1b-234806f63322" xlink:to="loc_us-gaap_CommonStockMember_371c44d9-ded5-4d96-94d9-a98d8c00a3f7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails" xlink:type="extended" id="ie112dabd386a4e1e849925e4945fb03b_InvestmentsAmortizedCostandFairValueofFixedMaturityAvailableforSaleSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_626907a2-bfa5-47c9-9b47-8241b588475c" 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_92ce73b7-a0b1-41f5-91e4-e2eee5adf66e" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_92ce73b7-a0b1-41f5-91e4-e2eee5adf66e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_1daf80c4-fcc0-4b58-b802-7ea63f34f930" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_1daf80c4-fcc0-4b58-b802-7ea63f34f930" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_08f6e2d0-30df-4afd-9585-41fb3842bbb8" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_08f6e2d0-30df-4afd-9585-41fb3842bbb8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_f7e2c5b3-d326-4e72-b4c8-433f52930f56" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_f7e2c5b3-d326-4e72-b4c8-433f52930f56" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostExcludingSingleMaturityDate_c6de4538-797d-47a3-ad51-adb0cba024b7" xlink:href="fnf-20200630.xsd#fnf_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostExcludingSingleMaturityDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostExcludingSingleMaturityDate_c6de4538-797d-47a3-ad51-adb0cba024b7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_741e4405-ee60-4d4a-9b6b-a9aef3e1572d" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_741e4405-ee60-4d4a-9b6b-a9aef3e1572d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_78762df8-81f2-4813-ace7-fca57154d88a" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_78762df8-81f2-4813-ace7-fca57154d88a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_76dc067f-1f0c-4e26-8a78-0d17b67e126d" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_76dc067f-1f0c-4e26-8a78-0d17b67e126d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_f8985f98-8f10-4082-a27c-d0e7a42e5940" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_f8985f98-8f10-4082-a27c-d0e7a42e5940" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_d85413a3-7098-4177-ac5e-a4398f45a3f0" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_d85413a3-7098-4177-ac5e-a4398f45a3f0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_5aadf0a5-042e-4d32-b0fd-542e4cd771a9" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_5aadf0a5-042e-4d32-b0fd-542e4cd771a9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingSingleMaturityDate_78bfbdc5-0d42-4236-bd74-9fa97cb17815" xlink:href="fnf-20200630.xsd#fnf_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingSingleMaturityDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_fnf_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingSingleMaturityDate_78bfbdc5-0d42-4236-bd74-9fa97cb17815" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_61fa3c92-fcc4-48ef-91f6-54d4aefa7791" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_61fa3c92-fcc4-48ef-91f6-54d4aefa7791" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AvailableForSaleSecuritiesFairValueOnDebtMaturities_29f184eb-ea66-4f8a-b6f1-67ac2c4c3451" xlink:href="fnf-20200630.xsd#fnf_AvailableForSaleSecuritiesFairValueOnDebtMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_fnf_AvailableForSaleSecuritiesFairValueOnDebtMaturities_29f184eb-ea66-4f8a-b6f1-67ac2c4c3451" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_803685b6-5a46-4bed-92e7-6d79d0a12fbc" 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_626907a2-bfa5-47c9-9b47-8241b588475c" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_803685b6-5a46-4bed-92e7-6d79d0a12fbc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_b9801e24-5278-400e-8544-1f3673ac3fbd" 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_803685b6-5a46-4bed-92e7-6d79d0a12fbc" xlink:to="loc_us-gaap_FinancialInstrumentAxis_b9801e24-5278-400e-8544-1f3673ac3fbd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b9801e24-5278-400e-8544-1f3673ac3fbd_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_b9801e24-5278-400e-8544-1f3673ac3fbd" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b9801e24-5278-400e-8544-1f3673ac3fbd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_14958eb1-0dbc-4dfb-8f3a-94881e1be019" 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_b9801e24-5278-400e-8544-1f3673ac3fbd" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_14958eb1-0dbc-4dfb-8f3a-94881e1be019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_edea3c14-3e76-4211-a1bd-65735cec9e75" 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_14958eb1-0dbc-4dfb-8f3a-94881e1be019" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_edea3c14-3e76-4211-a1bd-65735cec9e75" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_0faeb61d-006d-4019-83b0-01d554155175" 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_14958eb1-0dbc-4dfb-8f3a-94881e1be019" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_0faeb61d-006d-4019-83b0-01d554155175" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StructuredHybridsMember_2fa5a530-7703-4888-a9b0-c50d3c515869" xlink:href="fnf-20200630.xsd#fnf_StructuredHybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_14958eb1-0dbc-4dfb-8f3a-94881e1be019" xlink:to="loc_fnf_StructuredHybridsMember_2fa5a530-7703-4888-a9b0-c50d3c515869" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_31313acd-c83a-4211-b474-ef83242c0c2a" 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_14958eb1-0dbc-4dfb-8f3a-94881e1be019" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_31313acd-c83a-4211-b474-ef83242c0c2a" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails" xlink:type="extended" id="i22b37d0d9b1740ed93ee1a08c6db534f_InvestmentsAllowanceforCreditLossAggregatedByInvestmentCategoryDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableforsaleAllowanceForCreditLossLineItems_5cd41faf-8840-4e62-8934-bf8b42730801" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" 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_5cd41faf-8840-4e62-8934-bf8b42730801" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_8810985d-a122-449f-9876-35cca0f41693" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_8810985d-a122-449f-9876-35cca0f41693" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded_05e11f3f-ea26-4be8-8735-de0a6a9530d8" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded_05e11f3f-ea26-4be8-8735-de0a6a9530d8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease_dec36463-a03b-415f-b478-35b4d0544798" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease_dec36463-a03b-415f-b478-35b4d0544798" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal_081271e3-90b8-44f9-a605-166b559c2d01" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal_081271e3-90b8-44f9-a605-166b559c2d01" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold_ed3b6a26-afce-4279-b293-a619daff92b4" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold_ed3b6a26-afce-4279-b293-a619daff92b4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSellBeforeRecovery_a0fb50fb-b3a9-47d3-90ac-7a102b4c6704" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSellBeforeRecovery_a0fb50fb-b3a9-47d3-90ac-7a102b4c6704" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff_77c40ec5-da3d-44dd-be18-09d26bbaa934" 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_93db66ec-5808-41a6-acb0-c81c015aaba4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff_77c40ec5-da3d-44dd-be18-09d26bbaa934" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss_e8b243f8-e8da-442e-8a5d-46c06ab1f9f9" 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_c06debb8-dc6f-48ec-be28-b9e462f85eb8" 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_5cd41faf-8840-4e62-8934-bf8b42730801" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable_c06debb8-dc6f-48ec-be28-b9e462f85eb8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_0be54fc7-584f-48f7-8089-a65322486d89" 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_c06debb8-dc6f-48ec-be28-b9e462f85eb8" xlink:to="loc_us-gaap_FinancialInstrumentAxis_0be54fc7-584f-48f7-8089-a65322486d89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0be54fc7-584f-48f7-8089-a65322486d89_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_0be54fc7-584f-48f7-8089-a65322486d89" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_0be54fc7-584f-48f7-8089-a65322486d89_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ad2c2335-d250-47df-92d6-e503cca095e5" 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_0be54fc7-584f-48f7-8089-a65322486d89" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ad2c2335-d250-47df-92d6-e503cca095e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_199960e5-4cff-4fe2-a3cb-d392c9c3f7d7" 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_ad2c2335-d250-47df-92d6-e503cca095e5" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_199960e5-4cff-4fe2-a3cb-d392c9c3f7d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_6aca3d23-e670-4c37-8ab3-ef5cbad4786d" 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_ad2c2335-d250-47df-92d6-e503cca095e5" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_6aca3d23-e670-4c37-8ab3-ef5cbad4786d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_684be2e3-63b1-4625-bb36-1bde4df6cb46" xlink:href="fnf-20200630.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ad2c2335-d250-47df-92d6-e503cca095e5" xlink:to="loc_fnf_HybridsMember_684be2e3-63b1-4625-bb36-1bde4df6cb46" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_9f6a8db3-83bc-469c-b0a3-fe7b163627e1" 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_ad2c2335-d250-47df-92d6-e503cca095e5" xlink:to="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_9f6a8db3-83bc-469c-b0a3-fe7b163627e1" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsAllowanceforCreditLossesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsAllowanceforCreditLossesDetails" xlink:type="extended" id="i646a88bf34c84f4c92eadffa4b9899cb_InvestmentsAllowanceforCreditLossesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_d9de1ef6-8cee-4b09-9587-9e8894aca984" 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_68f36da4-ef5f-4164-b974-c9f71d514001" 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_d9de1ef6-8cee-4b09-9587-9e8894aca984" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward_68f36da4-ef5f-4164-b974-c9f71d514001" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_27c4361b-6ec6-46e8-830a-0cb8a74f6881" 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_68f36da4-ef5f-4164-b974-c9f71d514001" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_27c4361b-6ec6-46e8-830a-0cb8a74f6881" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed_fed2415f-6066-4d59-baf5-fa33aa535e42" 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_68f36da4-ef5f-4164-b974-c9f71d514001" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed_fed2415f-6066-4d59-baf5-fa33aa535e42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForOtherCreditLosses_1ddac178-9365-41ae-8b31-b6221580059b" 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_68f36da4-ef5f-4164-b974-c9f71d514001" xlink:to="loc_us-gaap_ProvisionForOtherCreditLosses_1ddac178-9365-41ae-8b31-b6221580059b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_82bc5052-b992-47cf-a3c6-354f98fe2825" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract_82666a78-cd69-44f4-ab46-23e5cdfb9cc0" 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_d9de1ef6-8cee-4b09-9587-9e8894aca984" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract_82666a78-cd69-44f4-ab46-23e5cdfb9cc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_cba781d1-89be-4c5e-9f44-6524289d2289" 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_82666a78-cd69-44f4-ab46-23e5cdfb9cc0" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_cba781d1-89be-4c5e-9f44-6524289d2289" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableforsalePurchasedWithCreditDeteriorationAmountAtPurchasePriceAbstract_7ab07283-de94-4fa7-ba8b-bb95237de70d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableforsalePurchasedWithCreditDeteriorationAmountAtPurchasePriceAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_d9de1ef6-8cee-4b09-9587-9e8894aca984" xlink:to="loc_us-gaap_DebtSecuritiesAvailableforsalePurchasedWithCreditDeteriorationAmountAtPurchasePriceAbstract_7ab07283-de94-4fa7-ba8b-bb95237de70d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice_c4db3f43-1496-4294-b332-6b71b3d0035c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableforsalePurchasedWithCreditDeteriorationAmountAtPurchasePriceAbstract_7ab07283-de94-4fa7-ba8b-bb95237de70d" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice_c4db3f43-1496-4294-b332-6b71b3d0035c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate_38ad565f-97d8-4ad1-adc3-3b8972149002" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableforsalePurchasedWithCreditDeteriorationAmountAtPurchasePriceAbstract_7ab07283-de94-4fa7-ba8b-bb95237de70d" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate_38ad565f-97d8-4ad1-adc3-3b8972149002" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationDiscountPremium_7706237a-55b1-495c-8df5-bdefd72df886" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationDiscountPremium"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableforsalePurchasedWithCreditDeteriorationAmountAtPurchasePriceAbstract_7ab07283-de94-4fa7-ba8b-bb95237de70d" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationDiscountPremium_7706237a-55b1-495c-8df5-bdefd72df886" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtParValue_62c0c2a5-c0d6-4f3d-a829-4de193133c90" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtParValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesAvailableforsalePurchasedWithCreditDeteriorationAmountAtPurchasePriceAbstract_7ab07283-de94-4fa7-ba8b-bb95237de70d" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtParValue_62c0c2a5-c0d6-4f3d-a829-4de193133c90" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_24c198fa-365b-4c7c-b409-e6aedb9e866b" 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_d9de1ef6-8cee-4b09-9587-9e8894aca984" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_24c198fa-365b-4c7c-b409-e6aedb9e866b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_6e7f7b3e-783e-4078-b4f6-4cadfac327d9" 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_24c198fa-365b-4c7c-b409-e6aedb9e866b" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_6e7f7b3e-783e-4078-b4f6-4cadfac327d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_6e7f7b3e-783e-4078-b4f6-4cadfac327d9_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_6e7f7b3e-783e-4078-b4f6-4cadfac327d9" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_6e7f7b3e-783e-4078-b4f6-4cadfac327d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_32197494-ea05-41b5-ba1f-99bf8afc123d" 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_6e7f7b3e-783e-4078-b4f6-4cadfac327d9" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_32197494-ea05-41b5-ba1f-99bf8afc123d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_2efa3fc3-0f41-4f5e-93dd-d459eae2597f" 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_32197494-ea05-41b5-ba1f-99bf8afc123d" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_2efa3fc3-0f41-4f5e-93dd-d459eae2597f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_f3d16c40-e9fd-4005-baac-3bba7d39449b" 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_32197494-ea05-41b5-ba1f-99bf8afc123d" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_f3d16c40-e9fd-4005-baac-3bba7d39449b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails" xlink:type="extended" id="i0008d79eda6543c4891c22489f2ee4b3_InvestmentsFairValueandGrossUnrealizedLossesofAvailableforSaleSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract_42a065ea-6559-4afe-ae0d-49318ad734cf" 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_15fdf641-aba7-4fa0-ac5a-d3ff1a209326" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_15fdf641-aba7-4fa0-ac5a-d3ff1a209326" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_db6b4efa-ab8b-4dc9-8f6e-6638c0f1b459" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_db6b4efa-ab8b-4dc9-8f6e-6638c0f1b459" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_6fb5555b-6035-4771-ae18-60f2e3872e56" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_6fb5555b-6035-4771-ae18-60f2e3872e56" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_6b6328bc-9e11-477e-885e-1e1b73e2c315" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_6b6328bc-9e11-477e-885e-1e1b73e2c315" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_287a2d2a-4e04-4d6f-8380-6b4abeb08ee3" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_287a2d2a-4e04-4d6f-8380-6b4abeb08ee3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_d9eb3227-af62-4647-96ca-e7cc53c5b431" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_d9eb3227-af62-4647-96ca-e7cc53c5b431" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_2cbc2bc5-7fb8-4658-a4a4-09e1efa5c134" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions_2cbc2bc5-7fb8-4658-a4a4-09e1efa5c134" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_25144e84-1eb1-4555-bc49-c52ec17e44ce" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_25144e84-1eb1-4555-bc49-c52ec17e44ce" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_e15ed793-39e0-440a-ae94-c0f7154d8888" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_e15ed793-39e0-440a-ae94-c0f7154d8888" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_0aea2d71-1166-48f6-ab63-4c5c1af05bcb" 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_42a065ea-6559-4afe-ae0d-49318ad734cf" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_0aea2d71-1166-48f6-ab63-4c5c1af05bcb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_288e7c60-7d7f-49d3-b24a-d1032999b45a" 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_0aea2d71-1166-48f6-ab63-4c5c1af05bcb" xlink:to="loc_us-gaap_FinancialInstrumentAxis_288e7c60-7d7f-49d3-b24a-d1032999b45a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_288e7c60-7d7f-49d3-b24a-d1032999b45a_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_288e7c60-7d7f-49d3-b24a-d1032999b45a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_288e7c60-7d7f-49d3-b24a-d1032999b45a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_66dafb26-3543-42aa-806f-707ec01c39d6" 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_288e7c60-7d7f-49d3-b24a-d1032999b45a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_a8fc39df-f288-4abf-b2d5-634a4b8437ea" 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_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_a8fc39df-f288-4abf-b2d5-634a4b8437ea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_609252de-2046-4469-ac68-17fca70e4c4d" 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_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_us-gaap_CommercialMortgageBackedSecuritiesMember_609252de-2046-4469-ac68-17fca70e4c4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_885af2b1-3051-404f-b1df-dd736f1d18ab" 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_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_885af2b1-3051-404f-b1df-dd736f1d18ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_HybridsMember_e41c5edd-7fc7-41ef-8d54-b36becf7aefe" xlink:href="fnf-20200630.xsd#fnf_HybridsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_fnf_HybridsMember_e41c5edd-7fc7-41ef-8d54-b36becf7aefe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_5bf6ea71-8b06-4c9b-9f3c-5080a108b05e" 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_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_5bf6ea71-8b06-4c9b-9f3c-5080a108b05e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_68eada72-ff55-48bb-9a28-5b99b1826bd3" 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_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_68eada72-ff55-48bb-9a28-5b99b1826bd3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_51607d09-b15a-4cdf-860a-8d63f98b3759" 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_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_51607d09-b15a-4cdf-860a-8d63f98b3759" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c15b5a6e-3217-4a6d-897c-0d50e5834c95" 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_66dafb26-3543-42aa-806f-707ec01c39d6" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_c15b5a6e-3217-4a6d-897c-0d50e5834c95" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsScheduleofCommercialMortgageLoanInvestmentDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsScheduleofCommercialMortgageLoanInvestmentDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsScheduleofCommercialMortgageLoanInvestmentDetails" xlink:type="extended" id="ia22b57aa04a64b749b1c3b581ab5c27d_InvestmentsScheduleofCommercialMortgageLoanInvestmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_46ee4c95-8055-4756-b956-d1bd381e76de" 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_775d5668-6404-4426-985b-943eea2dbe2e" 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_46ee4c95-8055-4756-b956-d1bd381e76de" xlink:to="loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_775d5668-6404-4426-985b-943eea2dbe2e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance_aa02d5e4-c2b7-429b-b754-072cd6bd4e9f" 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_46ee4c95-8055-4756-b956-d1bd381e76de" xlink:to="loc_us-gaap_LoansAndLeasesReceivableAllowance_aa02d5e4-c2b7-429b-b754-072cd6bd4e9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount_000d0a36-f5a6-45c5-aa8f-c80c4afdfdca" 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_46ee4c95-8055-4756-b956-d1bd381e76de" xlink:to="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount_000d0a36-f5a6-45c5-aa8f-c80c4afdfdca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageReceivablePercentageofTotal_5e091495-0a5e-4495-8d9a-5ab43409a911" xlink:href="fnf-20200630.xsd#fnf_CommercialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_46ee4c95-8055-4756-b956-d1bd381e76de" xlink:to="loc_fnf_CommercialMortgageReceivablePercentageofTotal_5e091495-0a5e-4495-8d9a-5ab43409a911" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_dd8c5eb8-0acf-4950-a84b-bd6e560eafb4" 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_46ee4c95-8055-4756-b956-d1bd381e76de" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_dd8c5eb8-0acf-4950-a84b-bd6e560eafb4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_eebc626e-54e2-4f82-9ba1-e3790c4a100f" 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_dd8c5eb8-0acf-4950-a84b-bd6e560eafb4" xlink:to="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_eebc626e-54e2-4f82-9ba1-e3790c4a100f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_eebc626e-54e2-4f82-9ba1-e3790c4a100f_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_eebc626e-54e2-4f82-9ba1-e3790c4a100f" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_eebc626e-54e2-4f82-9ba1-e3790c4a100f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_3152c6cb-549d-4c2b-b83b-997811687df6" 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_eebc626e-54e2-4f82-9ba1-e3790c4a100f" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_HotelMember_157e7fd4-2669-4308-8eb9-40e154a549ba" 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_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:to="loc_srt_HotelMember_157e7fd4-2669-4308-8eb9-40e154a549ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IndustrialGeneralMember_35d4a820-69b1-472d-ad8b-5502830e4960" xlink:href="fnf-20200630.xsd#fnf_IndustrialGeneralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:to="loc_fnf_IndustrialGeneralMember_35d4a820-69b1-472d-ad8b-5502830e4960" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WarehouseMember_66f96a24-5598-430e-8330-9df240869ae4" 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_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:to="loc_srt_WarehouseMember_66f96a24-5598-430e-8330-9df240869ae4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MultifamilyMember_935cd938-bca9-4016-9ad1-d1408308040a" 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_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:to="loc_srt_MultifamilyMember_935cd938-bca9-4016-9ad1-d1408308040a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OfficeBuildingMember_4857a869-a88a-4407-8435-dbe61894ab40" 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_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:to="loc_srt_OfficeBuildingMember_4857a869-a88a-4407-8435-dbe61894ab40" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RetailSiteMember_0fc6e18c-5e75-4fcc-a36d-9414141f85d8" 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_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:to="loc_srt_RetailSiteMember_0fc6e18c-5e75-4fcc-a36d-9414141f85d8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OtherPropertyMember_41a5b934-e341-47ce-b777-f10d9ca535d4" 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_3152c6cb-549d-4c2b-b83b-997811687df6" xlink:to="loc_srt_OtherPropertyMember_41a5b934-e341-47ce-b777-f10d9ca535d4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_329bfb26-85aa-44bb-a88f-99ab50ee782e" 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_dd8c5eb8-0acf-4950-a84b-bd6e560eafb4" xlink:to="loc_srt_StatementGeographicalAxis_329bfb26-85aa-44bb-a88f-99ab50ee782e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_329bfb26-85aa-44bb-a88f-99ab50ee782e_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_329bfb26-85aa-44bb-a88f-99ab50ee782e" xlink:to="loc_srt_SegmentGeographicalDomain_329bfb26-85aa-44bb-a88f-99ab50ee782e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" 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_329bfb26-85aa-44bb-a88f-99ab50ee782e" xlink:to="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EastNorthCentralUSMember_4c62cccd-657b-4af2-be17-8b16ede106b9" xlink:href="fnf-20200630.xsd#fnf_EastNorthCentralUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_EastNorthCentralUSMember_4c62cccd-657b-4af2-be17-8b16ede106b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EastSouthCentralMember_8acde02d-2d0f-484e-bb91-d51672ae9d3e" xlink:href="fnf-20200630.xsd#fnf_EastSouthCentralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_EastSouthCentralMember_8acde02d-2d0f-484e-bb91-d51672ae9d3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MiddleAtlanticUSMember_6e33ec2e-8a5a-48a8-ba76-e6bc75d2583d" xlink:href="fnf-20200630.xsd#fnf_MiddleAtlanticUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_MiddleAtlanticUSMember_6e33ec2e-8a5a-48a8-ba76-e6bc75d2583d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MountainMember_49f9fe95-34ed-48e6-9c13-0a591462f591" xlink:href="fnf-20200630.xsd#fnf_MountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_MountainMember_49f9fe95-34ed-48e6-9c13-0a591462f591" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NewEnglandMember_17febb10-fa91-4ca7-983f-b9d1f879e2a5" xlink:href="fnf-20200630.xsd#fnf_NewEnglandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_NewEnglandMember_17febb10-fa91-4ca7-983f-b9d1f879e2a5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PacificUSMember_5045c68c-7156-4a71-96ac-6420dd3c3315" xlink:href="fnf-20200630.xsd#fnf_PacificUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_PacificUSMember_5045c68c-7156-4a71-96ac-6420dd3c3315" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_SouthAtlanticUSMember_ecc908b5-f257-472c-8a07-63f10349529e" xlink:href="fnf-20200630.xsd#fnf_SouthAtlanticUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_SouthAtlanticUSMember_ecc908b5-f257-472c-8a07-63f10349529e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WestNorthCentralUSMember_0782ec92-a86c-48d7-b0c0-582c915679e8" xlink:href="fnf-20200630.xsd#fnf_WestNorthCentralUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_WestNorthCentralUSMember_0782ec92-a86c-48d7-b0c0-582c915679e8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WestSouthCentralUSMember_82e05959-0dd0-4cc1-a9db-b72943cbfbb4" xlink:href="fnf-20200630.xsd#fnf_WestSouthCentralUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_21b14c64-d0e8-451a-b82a-8d4e6a81d37c" xlink:to="loc_fnf_WestSouthCentralUSMember_82e05959-0dd0-4cc1-a9db-b72943cbfbb4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_5b5b665f-bd15-4ce2-8188-bad6be26498c" 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_dd8c5eb8-0acf-4950-a84b-bd6e560eafb4" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_5b5b665f-bd15-4ce2-8188-bad6be26498c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_5b5b665f-bd15-4ce2-8188-bad6be26498c_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_5b5b665f-bd15-4ce2-8188-bad6be26498c" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_5b5b665f-bd15-4ce2-8188-bad6be26498c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_fa8f9cac-22f2-4c9b-be8d-770ca6f74ec9" 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_5b5b665f-bd15-4ce2-8188-bad6be26498c" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_fa8f9cac-22f2-4c9b-be8d-770ca6f74ec9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_71754a84-99d0-4c83-9a81-c463e92a511e" 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_fa8f9cac-22f2-4c9b-be8d-770ca6f74ec9" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_71754a84-99d0-4c83-9a81-c463e92a511e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails" xlink:type="extended" id="i7b51ce0319004e9f9f006daa7f78c173_InvestmentsRecordedInvestmentinCMLsbyLTVandDSCRatioCategoriesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a39901af-f1d5-497b-95cb-d75d4ec577f2" 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_0d7090f1-e0c4-4d53-8bf3-f333d365e5ba" xlink:href="fnf-20200630.xsd#fnf_LoansReceivableGrossMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a39901af-f1d5-497b-95cb-d75d4ec577f2" xlink:to="loc_fnf_LoansReceivableGrossMortgageLoans_0d7090f1-e0c4-4d53-8bf3-f333d365e5ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageReceivablePercentageofTotal_f437a82e-8bf7-4c20-b179-7b5c3185fc47" xlink:href="fnf-20200630.xsd#fnf_CommercialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_a39901af-f1d5-497b-95cb-d75d4ec577f2" xlink:to="loc_fnf_CommercialMortgageReceivablePercentageofTotal_f437a82e-8bf7-4c20-b179-7b5c3185fc47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_5c592c7b-1d97-47dc-8985-79c9f4fce41d" 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_a39901af-f1d5-497b-95cb-d75d4ec577f2" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_5c592c7b-1d97-47dc-8985-79c9f4fce41d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueAxis_c644cd4b-5642-4dae-8df3-0d42e2cbb043" 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_5c592c7b-1d97-47dc-8985-79c9f4fce41d" xlink:to="loc_us-gaap_LoanToValueAxis_c644cd4b-5642-4dae-8df3-0d42e2cbb043" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_c644cd4b-5642-4dae-8df3-0d42e2cbb043_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_c644cd4b-5642-4dae-8df3-0d42e2cbb043" xlink:to="loc_us-gaap_LoanToValueDomain_c644cd4b-5642-4dae-8df3-0d42e2cbb043_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_7cec1889-8786-4ed6-85dd-e1302cfdeafb" 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_c644cd4b-5642-4dae-8df3-0d42e2cbb043" xlink:to="loc_us-gaap_LoanToValueDomain_7cec1889-8786-4ed6-85dd-e1302cfdeafb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTVLessThan50PercentMember_63e4ade1-9105-4f8a-a4f8-bd68812c339a" xlink:href="fnf-20200630.xsd#fnf_LTVLessThan50PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_7cec1889-8786-4ed6-85dd-e1302cfdeafb" xlink:to="loc_fnf_LTVLessThan50PercentMember_63e4ade1-9105-4f8a-a4f8-bd68812c339a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV50to60PercentMember_ce20eeda-df50-4d12-88c0-e6a0b7156cca" xlink:href="fnf-20200630.xsd#fnf_LTV50to60PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_7cec1889-8786-4ed6-85dd-e1302cfdeafb" xlink:to="loc_fnf_LTV50to60PercentMember_ce20eeda-df50-4d12-88c0-e6a0b7156cca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV60to75PercentMember_69c57c10-699c-47df-8622-2ffef5136dbc" xlink:href="fnf-20200630.xsd#fnf_LTV60to75PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_7cec1889-8786-4ed6-85dd-e1302cfdeafb" xlink:to="loc_fnf_LTV60to75PercentMember_69c57c10-699c-47df-8622-2ffef5136dbc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtCovenantTermsAxis_871753a9-42ba-432d-a7d6-e576e501465a" xlink:href="fnf-20200630.xsd#fnf_DebtCovenantTermsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_5c592c7b-1d97-47dc-8985-79c9f4fce41d" xlink:to="loc_fnf_DebtCovenantTermsAxis_871753a9-42ba-432d-a7d6-e576e501465a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtCovenantTermsDomain_871753a9-42ba-432d-a7d6-e576e501465a_default" xlink:href="fnf-20200630.xsd#fnf_DebtCovenantTermsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_fnf_DebtCovenantTermsAxis_871753a9-42ba-432d-a7d6-e576e501465a" xlink:to="loc_fnf_DebtCovenantTermsDomain_871753a9-42ba-432d-a7d6-e576e501465a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtCovenantTermsDomain_7087f663-954d-4c5a-83d7-62297aea0da9" xlink:href="fnf-20200630.xsd#fnf_DebtCovenantTermsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_fnf_DebtCovenantTermsAxis_871753a9-42ba-432d-a7d6-e576e501465a" xlink:to="loc_fnf_DebtCovenantTermsDomain_7087f663-954d-4c5a-83d7-62297aea0da9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOnePointTwoFiveMember_0d511435-b4d7-4ef2-9645-877001d59196" xlink:href="fnf-20200630.xsd#fnf_GreaterThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtCovenantTermsDomain_7087f663-954d-4c5a-83d7-62297aea0da9" xlink:to="loc_fnf_GreaterThanOnePointTwoFiveMember_0d511435-b4d7-4ef2-9645-877001d59196" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_b815a53d-718f-425d-a7db-caae073150c5" xlink:href="fnf-20200630.xsd#fnf_GreaterThanOneButLessThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtCovenantTermsDomain_7087f663-954d-4c5a-83d7-62297aea0da9" xlink:to="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_b815a53d-718f-425d-a7db-caae073150c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_acf89c93-1282-45cd-b32f-0970495e86e3" 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_5c592c7b-1d97-47dc-8985-79c9f4fce41d" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_acf89c93-1282-45cd-b32f-0970495e86e3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_acf89c93-1282-45cd-b32f-0970495e86e3_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_acf89c93-1282-45cd-b32f-0970495e86e3" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_acf89c93-1282-45cd-b32f-0970495e86e3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_607609cb-00d9-4c5f-a901-f7b3cd8d64a1" 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_acf89c93-1282-45cd-b32f-0970495e86e3" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_607609cb-00d9-4c5f-a901-f7b3cd8d64a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_b6b82118-e75e-4bb8-80be-0e902a64b562" 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_607609cb-00d9-4c5f-a901-f7b3cd8d64a1" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_b6b82118-e75e-4bb8-80be-0e902a64b562" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_f929aa36-6336-4e41-88f1-931af0dc8601" 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_607609cb-00d9-4c5f-a901-f7b3cd8d64a1" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_f929aa36-6336-4e41-88f1-931af0dc8601" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_88256212-b4d1-4fdf-9b19-2c5d665136f1" 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_5c592c7b-1d97-47dc-8985-79c9f4fce41d" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_88256212-b4d1-4fdf-9b19-2c5d665136f1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_88256212-b4d1-4fdf-9b19-2c5d665136f1_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_88256212-b4d1-4fdf-9b19-2c5d665136f1" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_88256212-b4d1-4fdf-9b19-2c5d665136f1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_456ed873-7b31-44b7-a48f-a69a090db2dc" 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_88256212-b4d1-4fdf-9b19-2c5d665136f1" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_456ed873-7b31-44b7-a48f-a69a090db2dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_d0b4a578-d99a-4a4a-b798-1793294df446" 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_456ed873-7b31-44b7-a48f-a69a090db2dc" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_d0b4a578-d99a-4a4a-b798-1793294df446" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsScheduleofResidentialMortgageLoanInvestmentDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsScheduleofResidentialMortgageLoanInvestmentDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsScheduleofResidentialMortgageLoanInvestmentDetails" xlink:type="extended" id="iad01d16e8e11432980c2059ad6a5aa3d_InvestmentsScheduleofResidentialMortgageLoanInvestmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_3c6ab9b4-bba2-4c0b-ace1-c5cd86fa5cb0" 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_a8197bd3-d703-41c6-8e73-d845e602a440" xlink:href="fnf-20200630.xsd#fnf_LoansReceivableGrossMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_3c6ab9b4-bba2-4c0b-ace1-c5cd86fa5cb0" xlink:to="loc_fnf_LoansReceivableGrossMortgageLoans_a8197bd3-d703-41c6-8e73-d845e602a440" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_7fbc55f9-7d53-4b4d-a0cc-f47ba47aa232" xlink:href="fnf-20200630.xsd#fnf_ResidentialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_3c6ab9b4-bba2-4c0b-ace1-c5cd86fa5cb0" xlink:to="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_7fbc55f9-7d53-4b4d-a0cc-f47ba47aa232" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_66c9fdcf-70fd-416f-ae5f-d48ac37cdcb3" 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_3c6ab9b4-bba2-4c0b-ace1-c5cd86fa5cb0" xlink:to="loc_us-gaap_StatementTable_66c9fdcf-70fd-416f-ae5f-d48ac37cdcb3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_e4cd08e7-a457-47ad-aab2-f54be871143f" 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_StatementTable_66c9fdcf-70fd-416f-ae5f-d48ac37cdcb3" xlink:to="loc_srt_StatementGeographicalAxis_e4cd08e7-a457-47ad-aab2-f54be871143f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_e4cd08e7-a457-47ad-aab2-f54be871143f_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_e4cd08e7-a457-47ad-aab2-f54be871143f" xlink:to="loc_srt_SegmentGeographicalDomain_e4cd08e7-a457-47ad-aab2-f54be871143f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_81a42144-a001-47f6-afed-8912c61db3ae" 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_e4cd08e7-a457-47ad-aab2-f54be871143f" xlink:to="loc_srt_SegmentGeographicalDomain_81a42144-a001-47f6-afed-8912c61db3ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_CA_2b353877-ee2c-4423-b104-1fd9e314ea60" 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_81a42144-a001-47f6-afed-8912c61db3ae" xlink:to="loc_stpr_CA_2b353877-ee2c-4423-b104-1fd9e314ea60" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_FL_d24df2b9-1ff3-4622-8cde-e9cc3455eac1" 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_81a42144-a001-47f6-afed-8912c61db3ae" xlink:to="loc_stpr_FL_d24df2b9-1ff3-4622-8cde-e9cc3455eac1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_NJ_628806f1-702e-4b94-b6e4-1d7a7cc7ba61" 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_81a42144-a001-47f6-afed-8912c61db3ae" xlink:to="loc_stpr_NJ_628806f1-702e-4b94-b6e4-1d7a7cc7ba61" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_AllOtherStatesMember_e72476aa-de79-4a81-b3be-4d45e7a6a326" xlink:href="fnf-20200630.xsd#fnf_AllOtherStatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_81a42144-a001-47f6-afed-8912c61db3ae" xlink:to="loc_fnf_AllOtherStatesMember_e72476aa-de79-4a81-b3be-4d45e7a6a326" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_8be474bb-c688-475f-8dbd-55873fd240e2" 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_StatementTable_66c9fdcf-70fd-416f-ae5f-d48ac37cdcb3" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_8be474bb-c688-475f-8dbd-55873fd240e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_8be474bb-c688-475f-8dbd-55873fd240e2_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_8be474bb-c688-475f-8dbd-55873fd240e2" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_8be474bb-c688-475f-8dbd-55873fd240e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_aa3fc4e3-bbf3-418c-bdf9-d45f9b6e665d" 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_8be474bb-c688-475f-8dbd-55873fd240e2" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_aa3fc4e3-bbf3-418c-bdf9-d45f9b6e665d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TotalMortgageLoansMember_3e1b1e4f-d229-4a31-9397-dc4af0eac61e" xlink:href="fnf-20200630.xsd#fnf_TotalMortgageLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_aa3fc4e3-bbf3-418c-bdf9-d45f9b6e665d" xlink:to="loc_fnf_TotalMortgageLoansMember_3e1b1e4f-d229-4a31-9397-dc4af0eac61e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsCreditQualityofRMLsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsCreditQualityofRMLsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsCreditQualityofRMLsDetails" xlink:type="extended" id="i35eaf48fb4034320818f25dd2f163076_InvestmentsCreditQualityofRMLsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_83c37470-5f1f-4665-acd5-2395f24f561c" 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_681c5a49-42a3-4824-8b58-57ce0fa5e18d" xlink:href="fnf-20200630.xsd#fnf_LoansReceivableGrossMortgageLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_83c37470-5f1f-4665-acd5-2395f24f561c" xlink:to="loc_fnf_LoansReceivableGrossMortgageLoans_681c5a49-42a3-4824-8b58-57ce0fa5e18d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance_82b1ed9a-3237-4ced-a41b-fcef6192b08f" 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_83c37470-5f1f-4665-acd5-2395f24f561c" xlink:to="loc_us-gaap_LoansAndLeasesReceivableAllowance_82b1ed9a-3237-4ced-a41b-fcef6192b08f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_07b4cc77-34d1-4bf4-8514-83123fb66336" 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_83c37470-5f1f-4665-acd5-2395f24f561c" xlink:to="loc_us-gaap_NotesReceivableNet_07b4cc77-34d1-4bf4-8514-83123fb66336" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_122b3278-4680-49b9-bfe5-67d4bfc8102c" xlink:href="fnf-20200630.xsd#fnf_ResidentialMortgageReceivablePercentageofTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_83c37470-5f1f-4665-acd5-2395f24f561c" xlink:to="loc_fnf_ResidentialMortgageReceivablePercentageofTotal_122b3278-4680-49b9-bfe5-67d4bfc8102c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoansAndLeasesReceivableAllowanceMortgageLoansPercentageOfTotal_c87b37e3-9cf3-41b1-89b2-2595d5b21803" xlink:href="fnf-20200630.xsd#fnf_LoansAndLeasesReceivableAllowanceMortgageLoansPercentageOfTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_83c37470-5f1f-4665-acd5-2395f24f561c" xlink:to="loc_fnf_LoansAndLeasesReceivableAllowanceMortgageLoansPercentageOfTotal_c87b37e3-9cf3-41b1-89b2-2595d5b21803" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_3da7a194-f67b-440d-9017-639121de12ae" 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_83c37470-5f1f-4665-acd5-2395f24f561c" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_3da7a194-f67b-440d-9017-639121de12ae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_2c7f4198-2f32-4b80-a8f0-440d1d63ab81" 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_3da7a194-f67b-440d-9017-639121de12ae" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_2c7f4198-2f32-4b80-a8f0-440d1d63ab81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_2c7f4198-2f32-4b80-a8f0-440d1d63ab81_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_2c7f4198-2f32-4b80-a8f0-440d1d63ab81" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_2c7f4198-2f32-4b80-a8f0-440d1d63ab81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_6adc3497-1421-44e7-b59b-daffb93bcb3e" 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_2c7f4198-2f32-4b80-a8f0-440d1d63ab81" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_6adc3497-1421-44e7-b59b-daffb93bcb3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_a484c625-a070-4658-821a-b60f4f6cdd05" 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_6adc3497-1421-44e7-b59b-daffb93bcb3e" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_a484c625-a070-4658-821a-b60f4f6cdd05" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_e7f1fa01-95cc-4ed8-a38a-4581ac0b1943" 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_3da7a194-f67b-440d-9017-639121de12ae" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_e7f1fa01-95cc-4ed8-a38a-4581ac0b1943" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_e7f1fa01-95cc-4ed8-a38a-4581ac0b1943_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_e7f1fa01-95cc-4ed8-a38a-4581ac0b1943" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_e7f1fa01-95cc-4ed8-a38a-4581ac0b1943_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_c29129a3-3352-43f1-9220-ec4858394c69" 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_e7f1fa01-95cc-4ed8-a38a-4581ac0b1943" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_c29129a3-3352-43f1-9220-ec4858394c69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_eb617911-39be-4fe8-9f86-c12ce9e8cc4f" 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_c29129a3-3352-43f1-9220-ec4858394c69" xlink:to="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_eb617911-39be-4fe8-9f86-c12ce9e8cc4f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_17738696-4956-498e-ab3d-ff471fb7fe20" 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_3da7a194-f67b-440d-9017-639121de12ae" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusAxis_17738696-4956-498e-ab3d-ff471fb7fe20" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_17738696-4956-498e-ab3d-ff471fb7fe20_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_17738696-4956-498e-ab3d-ff471fb7fe20" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_17738696-4956-498e-ab3d-ff471fb7fe20_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_56769023-ea44-4c78-82fb-00be5bdeccf2" 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_17738696-4956-498e-ab3d-ff471fb7fe20" xlink:to="loc_us-gaap_FinancialInstrumentPerformanceStatusDomain_56769023-ea44-4c78-82fb-00be5bdeccf2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformingFinancingReceivableMember_74c6d9fc-f4f7-45a5-8255-630d42373315" 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_56769023-ea44-4c78-82fb-00be5bdeccf2" xlink:to="loc_us-gaap_PerformingFinancingReceivableMember_74c6d9fc-f4f7-45a5-8255-630d42373315" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonperformingFinancingReceivableMember_34bcefb0-3618-47ac-bfd3-c474de5e4c07" 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_56769023-ea44-4c78-82fb-00be5bdeccf2" xlink:to="loc_us-gaap_NonperformingFinancingReceivableMember_34bcefb0-3618-47ac-bfd3-c474de5e4c07" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsLoansSegregatedByRiskRatingDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsLoansSegregatedByRiskRatingDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsLoansSegregatedByRiskRatingDetails" xlink:type="extended" id="i2aee0b2e81f84a48a3350f5d5085a5c0_InvestmentsLoansSegregatedByRiskRatingDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_498de553-5ca8-4313-bdba-fb66be7483ad" 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_ba2b0c3c-8ca8-4be7-9cd6-e845a3fc657e" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_ba2b0c3c-8ca8-4be7-9cd6-e845a3fc657e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_65cd5c0b-9c35-4f2e-bc53-0550335f1207" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_65cd5c0b-9c35-4f2e-bc53-0550335f1207" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_a9ca1c07-5197-4b0e-9468-da6bbce076b4" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_a9ca1c07-5197-4b0e-9468-da6bbce076b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_b16d1900-4e93-489c-bd58-38c928b1d0dc" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_b16d1900-4e93-489c-bd58-38c928b1d0dc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_7ff1863f-99ad-4b57-abdd-be7fcfc1855d" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_7ff1863f-99ad-4b57-abdd-be7fcfc1855d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_d8b2852d-5729-4015-9d1e-b4adf7e3fafc" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_d8b2852d-5729-4015-9d1e-b4adf7e3fafc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_7a6e2798-cabd-4508-9ab6-5fb32d616f33" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_NotesReceivableGross_7a6e2798-cabd-4508-9ab6-5fb32d616f33" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LoansAtAmortizedCostNonaccrual_fed4f866-8fc1-413a-89ee-7ec44a845886" xlink:href="fnf-20200630.xsd#fnf_LoansAtAmortizedCostNonaccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_fnf_LoansAtAmortizedCostNonaccrual_fed4f866-8fc1-413a-89ee-7ec44a845886" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_634398e9-efda-4cee-8152-dd71d500d2a6" 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_498de553-5ca8-4313-bdba-fb66be7483ad" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_634398e9-efda-4cee-8152-dd71d500d2a6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_64148c88-5e0c-43f1-8b4e-b0631822a499" 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_634398e9-efda-4cee-8152-dd71d500d2a6" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_64148c88-5e0c-43f1-8b4e-b0631822a499" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_64148c88-5e0c-43f1-8b4e-b0631822a499_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_64148c88-5e0c-43f1-8b4e-b0631822a499" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_64148c88-5e0c-43f1-8b4e-b0631822a499_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_8738efb4-af69-4aac-841a-c84c60eac5ba" 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_64148c88-5e0c-43f1-8b4e-b0631822a499" xlink:to="loc_us-gaap_FinancingReceivablePortfolioSegmentDomain_8738efb4-af69-4aac-841a-c84c60eac5ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialPortfolioSegmentMember_06fbe2f3-0750-405a-93c7-7a6e839d9c74" 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_8738efb4-af69-4aac-841a-c84c60eac5ba" xlink:to="loc_us-gaap_ResidentialPortfolioSegmentMember_06fbe2f3-0750-405a-93c7-7a6e839d9c74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPortfolioSegmentMember_aab1fd6e-99bd-4378-a546-8ddaf8e3b13f" 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_8738efb4-af69-4aac-841a-c84c60eac5ba" xlink:to="loc_us-gaap_CommercialPortfolioSegmentMember_aab1fd6e-99bd-4378-a546-8ddaf8e3b13f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_f562752e-51f8-4120-998e-aeae2d2bd720" 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_634398e9-efda-4cee-8152-dd71d500d2a6" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_f562752e-51f8-4120-998e-aeae2d2bd720" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_f562752e-51f8-4120-998e-aeae2d2bd720_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_f562752e-51f8-4120-998e-aeae2d2bd720" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_f562752e-51f8-4120-998e-aeae2d2bd720_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_c3d18cfa-273f-4a91-91a9-9f9e630381ec" 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_f562752e-51f8-4120-998e-aeae2d2bd720" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_c3d18cfa-273f-4a91-91a9-9f9e630381ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivables1To29DaysPastDueMember_b048ed34-6b87-41b8-b92c-cf09cd2e37c4" 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_c3d18cfa-273f-4a91-91a9-9f9e630381ec" xlink:to="loc_us-gaap_FinancingReceivables1To29DaysPastDueMember_b048ed34-6b87-41b8-b92c-cf09cd2e37c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FinancialAsset30To89DaysPastDueMember_5f48cd85-ecdf-495c-9578-ac79ec12299f" xlink:href="fnf-20200630.xsd#fnf_FinancialAsset30To89DaysPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_c3d18cfa-273f-4a91-91a9-9f9e630381ec" xlink:to="loc_fnf_FinancialAsset30To89DaysPastDueMember_5f48cd85-ecdf-495c-9578-ac79ec12299f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_3b84aeb0-e95b-48ee-804c-97d28a000d6f" 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_c3d18cfa-273f-4a91-91a9-9f9e630381ec" xlink:to="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_3b84aeb0-e95b-48ee-804c-97d28a000d6f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueAxis_8b1324d3-d15e-4b16-a26a-a2591c893686" 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_634398e9-efda-4cee-8152-dd71d500d2a6" xlink:to="loc_us-gaap_LoanToValueAxis_8b1324d3-d15e-4b16-a26a-a2591c893686" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_8b1324d3-d15e-4b16-a26a-a2591c893686_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_8b1324d3-d15e-4b16-a26a-a2591c893686" xlink:to="loc_us-gaap_LoanToValueDomain_8b1324d3-d15e-4b16-a26a-a2591c893686_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanToValueDomain_9df3a84f-ff41-4b6f-9299-8e086323be3b" 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_8b1324d3-d15e-4b16-a26a-a2591c893686" xlink:to="loc_us-gaap_LoanToValueDomain_9df3a84f-ff41-4b6f-9299-8e086323be3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTVLessThan50PercentMember_cdc98eb2-25eb-4981-b259-ff8a06de965c" xlink:href="fnf-20200630.xsd#fnf_LTVLessThan50PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_9df3a84f-ff41-4b6f-9299-8e086323be3b" xlink:to="loc_fnf_LTVLessThan50PercentMember_cdc98eb2-25eb-4981-b259-ff8a06de965c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV50to60PercentMember_eb233158-4b89-4a07-a8ea-6c0bc0e760de" xlink:href="fnf-20200630.xsd#fnf_LTV50to60PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_9df3a84f-ff41-4b6f-9299-8e086323be3b" xlink:to="loc_fnf_LTV50to60PercentMember_eb233158-4b89-4a07-a8ea-6c0bc0e760de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LTV60to75PercentMember_3ad03d2e-cb8f-424c-9f09-d8fd20e2fec9" xlink:href="fnf-20200630.xsd#fnf_LTV60to75PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoanToValueDomain_9df3a84f-ff41-4b6f-9299-8e086323be3b" xlink:to="loc_fnf_LTV60to75PercentMember_3ad03d2e-cb8f-424c-9f09-d8fd20e2fec9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioAxis_bdad77ac-fc53-40e4-b979-e23e3f3eadf4" xlink:href="fnf-20200630.xsd#fnf_DebtServiceCoverageRatioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_634398e9-efda-4cee-8152-dd71d500d2a6" xlink:to="loc_fnf_DebtServiceCoverageRatioAxis_bdad77ac-fc53-40e4-b979-e23e3f3eadf4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioDomain_bdad77ac-fc53-40e4-b979-e23e3f3eadf4_default" xlink:href="fnf-20200630.xsd#fnf_DebtServiceCoverageRatioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_fnf_DebtServiceCoverageRatioAxis_bdad77ac-fc53-40e4-b979-e23e3f3eadf4" xlink:to="loc_fnf_DebtServiceCoverageRatioDomain_bdad77ac-fc53-40e4-b979-e23e3f3eadf4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtServiceCoverageRatioDomain_89d1755b-3b4b-4dc2-80ba-3b260bc8bc7f" xlink:href="fnf-20200630.xsd#fnf_DebtServiceCoverageRatioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_fnf_DebtServiceCoverageRatioAxis_bdad77ac-fc53-40e4-b979-e23e3f3eadf4" xlink:to="loc_fnf_DebtServiceCoverageRatioDomain_89d1755b-3b4b-4dc2-80ba-3b260bc8bc7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOnePointTwoFiveMember_65cc63f3-beda-477f-908e-5e734d5e2714" xlink:href="fnf-20200630.xsd#fnf_GreaterThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtServiceCoverageRatioDomain_89d1755b-3b4b-4dc2-80ba-3b260bc8bc7f" xlink:to="loc_fnf_GreaterThanOnePointTwoFiveMember_65cc63f3-beda-477f-908e-5e734d5e2714" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_52ec17e5-cf22-41c7-90ab-59e19ea2924a" xlink:href="fnf-20200630.xsd#fnf_GreaterThanOneButLessThanOnePointTwoFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtServiceCoverageRatioDomain_89d1755b-3b4b-4dc2-80ba-3b260bc8bc7f" xlink:to="loc_fnf_GreaterThanOneButLessThanOnePointTwoFiveMember_52ec17e5-cf22-41c7-90ab-59e19ea2924a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LessThanOnePointZeroZeroMember_d9fb3197-547b-4073-8ede-31104ddf7ca5" xlink:href="fnf-20200630.xsd#fnf_LessThanOnePointZeroZeroMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_fnf_DebtServiceCoverageRatioDomain_89d1755b-3b4b-4dc2-80ba-3b260bc8bc7f" xlink:to="loc_fnf_LessThanOnePointZeroZeroMember_d9fb3197-547b-4073-8ede-31104ddf7ca5" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsNetInvestmentIncomeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsNetInvestmentIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsNetInvestmentIncomeDetails" xlink:type="extended" id="i77fa3e8a0e2548649be3c8efe66ee954_InvestmentsNetInvestmentIncomeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_ac0af977-69b8-475e-8c6b-886270f86727" 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_93c91543-f820-4911-93de-2676ddf052e2" 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_ac0af977-69b8-475e-8c6b-886270f86727" xlink:to="loc_us-gaap_GrossInvestmentIncomeOperating_93c91543-f820-4911-93de-2676ddf052e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInvestmentExpense_e930cedf-2223-41de-a863-67a20af50fd4" 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_ac0af977-69b8-475e-8c6b-886270f86727" xlink:to="loc_us-gaap_InvestmentIncomeInvestmentExpense_e930cedf-2223-41de-a863-67a20af50fd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentIncome_80bbb102-fd34-4a9b-b949-bef1dcef8af0" 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_ac0af977-69b8-475e-8c6b-886270f86727" xlink:to="loc_us-gaap_NetInvestmentIncome_80bbb102-fd34-4a9b-b949-bef1dcef8af0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_cc8fc9ac-0562-41b1-adbb-d3592bde8938" 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_ac0af977-69b8-475e-8c6b-886270f86727" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_cc8fc9ac-0562-41b1-adbb-d3592bde8938" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_e23296a9-370d-4559-8f5e-f8a6f0c5ef2c" 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_cc8fc9ac-0562-41b1-adbb-d3592bde8938" xlink:to="loc_us-gaap_InvestmentTypeAxis_e23296a9-370d-4559-8f5e-f8a6f0c5ef2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_e23296a9-370d-4559-8f5e-f8a6f0c5ef2c_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_e23296a9-370d-4559-8f5e-f8a6f0c5ef2c" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_e23296a9-370d-4559-8f5e-f8a6f0c5ef2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" 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_e23296a9-370d-4559-8f5e-f8a6f0c5ef2c" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_0ee5ce9a-7a38-41f2-8d9d-2b84fa12473f" 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_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" xlink:to="loc_us-gaap_DebtSecuritiesMember_0ee5ce9a-7a38-41f2-8d9d-2b84fa12473f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_407ed4bb-aa2f-4147-bed6-86da654f890f" 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_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" xlink:to="loc_us-gaap_EquitySecuritiesMember_407ed4bb-aa2f-4147-bed6-86da654f890f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_9d4320a5-6475-414e-b2e2-6801acf9de3d" 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_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" xlink:to="loc_us-gaap_PreferredStockMember_9d4320a5-6475-414e-b2e2-6801acf9de3d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommercialMortgageLoanMember_bfbd3e22-dc36-4bf9-94e0-f83fdce385b7" xlink:href="fnf-20200630.xsd#fnf_CommercialMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" xlink:to="loc_fnf_CommercialMortgageLoanMember_bfbd3e22-dc36-4bf9-94e0-f83fdce385b7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InvestedCashAndShortTermInvestmentsMember_a3554bd3-6e27-4d9e-bc48-9d21057b6718" xlink:href="fnf-20200630.xsd#fnf_InvestedCashAndShortTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" xlink:to="loc_fnf_InvestedCashAndShortTermInvestmentsMember_a3554bd3-6e27-4d9e-bc48-9d21057b6718" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherInvestmentsMember_e0ca90a9-309a-4577-a3f6-a88041c603db" 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_0eaa0e68-833f-484f-99e6-8d6ceea04dd0" xlink:to="loc_us-gaap_OtherInvestmentsMember_e0ca90a9-309a-4577-a3f6-a88041c603db" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsInvestmentGainsLossesNetDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsInvestmentGainsLossesNetDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsInvestmentGainsLossesNetDetails" xlink:type="extended" id="ibd31efafa9eb402cbce12dc25b7f4bea_InvestmentsInvestmentGainsLossesNetDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsLineItems_658779b2-f35b-4570-8ba7-ad41eb1f78a3" 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_GainLossOnSaleOfDebtInvestments_c37b49f5-0bf3-4d39-a911-86d79186e5f0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfDebtInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_GainLossOnSaleOfDebtInvestments_c37b49f5-0bf3-4d39-a911-86d79186e5f0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfEquityInvestments_8313b736-89fe-4e90-9432-e457f2fde879" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfEquityInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_GainLossOnSaleOfEquityInvestments_8313b736-89fe-4e90-9432-e457f2fde879" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfOtherInvestments_adfbb78d-7583-46f1-a347-9917e3e29900" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_GainLossOnSaleOfOtherInvestments_adfbb78d-7583-46f1-a347-9917e3e29900" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_67bce01b-e349-4e65-ab38-244d897eec38" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_67bce01b-e349-4e65-ab38-244d897eec38" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfDerivatives_51f3c2a1-c608-4823-82be-a8afd00fe18e" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_GainLossOnSaleOfDerivatives_51f3c2a1-c608-4823-82be-a8afd00fe18e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_eb805da4-5376-44ed-b84f-1e7d97232ca9" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_eb805da4-5376-44ed-b84f-1e7d97232ca9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_1712f430-1672-4c79-9cfa-3230a3b16e23" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_1712f430-1672-4c79-9cfa-3230a3b16e23" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet_e385372d-c7b8-4de5-a0ae-53e201e6da4b" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet_e385372d-c7b8-4de5-a0ae-53e201e6da4b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ChangeInFairValueDerivativesIncludingOtherDerivatives_1b40471c-5da9-405f-82af-eb9acc7663aa" xlink:href="fnf-20200630.xsd#fnf_ChangeInFairValueDerivativesIncludingOtherDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfInvestmentsLineItems_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_fnf_ChangeInFairValueDerivativesIncludingOtherDerivatives_1b40471c-5da9-405f-82af-eb9acc7663aa" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_d5b75c55-1cb1-4e3a-90e7-f09b1bced463" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_GainLossOnInvestments_d5b75c55-1cb1-4e3a-90e7-f09b1bced463" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInvestmentsTable_1e7d07fb-e66e-4709-b1e8-0b2a21ff58f3" 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_658779b2-f35b-4570-8ba7-ad41eb1f78a3" xlink:to="loc_us-gaap_ScheduleOfInvestmentsTable_1e7d07fb-e66e-4709-b1e8-0b2a21ff58f3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_af721cfd-df74-4f07-8992-3f839f978a9b" 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_1e7d07fb-e66e-4709-b1e8-0b2a21ff58f3" xlink:to="loc_us-gaap_InvestmentTypeAxis_af721cfd-df74-4f07-8992-3f839f978a9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_af721cfd-df74-4f07-8992-3f839f978a9b_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_af721cfd-df74-4f07-8992-3f839f978a9b" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_af721cfd-df74-4f07-8992-3f839f978a9b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_694782ac-a7e4-4bf0-a978-5fdd4c9f1760" 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_af721cfd-df74-4f07-8992-3f839f978a9b" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_694782ac-a7e4-4bf0-a978-5fdd4c9f1760" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_61401114-ca07-45ad-a4c2-440a62650d70" 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_694782ac-a7e4-4bf0-a978-5fdd4c9f1760" xlink:to="loc_us-gaap_EquitySecuritiesMember_61401114-ca07-45ad-a4c2-440a62650d70" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_43bf96a6-74ba-46ed-a4a9-f45886fd41cd" 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_694782ac-a7e4-4bf0-a978-5fdd4c9f1760" xlink:to="loc_us-gaap_PreferredStockMember_43bf96a6-74ba-46ed-a4a9-f45886fd41cd" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails" xlink:type="extended" id="ia92f0c160cee45dfb5dbe7531faea7dc_InvestmentsProceedsFromTheSaleofFixedMaturityAvailableForSaleSecuritiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5f26cdd1-b17b-4003-a10a-0849df7ab22f" 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_9b338d20-fdd1-442d-ae10-c0e15ce4013d" 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_5f26cdd1-b17b-4003-a10a-0849df7ab22f" xlink:to="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_9b338d20-fdd1-442d-ae10-c0e15ce4013d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainOnSaleOfInvestments_9357bdcb-a47e-4e0f-99c0-c50c7e0d333c" 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_5f26cdd1-b17b-4003-a10a-0849df7ab22f" xlink:to="loc_us-gaap_GainOnSaleOfInvestments_9357bdcb-a47e-4e0f-99c0-c50c7e0d333c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossOnSaleOfInvestments_d1a49921-e3e2-4f88-86b8-5c644d30ff33" 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_5f26cdd1-b17b-4003-a10a-0849df7ab22f" xlink:to="loc_us-gaap_LossOnSaleOfInvestments_d1a49921-e3e2-4f88-86b8-5c644d30ff33" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_3920d332-4a32-4b4e-96e1-c60b898451f9" 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_5f26cdd1-b17b-4003-a10a-0849df7ab22f" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_3920d332-4a32-4b4e-96e1-c60b898451f9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_b9c1d47c-e9b1-4e3a-9067-04d3219b54fd" 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_3920d332-4a32-4b4e-96e1-c60b898451f9" xlink:to="loc_us-gaap_InvestmentTypeAxis_b9c1d47c-e9b1-4e3a-9067-04d3219b54fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_b9c1d47c-e9b1-4e3a-9067-04d3219b54fd_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_b9c1d47c-e9b1-4e3a-9067-04d3219b54fd" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_b9c1d47c-e9b1-4e3a-9067-04d3219b54fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_b17e3b14-3821-4091-a592-b9f4713db38d" 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_b9c1d47c-e9b1-4e3a-9067-04d3219b54fd" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_b17e3b14-3821-4091-a592-b9f4713db38d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedMaturitiesMember_ebe871de-4bde-432e-91fd-6592f81f4abf" 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_b17e3b14-3821-4091-a592-b9f4713db38d" xlink:to="loc_us-gaap_FixedMaturitiesMember_ebe871de-4bde-432e-91fd-6592f81f4abf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_31f0f84f-56f8-461b-a53a-e193715d4146" 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_3920d332-4a32-4b4e-96e1-c60b898451f9" xlink:to="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_31f0f84f-56f8-461b-a53a-e193715d4146" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_31f0f84f-56f8-461b-a53a-e193715d4146_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_31f0f84f-56f8-461b-a53a-e193715d4146" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_31f0f84f-56f8-461b-a53a-e193715d4146_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_614b9bb1-6ba5-4fc9-afdd-8010aeeaa136" 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_31f0f84f-56f8-461b-a53a-e193715d4146" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_614b9bb1-6ba5-4fc9-afdd-8010aeeaa136" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesMember_38382230-c546-48dc-9a5b-64f91388b67a" 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_614b9bb1-6ba5-4fc9-afdd-8010aeeaa136" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesMember_38382230-c546-48dc-9a5b-64f91388b67a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstruments" xlink:type="simple" xlink:href="fnf-20200630.xsd#DerivativeFinancialInstruments"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstruments" xlink:type="extended" id="id0d16a49bf2c4b62ae9836dafd6a7df4_DerivativeFinancialInstruments"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#DerivativeFinancialInstrumentsTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsTables" xlink:type="extended" id="i13e21a5e6da746bfa9e3bb3fff2f0b90_DerivativeFinancialInstrumentsTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsFairValueofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#DerivativeFinancialInstrumentsFairValueofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsFairValueofDerivativeInstrumentsDetails" xlink:type="extended" id="i5a6ab799be654e40aa36b92f2f6a7889_DerivativeFinancialInstrumentsFairValueofDerivativeInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_3d15d9c6-c2c2-40b9-b386-4831b2008767" 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_c002fffa-0581-4139-9dd3-c9780df9fa01" 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_3d15d9c6-c2c2-40b9-b386-4831b2008767" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_c002fffa-0581-4139-9dd3-c9780df9fa01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_a825588b-d431-4379-adc8-f3deadaec524" 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_3d15d9c6-c2c2-40b9-b386-4831b2008767" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_a825588b-d431-4379-adc8-f3deadaec524" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_8f17190b-a548-4b95-b132-31691ecd46db" 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_3d15d9c6-c2c2-40b9-b386-4831b2008767" xlink:to="loc_us-gaap_DerivativeTable_8f17190b-a548-4b95-b132-31691ecd46db" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_807afe31-42d7-42cb-b061-4b1878ff5c4e" 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_8f17190b-a548-4b95-b132-31691ecd46db" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_807afe31-42d7-42cb-b061-4b1878ff5c4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_807afe31-42d7-42cb-b061-4b1878ff5c4e_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_807afe31-42d7-42cb-b061-4b1878ff5c4e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_807afe31-42d7-42cb-b061-4b1878ff5c4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_b7c63705-79ad-4068-9a7b-ca91cb8980b1" 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_807afe31-42d7-42cb-b061-4b1878ff5c4e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_b7c63705-79ad-4068-9a7b-ca91cb8980b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_c828948d-af24-4649-b82a-36a15d464a58" 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_b7c63705-79ad-4068-9a7b-ca91cb8980b1" xlink:to="loc_us-gaap_CallOptionMember_c828948d-af24-4649-b82a-36a15d464a58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FutureMember_adb2074f-18ab-4ea9-a8d1-d0be649c671e" 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_b7c63705-79ad-4068-9a7b-ca91cb8980b1" xlink:to="loc_us-gaap_FutureMember_adb2074f-18ab-4ea9-a8d1-d0be649c671e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_8384a405-8eb6-43c2-a2f8-81db6d99ee42" 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_b7c63705-79ad-4068-9a7b-ca91cb8980b1" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_8384a405-8eb6-43c2-a2f8-81db6d99ee42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FiaEmbeddedDerivativesMember_9c44eba0-8993-42ee-bcf0-0ab466571352" xlink:href="fnf-20200630.xsd#fnf_FiaEmbeddedDerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_b7c63705-79ad-4068-9a7b-ca91cb8980b1" xlink:to="loc_fnf_FiaEmbeddedDerivativesMember_9c44eba0-8993-42ee-bcf0-0ab466571352" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_0ce2701e-b810-4c72-b0b6-6b0ceaedb62c" xlink:href="fnf-20200630.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_b7c63705-79ad-4068-9a7b-ca91cb8980b1" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_0ce2701e-b810-4c72-b0b6-6b0ceaedb62c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_2d65a9e5-0aec-4cc2-ae4e-d7e5bf06ef8c" 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_8f17190b-a548-4b95-b132-31691ecd46db" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_2d65a9e5-0aec-4cc2-ae4e-d7e5bf06ef8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_2d65a9e5-0aec-4cc2-ae4e-d7e5bf06ef8c_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_2d65a9e5-0aec-4cc2-ae4e-d7e5bf06ef8c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_2d65a9e5-0aec-4cc2-ae4e-d7e5bf06ef8c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_41d0d004-7527-4ff5-890c-892179e02af5" 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_2d65a9e5-0aec-4cc2-ae4e-d7e5bf06ef8c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_41d0d004-7527-4ff5-890c-892179e02af5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeInstrumentsMember_e03ef981-0d8a-4665-a770-2d9f17242591" xlink:href="fnf-20200630.xsd#fnf_DerivativeInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_41d0d004-7527-4ff5-890c-892179e02af5" xlink:to="loc_fnf_DerivativeInstrumentsMember_e03ef981-0d8a-4665-a770-2d9f17242591" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherInvestedAssetsMember_0e861d40-2683-4180-b987-36ef8cc0bee4" xlink:href="fnf-20200630.xsd#fnf_OtherInvestedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_41d0d004-7527-4ff5-890c-892179e02af5" xlink:to="loc_fnf_OtherInvestedAssetsMember_0e861d40-2683-4180-b987-36ef8cc0bee4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractHolderFundsMember_a63ce765-4b3c-4924-aaa7-ec184c51e5c4" 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_41d0d004-7527-4ff5-890c-892179e02af5" xlink:to="loc_us-gaap_ContractHolderFundsMember_a63ce765-4b3c-4924-aaa7-ec184c51e5c4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_8578e687-6185-41cf-bfff-887b32d3d016" xlink:href="fnf-20200630.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_41d0d004-7527-4ff5-890c-892179e02af5" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_8578e687-6185-41cf-bfff-887b32d3d016" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails" xlink:type="extended" id="ie5d4cb95e7674ad890af422496e3adb8_DerivativeFinancialInstrumentsScheduleofChangeinFairValueofDerivativeInstrumentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_9e8dda49-c191-43f1-882d-23e7f1d7710a" 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_88009b1c-92f6-4dea-9f65-1c80d385de1a" 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_9e8dda49-c191-43f1-882d-23e7f1d7710a" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_88009b1c-92f6-4dea-9f65-1c80d385de1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ChangeInFairValueOfDerivatives_2a7e2731-5a1d-4c16-8472-af656e41ac12" xlink:href="fnf-20200630.xsd#fnf_ChangeInFairValueOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_9e8dda49-c191-43f1-882d-23e7f1d7710a" xlink:to="loc_fnf_ChangeInFairValueOfDerivatives_2a7e2731-5a1d-4c16-8472-af656e41ac12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_35262b5e-baa6-455b-b696-52b2a25a4eb0" 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_9e8dda49-c191-43f1-882d-23e7f1d7710a" xlink:to="loc_us-gaap_DerivativeTable_35262b5e-baa6-455b-b696-52b2a25a4eb0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_12db4805-68dd-41b1-8e9e-055bcedb8e02" 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_35262b5e-baa6-455b-b696-52b2a25a4eb0" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_12db4805-68dd-41b1-8e9e-055bcedb8e02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_12db4805-68dd-41b1-8e9e-055bcedb8e02_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_12db4805-68dd-41b1-8e9e-055bcedb8e02" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_12db4805-68dd-41b1-8e9e-055bcedb8e02_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_345b1f97-b311-4cdb-bd3a-51a956385028" 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_12db4805-68dd-41b1-8e9e-055bcedb8e02" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_345b1f97-b311-4cdb-bd3a-51a956385028" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_847680ce-36d1-4f8a-8104-c3bfdb7b2a4d" 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_345b1f97-b311-4cdb-bd3a-51a956385028" xlink:to="loc_us-gaap_CallOptionMember_847680ce-36d1-4f8a-8104-c3bfdb7b2a4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FutureMember_c52dc386-d8f8-4496-af6f-039089e72077" 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_345b1f97-b311-4cdb-bd3a-51a956385028" xlink:to="loc_us-gaap_FutureMember_c52dc386-d8f8-4496-af6f-039089e72077" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_e77f1578-6dff-457d-8860-cf7de0448342" 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_345b1f97-b311-4cdb-bd3a-51a956385028" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_e77f1578-6dff-457d-8860-cf7de0448342" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_58b3dd10-49d0-4dfb-9371-2766df647eae" 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_345b1f97-b311-4cdb-bd3a-51a956385028" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_58b3dd10-49d0-4dfb-9371-2766df647eae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_520dd7ad-a68e-46e6-a470-4e474f02fe59" xlink:href="fnf-20200630.xsd#fnf_EmbeddedDerivativesinReinsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_345b1f97-b311-4cdb-bd3a-51a956385028" xlink:to="loc_fnf_EmbeddedDerivativesinReinsuranceContractsMember_520dd7ad-a68e-46e6-a470-4e474f02fe59" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FiaEmbeddedDerivativesMember_48ceeb4d-01e6-4788-9bd0-2372fbe3c9c6" xlink:href="fnf-20200630.xsd#fnf_FiaEmbeddedDerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_345b1f97-b311-4cdb-bd3a-51a956385028" xlink:to="loc_fnf_FiaEmbeddedDerivativesMember_48ceeb4d-01e6-4788-9bd0-2372fbe3c9c6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_997ad21a-16e5-44a7-8e6b-04eda9b38906" 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_35262b5e-baa6-455b-b696-52b2a25a4eb0" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_997ad21a-16e5-44a7-8e6b-04eda9b38906" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_997ad21a-16e5-44a7-8e6b-04eda9b38906_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_997ad21a-16e5-44a7-8e6b-04eda9b38906" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_997ad21a-16e5-44a7-8e6b-04eda9b38906_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_f3c74537-ac92-497e-88c5-74eda2a78813" 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_997ad21a-16e5-44a7-8e6b-04eda9b38906" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_f3c74537-ac92-497e-88c5-74eda2a78813" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NetRealizedInvestmentGainsMember_7a63c5f6-8a3c-4540-8ea5-8a3f3938ac4d" xlink:href="fnf-20200630.xsd#fnf_NetRealizedInvestmentGainsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_f3c74537-ac92-497e-88c5-74eda2a78813" xlink:to="loc_fnf_NetRealizedInvestmentGainsMember_7a63c5f6-8a3c-4540-8ea5-8a3f3938ac4d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#DerivativeFinancialInstrumentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsNarrativeDetails" xlink:type="extended" id="i4bc60a39758f4c9ba995ba4e974cb869_DerivativeFinancialInstrumentsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_d857d9f3-cd0f-4110-b535-06aa7d220cb6" 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_68bc2ff1-b8ad-4956-8f01-160d273fc8fe" xlink:href="fnf-20200630.xsd#fnf_DerivativeTermofContractTermOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_fnf_DerivativeTermofContractTermOne_68bc2ff1-b8ad-4956-8f01-160d273fc8fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeTermofContractTermTwo_e85dae6e-4e80-4dcf-8c67-3d7634600bde" xlink:href="fnf-20200630.xsd#fnf_DerivativeTermofContractTermTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_fnf_DerivativeTermofContractTermTwo_e85dae6e-4e80-4dcf-8c67-3d7634600bde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeTermofContractTermThree_4c746af8-eacc-4f17-8859-ddce9b9c8387" xlink:href="fnf-20200630.xsd#fnf_DerivativeTermofContractTermThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_fnf_DerivativeTermofContractTermThree_4c746af8-eacc-4f17-8859-ddce9b9c8387" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativeTermofContractTermFour_be22fcef-bfae-46f4-a03c-989023471262" xlink:href="fnf-20200630.xsd#fnf_DerivativeTermofContractTermFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_fnf_DerivativeTermofContractTermFour_be22fcef-bfae-46f4-a03c-989023471262" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_7812d2b2-4058-4268-8347-2ac24df73ad0" 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_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_7812d2b2-4058-4268-8347-2ac24df73ad0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_a36454c3-4ae9-4d53-9c64-4b0a3df11c3e" 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_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_a36454c3-4ae9-4d53-9c64-4b0a3df11c3e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_ccce6c63-b0a8-4217-be9e-7e5eb375fd8a" 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_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_ccce6c63-b0a8-4217-be9e-7e5eb375fd8a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_06d6124a-3206-4824-b1fc-3c4b9001f104" 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_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_06d6124a-3206-4824-b1fc-3c4b9001f104" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_bd3a6dbf-f833-4f38-ba67-0bbbb092b488" 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_d857d9f3-cd0f-4110-b535-06aa7d220cb6" xlink:to="loc_us-gaap_DerivativeTable_bd3a6dbf-f833-4f38-ba67-0bbbb092b488" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_ddb7d53e-800c-4e45-9781-1c194261fa40" 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_bd3a6dbf-f833-4f38-ba67-0bbbb092b488" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_ddb7d53e-800c-4e45-9781-1c194261fa40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ddb7d53e-800c-4e45-9781-1c194261fa40_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_ddb7d53e-800c-4e45-9781-1c194261fa40" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ddb7d53e-800c-4e45-9781-1c194261fa40_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_69ef8f7d-d936-4c85-8572-54cd40e00215" 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_ddb7d53e-800c-4e45-9781-1c194261fa40" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_69ef8f7d-d936-4c85-8572-54cd40e00215" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_4d35ed5a-749b-45c0-8e43-55a275c50a77" 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_69ef8f7d-d936-4c85-8572-54cd40e00215" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_4d35ed5a-749b-45c0-8e43-55a275c50a77" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_fd437bb8-b189-40a4-8c24-ea4da433fda9" 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_69ef8f7d-d936-4c85-8572-54cd40e00215" xlink:to="loc_us-gaap_CallOptionMember_fd437bb8-b189-40a4-8c24-ea4da433fda9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FutureMember_3990300d-ead4-4800-a3c3-b3bd775aec7b" 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_69ef8f7d-d936-4c85-8572-54cd40e00215" xlink:to="loc_us-gaap_FutureMember_3990300d-ead4-4800-a3c3-b3bd775aec7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_ba628261-607a-4608-8f20-d858200097c9" 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_bd3a6dbf-f833-4f38-ba67-0bbbb092b488" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_ba628261-607a-4608-8f20-d858200097c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_ba628261-607a-4608-8f20-d858200097c9_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_ba628261-607a-4608-8f20-d858200097c9" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_ba628261-607a-4608-8f20-d858200097c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_bcea46cd-3a54-4f2c-a4af-c6eac004cc51" 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_ba628261-607a-4608-8f20-d858200097c9" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_bcea46cd-3a54-4f2c-a4af-c6eac004cc51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DerivativesForTradingAndInvestmentMember_11f14be4-7bde-431d-ab62-82280ab5d9ac" xlink:href="fnf-20200630.xsd#fnf_DerivativesForTradingAndInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_bcea46cd-3a54-4f2c-a4af-c6eac004cc51" xlink:to="loc_fnf_DerivativesForTradingAndInvestmentMember_11f14be4-7bde-431d-ab62-82280ab5d9ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_5efbbe67-b8bf-4730-9acd-48901bf15d3b" 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_bcea46cd-3a54-4f2c-a4af-c6eac004cc51" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_5efbbe67-b8bf-4730-9acd-48901bf15d3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_e9d8df6d-db5c-4fef-bd55-5bc6eb430289" 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_bd3a6dbf-f833-4f38-ba67-0bbbb092b488" xlink:to="loc_us-gaap_HedgingDesignationAxis_e9d8df6d-db5c-4fef-bd55-5bc6eb430289" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_e9d8df6d-db5c-4fef-bd55-5bc6eb430289_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_e9d8df6d-db5c-4fef-bd55-5bc6eb430289" xlink:to="loc_us-gaap_HedgingDesignationDomain_e9d8df6d-db5c-4fef-bd55-5bc6eb430289_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_d6c908b5-8722-4a37-af77-254fb5faa428" 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_e9d8df6d-db5c-4fef-bd55-5bc6eb430289" xlink:to="loc_us-gaap_HedgingDesignationDomain_d6c908b5-8722-4a37-af77-254fb5faa428" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_51c153c5-1e85-4214-802e-ecfc554c0a13" 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_d6c908b5-8722-4a37-af77-254fb5faa428" xlink:to="loc_us-gaap_NondesignatedMember_51c153c5-1e85-4214-802e-ecfc554c0a13" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail" xlink:type="simple" xlink:href="fnf-20200630.xsd#DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail" xlink:type="extended" id="id035a10ef8a044a1b6fc8405ea8e7ac5_DerivativeFinancialInstrumentsFGLsExposuretoCreditLossonCallOptionsHeldDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_d8dd3270-f3ed-4a95-9364-38549d0f63d3" 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_aba8f502-cc5c-4d91-b779-563afe76368d" 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_d8dd3270-f3ed-4a95-9364-38549d0f63d3" xlink:to="loc_us-gaap_DerivativeNotionalAmount_aba8f502-cc5c-4d91-b779-563afe76368d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_18b5af69-7ea9-4631-b609-efe127512fa7" 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_d8dd3270-f3ed-4a95-9364-38549d0f63d3" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_18b5af69-7ea9-4631-b609-efe127512fa7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_9976b169-30dc-4334-8168-3b2009781449" 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_d8dd3270-f3ed-4a95-9364-38549d0f63d3" xlink:to="loc_us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset_9976b169-30dc-4334-8168-3b2009781449" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_b26c9894-73e6-4547-b82b-249b4001a945" 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_d8dd3270-f3ed-4a95-9364-38549d0f63d3" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_b26c9894-73e6-4547-b82b-249b4001a945" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_422afacd-8ae3-4fce-9d2a-5bc0da962218" 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_d8dd3270-f3ed-4a95-9364-38549d0f63d3" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_422afacd-8ae3-4fce-9d2a-5bc0da962218" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_eba54b30-5052-4442-b07b-102c218df717" 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_422afacd-8ae3-4fce-9d2a-5bc0da962218" xlink:to="loc_us-gaap_HedgingDesignationAxis_eba54b30-5052-4442-b07b-102c218df717" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_eba54b30-5052-4442-b07b-102c218df717_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_eba54b30-5052-4442-b07b-102c218df717" xlink:to="loc_us-gaap_HedgingDesignationDomain_eba54b30-5052-4442-b07b-102c218df717_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_81f66223-d34b-4762-a17d-4813fa97e2ac" 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_eba54b30-5052-4442-b07b-102c218df717" xlink:to="loc_us-gaap_HedgingDesignationDomain_81f66223-d34b-4762-a17d-4813fa97e2ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_75e61d06-10e2-4004-8218-18f41a5e4edd" 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_81f66223-d34b-4762-a17d-4813fa97e2ac" xlink:to="loc_us-gaap_NondesignatedMember_75e61d06-10e2-4004-8218-18f41a5e4edd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_b833fa22-fb14-477f-aabe-56d64cc533ae" 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_422afacd-8ae3-4fce-9d2a-5bc0da962218" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_b833fa22-fb14-477f-aabe-56d64cc533ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_b833fa22-fb14-477f-aabe-56d64cc533ae_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_b833fa22-fb14-477f-aabe-56d64cc533ae" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_b833fa22-fb14-477f-aabe-56d64cc533ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_3f37b02b-1287-4238-b3a7-f7cd3647c7fd" 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_b833fa22-fb14-477f-aabe-56d64cc533ae" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_3f37b02b-1287-4238-b3a7-f7cd3647c7fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CallOptionMember_507e4494-536a-432a-a761-d51dd676f74f" 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_3f37b02b-1287-4238-b3a7-f7cd3647c7fd" xlink:to="loc_us-gaap_CallOptionMember_507e4494-536a-432a-a761-d51dd676f74f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_b6a5915c-7d2c-4562-adb1-18f80e070518" 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_422afacd-8ae3-4fce-9d2a-5bc0da962218" xlink:to="loc_srt_CounterpartyNameAxis_b6a5915c-7d2c-4562-adb1-18f80e070518" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_b6a5915c-7d2c-4562-adb1-18f80e070518_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_b6a5915c-7d2c-4562-adb1-18f80e070518" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_b6a5915c-7d2c-4562-adb1-18f80e070518_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" 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_b6a5915c-7d2c-4562-adb1-18f80e070518" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MerrillLynchMember_c63293f3-fdb7-44d9-abc5-d5815c093b4b" xlink:href="fnf-20200630.xsd#fnf_MerrillLynchMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:to="loc_fnf_MerrillLynchMember_c63293f3-fdb7-44d9-abc5-d5815c093b4b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeutscheBankMember_b865f52c-836f-4e46-aee4-efde35dab5e8" xlink:href="fnf-20200630.xsd#fnf_DeutscheBankMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:to="loc_fnf_DeutscheBankMember_b865f52c-836f-4e46-aee4-efde35dab5e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_MorganStanleyMember_70c438d8-5021-468f-9be8-95a0db51de77" xlink:href="fnf-20200630.xsd#fnf_MorganStanleyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:to="loc_fnf_MorganStanleyMember_70c438d8-5021-468f-9be8-95a0db51de77" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_BarclaysBankMember_8808a8bc-b1c2-4e32-91ba-bf3e7abd23ea" xlink:href="fnf-20200630.xsd#fnf_BarclaysBankMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:to="loc_fnf_BarclaysBankMember_8808a8bc-b1c2-4e32-91ba-bf3e7abd23ea" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CanadianImperialBankofCommerceMember_1e850e83-0991-468a-be20-807923734a27" xlink:href="fnf-20200630.xsd#fnf_CanadianImperialBankofCommerceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:to="loc_fnf_CanadianImperialBankofCommerceMember_1e850e83-0991-468a-be20-807923734a27" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WellsFargoMember_2a0033b2-9704-4e64-94c6-9d29422c0f27" xlink:href="fnf-20200630.xsd#fnf_WellsFargoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:to="loc_fnf_WellsFargoMember_2a0033b2-9704-4e64-94c6-9d29422c0f27" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_GoldmanSachsMember_3be87e1d-b67f-4ecf-b17f-a4c3dd48bbe0" xlink:href="fnf-20200630.xsd#fnf_GoldmanSachsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_deb154a6-b5a2-4894-bd22-1d8ddc78ea90" xlink:to="loc_fnf_GoldmanSachsMember_3be87e1d-b67f-4ecf-b17f-a4c3dd48bbe0" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayable" xlink:type="simple" xlink:href="fnf-20200630.xsd#NotesPayable"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayable" xlink:type="extended" id="ide590bde79c14402889922e529ecb781_NotesPayable"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DebtTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#DebtTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DebtTables" xlink:type="extended" id="i29f3e540eab0402e903141a5fb592d21_DebtTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayableScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#NotesPayableScheduleofLongTermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayableScheduleofLongTermDebtDetails" xlink:type="extended" id="id4dc80c83ad44e8abf5ef540532e1c44_NotesPayableScheduleofLongTermDebtDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_bb17047e-669f-4a7b-b695-9f7622e9c695" 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_4b2a0bd5-3a21-4c1e-ad65-66ef98c7ca7f" 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_bb17047e-669f-4a7b-b695-9f7622e9c695" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_4b2a0bd5-3a21-4c1e-ad65-66ef98c7ca7f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_c0a56dd0-2000-4178-bbb6-f5edec2066e4" 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_bb17047e-669f-4a7b-b695-9f7622e9c695" xlink:to="loc_us-gaap_LongTermDebt_c0a56dd0-2000-4178-bbb6-f5edec2066e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_e4de32a2-b040-4696-9c70-07fb399af816" 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_bb17047e-669f-4a7b-b695-9f7622e9c695" xlink:to="loc_us-gaap_DebtInstrumentTable_e4de32a2-b040-4696-9c70-07fb399af816" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_a6ba8bb8-b8e4-4fb1-aac7-3e9595f190bf" 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_e4de32a2-b040-4696-9c70-07fb399af816" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_a6ba8bb8-b8e4-4fb1-aac7-3e9595f190bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a6ba8bb8-b8e4-4fb1-aac7-3e9595f190bf_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_a6ba8bb8-b8e4-4fb1-aac7-3e9595f190bf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a6ba8bb8-b8e4-4fb1-aac7-3e9595f190bf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ff6f9644-40cb-4266-be37-e2db0e2105be" 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_a6ba8bb8-b8e4-4fb1-aac7-3e9595f190bf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ff6f9644-40cb-4266-be37-e2db0e2105be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_f194ca50-ccf6-46d8-b243-3087f7b11cbb" 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_ff6f9644-40cb-4266-be37-e2db0e2105be" xlink:to="loc_us-gaap_UnsecuredDebtMember_f194ca50-ccf6-46d8-b243-3087f7b11cbb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_fbec6894-728a-454c-b2f3-e7981a00370d" 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_ff6f9644-40cb-4266-be37-e2db0e2105be" xlink:to="loc_us-gaap_LineOfCreditMember_fbec6894-728a-454c-b2f3-e7981a00370d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_15befff6-1e59-44f4-aed3-f65f66934157" 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_e4de32a2-b040-4696-9c70-07fb399af816" xlink:to="loc_us-gaap_DebtInstrumentAxis_15befff6-1e59-44f4-aed3-f65f66934157" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_15befff6-1e59-44f4-aed3-f65f66934157_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_15befff6-1e59-44f4-aed3-f65f66934157" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_15befff6-1e59-44f4-aed3-f65f66934157_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" 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_15befff6-1e59-44f4-aed3-f65f66934157" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_43448c65-1c10-4aa0-92f6-05814e5ef0a4" xlink:href="fnf-20200630.xsd#fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:to="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_43448c65-1c10-4aa0-92f6-05814e5ef0a4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_69d3ef4e-1986-4fe4-b451-352ebd4d701a" xlink:href="fnf-20200630.xsd#fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:to="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_69d3ef4e-1986-4fe4-b451-352ebd4d701a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member_2d90d587-c477-4da2-90f5-0757d48feb49" xlink:href="fnf-20200630.xsd#fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:to="loc_fnf_ThreePointFourZeroPercentUnsecuredNotesDueSeptember2022Member_2d90d587-c477-4da2-90f5-0757d48feb49" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanMember_5d915013-9d90-4b9d-94ff-735b9e7e4978" xlink:href="fnf-20200630.xsd#fnf_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:to="loc_fnf_TermLoanMember_5d915013-9d90-4b9d-94ff-735b9e7e4978" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RevolvingCreditFacilityDueApril2022Member_de08a5b2-e4db-437d-8747-23750f4c00f3" xlink:href="fnf-20200630.xsd#fnf_RevolvingCreditFacilityDueApril2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:to="loc_fnf_RevolvingCreditFacilityDueApril2022Member_de08a5b2-e4db-437d-8747-23750f4c00f3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A550FGNotesMember_4e0ab0a1-3567-475e-b9f6-a047e9ab15fa" xlink:href="fnf-20200630.xsd#fnf_A550FGNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:to="loc_fnf_A550FGNotesMember_4e0ab0a1-3567-475e-b9f6-a047e9ab15fa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGCreditFacilityMember_a3418538-53aa-44c4-a9cf-5d4fa8d8100b" xlink:href="fnf-20200630.xsd#fnf_FGCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1c7f3956-5ed9-4870-ac5d-fb313c1393c5" xlink:to="loc_fnf_FGCreditFacilityMember_a3418538-53aa-44c4-a9cf-5d4fa8d8100b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_affaa9a7-373c-4ab5-9e23-6a7d7c7fc3dc" 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_e4de32a2-b040-4696-9c70-07fb399af816" xlink:to="loc_us-gaap_CreditFacilityAxis_affaa9a7-373c-4ab5-9e23-6a7d7c7fc3dc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_affaa9a7-373c-4ab5-9e23-6a7d7c7fc3dc_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_affaa9a7-373c-4ab5-9e23-6a7d7c7fc3dc" xlink:to="loc_us-gaap_CreditFacilityDomain_affaa9a7-373c-4ab5-9e23-6a7d7c7fc3dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_c44dbfa3-9b91-43e3-ae99-ccbc0a3fe37b" 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_affaa9a7-373c-4ab5-9e23-6a7d7c7fc3dc" xlink:to="loc_us-gaap_CreditFacilityDomain_c44dbfa3-9b91-43e3-ae99-ccbc0a3fe37b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_6ea4a826-3623-46a1-a7d3-bae179f4a01f" 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_c44dbfa3-9b91-43e3-ae99-ccbc0a3fe37b" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_6ea4a826-3623-46a1-a7d3-bae179f4a01f" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayableLongTermDebtNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#NotesPayableLongTermDebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayableLongTermDebtNarrativeDetails" xlink:type="extended" id="if9cb8520e358462cb855d71c2d0fef42_NotesPayableLongTermDebtNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_157b9144-915e-4fac-b879-6c4ab5851440" 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_DebtInstrumentFaceAmount_16b31954-b9a0-4f65-87ec-751da1d8a72e" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_16b31954-b9a0-4f65-87ec-751da1d8a72e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_4ba07f0f-9b1c-4e9e-a79d-f6439e164441" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_4ba07f0f-9b1c-4e9e-a79d-f6439e164441" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_df483686-95e2-4f8d-8e61-2782ca825fbf" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_df483686-95e2-4f8d-8e61-2782ca825fbf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_1e25e755-61c3-4917-9b85-f640997093e0" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_1e25e755-61c3-4917-9b85-f640997093e0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2837170c-d9ff-48b6-8559-714a2d9e37ae" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2837170c-d9ff-48b6-8559-714a2d9e37ae" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_b79eab5e-8bb4-4397-a726-a31790387cec" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_b79eab5e-8bb4-4397-a726-a31790387cec" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes_42ede02c-4f25-4e1c-90b6-c1a0dbc6f6cc" xlink:href="fnf-20200630.xsd#fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes_42ede02c-4f25-4e1c-90b6-c1a0dbc6f6cc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_7bb129a8-d261-4365-9e29-15a7305cba6f" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt_7bb129a8-d261-4365-9e29-15a7305cba6f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_a9760326-1498-4b5f-b045-df13275bf910" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_a9760326-1498-4b5f-b045-df13275bf910" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DebtInstrumentFloorInterestRate_cbfa5e01-99ac-4064-90cf-5bc3a7d0348a" xlink:href="fnf-20200630.xsd#fnf_DebtInstrumentFloorInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_fnf_DebtInstrumentFloorInterestRate_cbfa5e01-99ac-4064-90cf-5bc3a7d0348a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_dd058600-df74-4ffc-8e57-d126e7f2269b" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_dd058600-df74-4ffc-8e57-d126e7f2269b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_8ec15958-c4ca-4075-9690-73712b3824a0" 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_157b9144-915e-4fac-b879-6c4ab5851440" xlink:to="loc_us-gaap_DebtInstrumentTable_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_0ed39ce6-fac3-4f79-939e-ea094852fd50" 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_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:to="loc_us-gaap_DebtInstrumentAxis_0ed39ce6-fac3-4f79-939e-ea094852fd50" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0ed39ce6-fac3-4f79-939e-ea094852fd50_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_0ed39ce6-fac3-4f79-939e-ea094852fd50" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0ed39ce6-fac3-4f79-939e-ea094852fd50_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_cddb347a-1caf-4bd0-bcf0-06be2c859249" 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_0ed39ce6-fac3-4f79-939e-ea094852fd50" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_cddb347a-1caf-4bd0-bcf0-06be2c859249" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanCreditAgreementMember_f017b3be-cc69-4713-863e-85b151ebf9ba" xlink:href="fnf-20200630.xsd#fnf_TermLoanCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_cddb347a-1caf-4bd0-bcf0-06be2c859249" xlink:to="loc_fnf_TermLoanCreditAgreementMember_f017b3be-cc69-4713-863e-85b151ebf9ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A340NotesDueJune152030Member_6dbff952-74f7-4480-a671-84c632178189" xlink:href="fnf-20200630.xsd#fnf_A340NotesDueJune152030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_cddb347a-1caf-4bd0-bcf0-06be2c859249" xlink:to="loc_fnf_A340NotesDueJune152030Member_6dbff952-74f7-4480-a671-84c632178189" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RevolvingCreditFacilityDueApril2022Member_517347a3-0ea2-4ada-972a-471b8ee5c1f3" xlink:href="fnf-20200630.xsd#fnf_RevolvingCreditFacilityDueApril2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_cddb347a-1caf-4bd0-bcf0-06be2c859249" xlink:to="loc_fnf_RevolvingCreditFacilityDueApril2022Member_517347a3-0ea2-4ada-972a-471b8ee5c1f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_A550FGSeniorNotesDue2025Member_8e4a7ad4-6f3b-4915-8011-92b5819e4f4b" xlink:href="fnf-20200630.xsd#fnf_A550FGSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_cddb347a-1caf-4bd0-bcf0-06be2c859249" xlink:to="loc_fnf_A550FGSeniorNotesDue2025Member_8e4a7ad4-6f3b-4915-8011-92b5819e4f4b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_13c4cb0b-a4fa-4e1e-83b2-bb405fb7f322" 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_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_13c4cb0b-a4fa-4e1e-83b2-bb405fb7f322" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_13c4cb0b-a4fa-4e1e-83b2-bb405fb7f322_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_13c4cb0b-a4fa-4e1e-83b2-bb405fb7f322" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_13c4cb0b-a4fa-4e1e-83b2-bb405fb7f322_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_76592b26-6b2a-4236-a2ed-433cb8f1aef6" 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_13c4cb0b-a4fa-4e1e-83b2-bb405fb7f322" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_76592b26-6b2a-4236-a2ed-433cb8f1aef6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_186eb8b6-a6e4-4c14-bae8-716759feeb76" 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_76592b26-6b2a-4236-a2ed-433cb8f1aef6" xlink:to="loc_us-gaap_UnsecuredDebtMember_186eb8b6-a6e4-4c14-bae8-716759feeb76" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TermLoanMember_7ca29ebc-a714-46d1-9fbc-874419b4bd25" xlink:href="fnf-20200630.xsd#fnf_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_76592b26-6b2a-4236-a2ed-433cb8f1aef6" xlink:to="loc_fnf_TermLoanMember_7ca29ebc-a714-46d1-9fbc-874419b4bd25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_6e4c7fc2-f5b3-4c15-acdd-7807be841a6b" 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_76592b26-6b2a-4236-a2ed-433cb8f1aef6" xlink:to="loc_us-gaap_LineOfCreditMember_6e4c7fc2-f5b3-4c15-acdd-7807be841a6b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_6a50281d-d219-44f5-a667-6d79d3326d88" 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_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:to="loc_us-gaap_VariableRateAxis_6a50281d-d219-44f5-a667-6d79d3326d88" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_6a50281d-d219-44f5-a667-6d79d3326d88_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_6a50281d-d219-44f5-a667-6d79d3326d88" xlink:to="loc_us-gaap_VariableRateDomain_6a50281d-d219-44f5-a667-6d79d3326d88_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_90946287-509c-43f7-844f-f42e55ff8c9a" 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_6a50281d-d219-44f5-a667-6d79d3326d88" xlink:to="loc_us-gaap_VariableRateDomain_90946287-509c-43f7-844f-f42e55ff8c9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_c314f5d1-79b7-4589-a7a3-d938c6230c13" 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_90946287-509c-43f7-844f-f42e55ff8c9a" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_c314f5d1-79b7-4589-a7a3-d938c6230c13" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e4f9f8e9-4a84-44dc-9897-3dd7d2eddea3" 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_90946287-509c-43f7-844f-f42e55ff8c9a" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e4f9f8e9-4a84-44dc-9897-3dd7d2eddea3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_4de97c89-ba69-4d21-867e-09a77e24821a" 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_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:to="loc_srt_RangeAxis_4de97c89-ba69-4d21-867e-09a77e24821a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4de97c89-ba69-4d21-867e-09a77e24821a_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_4de97c89-ba69-4d21-867e-09a77e24821a" xlink:to="loc_srt_RangeMember_4de97c89-ba69-4d21-867e-09a77e24821a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_0a74c8d6-54f0-4d9d-a288-10cda89c0c1f" 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_4de97c89-ba69-4d21-867e-09a77e24821a" xlink:to="loc_srt_RangeMember_0a74c8d6-54f0-4d9d-a288-10cda89c0c1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_2b47df13-6cb6-4753-89e1-a2ff843a6ac9" 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_0a74c8d6-54f0-4d9d-a288-10cda89c0c1f" xlink:to="loc_srt_MinimumMember_2b47df13-6cb6-4753-89e1-a2ff843a6ac9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_4b0ab7f2-dce9-444b-96c9-372ace627567" 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_0a74c8d6-54f0-4d9d-a288-10cda89c0c1f" xlink:to="loc_srt_MaximumMember_4b0ab7f2-dce9-444b-96c9-372ace627567" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_3fbaeea5-93c8-4d80-b008-fce73f434aa6" 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_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_3fbaeea5-93c8-4d80-b008-fce73f434aa6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3fbaeea5-93c8-4d80-b008-fce73f434aa6_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_3fbaeea5-93c8-4d80-b008-fce73f434aa6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3fbaeea5-93c8-4d80-b008-fce73f434aa6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee909980-7c42-4166-8cef-4e71cdb18cfa" 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_3fbaeea5-93c8-4d80-b008-fce73f434aa6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee909980-7c42-4166-8cef-4e71cdb18cfa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGLHoldingsMember_4bc76ca1-ab24-4e80-9ffd-3ce386ee94e0" xlink:href="fnf-20200630.xsd#fnf_FGLHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee909980-7c42-4166-8cef-4e71cdb18cfa" xlink:to="loc_fnf_FGLHoldingsMember_4bc76ca1-ab24-4e80-9ffd-3ce386ee94e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_62e17e52-7d77-4619-a04e-e44f4df42fee" 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_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:to="loc_us-gaap_CreditFacilityAxis_62e17e52-7d77-4619-a04e-e44f4df42fee" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_62e17e52-7d77-4619-a04e-e44f4df42fee_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_62e17e52-7d77-4619-a04e-e44f4df42fee" xlink:to="loc_us-gaap_CreditFacilityDomain_62e17e52-7d77-4619-a04e-e44f4df42fee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_715e700e-7bc9-4a35-8dbb-84ad118fe90a" 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_62e17e52-7d77-4619-a04e-e44f4df42fee" xlink:to="loc_us-gaap_CreditFacilityDomain_715e700e-7bc9-4a35-8dbb-84ad118fe90a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_b8e9939a-6b34-42a3-887a-b202f7639f11" 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_715e700e-7bc9-4a35-8dbb-84ad118fe90a" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_b8e9939a-6b34-42a3-887a-b202f7639f11" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_9d05f4af-b982-4eca-8080-e99801377644" 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_DebtInstrumentTable_8ec15958-c4ca-4075-9690-73712b3824a0" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_9d05f4af-b982-4eca-8080-e99801377644" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_9d05f4af-b982-4eca-8080-e99801377644_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_9d05f4af-b982-4eca-8080-e99801377644" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_9d05f4af-b982-4eca-8080-e99801377644_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_34ced71b-de9f-4b23-852e-f2b32c3fc2bf" 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_9d05f4af-b982-4eca-8080-e99801377644" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_34ced71b-de9f-4b23-852e-f2b32c3fc2bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_49008028-97bd-44ed-90ee-2158f6c5dbab" 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_34ced71b-de9f-4b23-852e-f2b32c3fc2bf" xlink:to="loc_us-gaap_SubsequentEventMember_49008028-97bd-44ed-90ee-2158f6c5dbab" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayable450NotesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#NotesPayable450NotesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayable450NotesDetails" xlink:type="extended" id="i8a624d64123941b1a577cfa60febc998_NotesPayable450NotesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_8aaa7acb-2eb6-4824-8d90-d257904cc4cb" 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_DebtInstrumentFaceAmount_496852ce-759a-4b51-bb20-81025deff935" 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_8aaa7acb-2eb6-4824-8d90-d257904cc4cb" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_496852ce-759a-4b51-bb20-81025deff935" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3fa9b399-bea7-4874-a363-5aed1d900565" 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_8aaa7acb-2eb6-4824-8d90-d257904cc4cb" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3fa9b399-bea7-4874-a363-5aed1d900565" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes_ec3016ff-e634-48b2-9305-6159553c0cfa" xlink:href="fnf-20200630.xsd#fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8aaa7acb-2eb6-4824-8d90-d257904cc4cb" xlink:to="loc_fnf_PriceAsPercentOfParOnOfferingOfUnsecuredNotes_ec3016ff-e634-48b2-9305-6159553c0cfa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_d50b01c3-6448-4dab-aaf5-06b11c5d977a" 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_8aaa7acb-2eb6-4824-8d90-d257904cc4cb" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_d50b01c3-6448-4dab-aaf5-06b11c5d977a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_369f2f5c-94da-440f-8e53-277c7b54ceb3" 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_8aaa7acb-2eb6-4824-8d90-d257904cc4cb" xlink:to="loc_us-gaap_DebtInstrumentTable_369f2f5c-94da-440f-8e53-277c7b54ceb3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_da4170a7-3ece-4fd6-844b-6391d587da39" 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_369f2f5c-94da-440f-8e53-277c7b54ceb3" xlink:to="loc_us-gaap_DebtInstrumentAxis_da4170a7-3ece-4fd6-844b-6391d587da39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_da4170a7-3ece-4fd6-844b-6391d587da39_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_da4170a7-3ece-4fd6-844b-6391d587da39" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_da4170a7-3ece-4fd6-844b-6391d587da39_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_49434dc5-09d9-40d5-94f3-6e233c650e01" 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_da4170a7-3ece-4fd6-844b-6391d587da39" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_49434dc5-09d9-40d5-94f3-6e233c650e01" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_1b02365a-b076-48a2-9814-36b77173d9eb" xlink:href="fnf-20200630.xsd#fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_49434dc5-09d9-40d5-94f3-6e233c650e01" xlink:to="loc_fnf_FourPointFiveZeroPercentUnsecuredNotesDueAugust2028Member_1b02365a-b076-48a2-9814-36b77173d9eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8396f53e-4783-432d-ac4d-054f21dd20b4" 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_369f2f5c-94da-440f-8e53-277c7b54ceb3" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_8396f53e-4783-432d-ac4d-054f21dd20b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8396f53e-4783-432d-ac4d-054f21dd20b4_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_8396f53e-4783-432d-ac4d-054f21dd20b4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8396f53e-4783-432d-ac4d-054f21dd20b4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_5b2b8878-9e4c-481b-84db-4a513a0d9597" 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_8396f53e-4783-432d-ac4d-054f21dd20b4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_5b2b8878-9e4c-481b-84db-4a513a0d9597" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_273b2051-a478-401d-9fb3-1fb9121b423c" 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_5b2b8878-9e4c-481b-84db-4a513a0d9597" xlink:to="loc_us-gaap_UnsecuredDebtMember_273b2051-a478-401d-9fb3-1fb9121b423c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayableExistingCreditAgreementDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#NotesPayableExistingCreditAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayableExistingCreditAgreementDetails" xlink:type="extended" id="i19dc909a36fc4a87950697f052ce689e_NotesPayableExistingCreditAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_6433904c-0f04-4e7e-8964-32eef6f36f5e" 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_LineOfCreditFacilityMaximumBorrowingCapacity_9990af4c-342f-4d63-988a-f24dbf96c8d0" 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_6433904c-0f04-4e7e-8964-32eef6f36f5e" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_9990af4c-342f-4d63-988a-f24dbf96c8d0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_12309862-6f1e-4276-a62f-2c401f6fe388" 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_6433904c-0f04-4e7e-8964-32eef6f36f5e" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_12309862-6f1e-4276-a62f-2c401f6fe388" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_053d0d1e-5cb2-49a7-b1a1-8645bb6549de" 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_6433904c-0f04-4e7e-8964-32eef6f36f5e" xlink:to="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_053d0d1e-5cb2-49a7-b1a1-8645bb6549de" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_b507a423-2140-4ee1-a283-9810c50215ab" 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_6433904c-0f04-4e7e-8964-32eef6f36f5e" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_b507a423-2140-4ee1-a283-9810c50215ab" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_f636ca8c-1eb0-4c71-b0ed-c76f73a5d77d" 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_6433904c-0f04-4e7e-8964-32eef6f36f5e" xlink:to="loc_us-gaap_DebtInstrumentTable_f636ca8c-1eb0-4c71-b0ed-c76f73a5d77d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_0b96a7f5-c142-47d1-bf87-4885a926391a" 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_f636ca8c-1eb0-4c71-b0ed-c76f73a5d77d" xlink:to="loc_us-gaap_CreditFacilityAxis_0b96a7f5-c142-47d1-bf87-4885a926391a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_0b96a7f5-c142-47d1-bf87-4885a926391a_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_0b96a7f5-c142-47d1-bf87-4885a926391a" xlink:to="loc_us-gaap_CreditFacilityDomain_0b96a7f5-c142-47d1-bf87-4885a926391a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_afb7446d-1a1b-4dab-bf86-2d20ec68ba44" 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_0b96a7f5-c142-47d1-bf87-4885a926391a" xlink:to="loc_us-gaap_CreditFacilityDomain_afb7446d-1a1b-4dab-bf86-2d20ec68ba44" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_4be35ea6-89d2-4bb6-b028-605394933c9e" 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_afb7446d-1a1b-4dab-bf86-2d20ec68ba44" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_4be35ea6-89d2-4bb6-b028-605394933c9e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_30214cfd-c1e9-4248-831d-fe50b0c63937" 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_f636ca8c-1eb0-4c71-b0ed-c76f73a5d77d" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_30214cfd-c1e9-4248-831d-fe50b0c63937" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_30214cfd-c1e9-4248-831d-fe50b0c63937_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_30214cfd-c1e9-4248-831d-fe50b0c63937" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_30214cfd-c1e9-4248-831d-fe50b0c63937_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_9a1cb942-7d52-46c8-afc2-dc12cc7cfff7" 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_30214cfd-c1e9-4248-831d-fe50b0c63937" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_9a1cb942-7d52-46c8-afc2-dc12cc7cfff7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_b96e4161-8cd2-4cbc-8871-ee3a02ecb013" 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_9a1cb942-7d52-46c8-afc2-dc12cc7cfff7" xlink:to="loc_us-gaap_LineOfCreditMember_b96e4161-8cd2-4cbc-8871-ee3a02ecb013" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_6160c2a0-04ba-4fde-a3a8-a15323a38aa2" 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_f636ca8c-1eb0-4c71-b0ed-c76f73a5d77d" xlink:to="loc_us-gaap_DebtInstrumentAxis_6160c2a0-04ba-4fde-a3a8-a15323a38aa2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_6160c2a0-04ba-4fde-a3a8-a15323a38aa2_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_6160c2a0-04ba-4fde-a3a8-a15323a38aa2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_6160c2a0-04ba-4fde-a3a8-a15323a38aa2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_358d7bb4-912b-4028-8e85-5384f2123374" 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_6160c2a0-04ba-4fde-a3a8-a15323a38aa2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_358d7bb4-912b-4028-8e85-5384f2123374" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RevolvingCreditFacilityDueApril2022Member_0b05a3da-cec2-4f9a-afd8-6b041194c62b" xlink:href="fnf-20200630.xsd#fnf_RevolvingCreditFacilityDueApril2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_358d7bb4-912b-4028-8e85-5384f2123374" xlink:to="loc_fnf_RevolvingCreditFacilityDueApril2022Member_0b05a3da-cec2-4f9a-afd8-6b041194c62b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayable550NotesDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#NotesPayable550NotesDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayable550NotesDetails" xlink:type="extended" id="ica5689b59e994b4b9f80cdff70316a7e_NotesPayable550NotesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_a578c1d3-3dc6-47d3-953b-7772a38e2c85" 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_DebtInstrumentFaceAmount_0f0a2ad5-a3f6-40c3-b3a8-569c21c85d2f" 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_a578c1d3-3dc6-47d3-953b-7772a38e2c85" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_0f0a2ad5-a3f6-40c3-b3a8-569c21c85d2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_c0c0f864-da61-4988-8dfe-e0c95a6a4278" 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_a578c1d3-3dc6-47d3-953b-7772a38e2c85" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_c0c0f864-da61-4988-8dfe-e0c95a6a4278" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_34246208-8d05-46db-93f1-19dae507115d" 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_a578c1d3-3dc6-47d3-953b-7772a38e2c85" xlink:to="loc_us-gaap_DebtInstrumentTable_34246208-8d05-46db-93f1-19dae507115d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_6578fb1d-a925-48ec-a4f1-6a529f1c6faa" 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_34246208-8d05-46db-93f1-19dae507115d" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_6578fb1d-a925-48ec-a4f1-6a529f1c6faa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6578fb1d-a925-48ec-a4f1-6a529f1c6faa_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_6578fb1d-a925-48ec-a4f1-6a529f1c6faa" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6578fb1d-a925-48ec-a4f1-6a529f1c6faa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4a756891-23c7-4466-a86e-48f79b6808b2" 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_6578fb1d-a925-48ec-a4f1-6a529f1c6faa" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4a756891-23c7-4466-a86e-48f79b6808b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_926110cf-7da2-4f22-99f7-38ee63087193" 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_4a756891-23c7-4466-a86e-48f79b6808b2" xlink:to="loc_us-gaap_UnsecuredDebtMember_926110cf-7da2-4f22-99f7-38ee63087193" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_95c57988-bd19-4513-b2df-3ecf5c1f6b6d" 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_34246208-8d05-46db-93f1-19dae507115d" xlink:to="loc_us-gaap_DebtInstrumentAxis_95c57988-bd19-4513-b2df-3ecf5c1f6b6d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_95c57988-bd19-4513-b2df-3ecf5c1f6b6d_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_95c57988-bd19-4513-b2df-3ecf5c1f6b6d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_95c57988-bd19-4513-b2df-3ecf5c1f6b6d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_b9a9ed96-1189-4384-8c5c-353aa9143b62" 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_95c57988-bd19-4513-b2df-3ecf5c1f6b6d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_b9a9ed96-1189-4384-8c5c-353aa9143b62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_fbd321ab-cb7c-4443-934e-b7b47996ff2c" xlink:href="fnf-20200630.xsd#fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b9a9ed96-1189-4384-8c5c-353aa9143b62" xlink:to="loc_fnf_FivePointFiveZeroPercentUnsecuredNotesDueSeptember2022Member_fbd321ab-cb7c-4443-934e-b7b47996ff2c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/NotesPayablePrincipalMaturitiesofNotesPayableDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#NotesPayablePrincipalMaturitiesofNotesPayableDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/NotesPayablePrincipalMaturitiesofNotesPayableDetails" xlink:type="extended" id="i369002daffb84f2384715720c476e2ee_NotesPayablePrincipalMaturitiesofNotesPayableDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingencies" xlink:type="simple" xlink:href="fnf-20200630.xsd#CommitmentsandContingencies"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingencies" xlink:type="extended" id="i4460e41c30d7441bb56cb537dc5c5e10_CommitmentsandContingencies"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingenciesTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#CommitmentsandContingenciesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingenciesTables" xlink:type="extended" id="i7a7b12e062684bbb8527fc9bb810c251_CommitmentsandContingenciesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#CommitmentsandContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="extended" id="i82eebcace02d4a4a9ba07c1e81fc6dea_CommitmentsandContingenciesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_a67c2be6-8cff-405d-8f1f-b510eb95684c" 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_475ddd09-7240-46c2-a17f-86e82c839c03" 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_a67c2be6-8cff-405d-8f1f-b510eb95684c" xlink:to="loc_us-gaap_LitigationReserve_475ddd09-7240-46c2-a17f-86e82c839c03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LossContingencyMultiplierAppliedToDamages_264b43ad-ab00-4372-8b7d-3274d5c104f4" xlink:href="fnf-20200630.xsd#fnf_LossContingencyMultiplierAppliedToDamages"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_a67c2be6-8cff-405d-8f1f-b510eb95684c" xlink:to="loc_fnf_LossContingencyMultiplierAppliedToDamages_264b43ad-ab00-4372-8b7d-3274d5c104f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_f96c6d37-ba98-44dd-98fc-0c814382c7fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_a67c2be6-8cff-405d-8f1f-b510eb95684c" xlink:to="loc_us-gaap_SharesOutstanding_f96c6d37-ba98-44dd-98fc-0c814382c7fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_63a2be00-ce98-4b99-b8b2-183dfa95d4d8" 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_a67c2be6-8cff-405d-8f1f-b510eb95684c" xlink:to="loc_us-gaap_OtherCommitmentsTable_63a2be00-ce98-4b99-b8b2-183dfa95d4d8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_22195043-f792-45cf-b072-5d3eb8e54641" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_63a2be00-ce98-4b99-b8b2-183dfa95d4d8" xlink:to="loc_dei_LegalEntityAxis_22195043-f792-45cf-b072-5d3eb8e54641" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_22195043-f792-45cf-b072-5d3eb8e54641_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_22195043-f792-45cf-b072-5d3eb8e54641" xlink:to="loc_dei_EntityDomain_22195043-f792-45cf-b072-5d3eb8e54641_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5c1485a1-f152-4fff-983d-58b00a21cd1f" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_22195043-f792-45cf-b072-5d3eb8e54641" xlink:to="loc_dei_EntityDomain_5c1485a1-f152-4fff-983d-58b00a21cd1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_8c4e32b8-d0d8-4093-a308-832f3915e634" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5c1485a1-f152-4fff-983d-58b00a21cd1f" xlink:to="loc_fnf_FGMember_8c4e32b8-d0d8-4093-a308-832f3915e634" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_ae646fc2-1393-4d65-80bf-14116233c4d0" 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_OtherCommitmentsTable_63a2be00-ce98-4b99-b8b2-183dfa95d4d8" xlink:to="loc_srt_CounterpartyNameAxis_ae646fc2-1393-4d65-80bf-14116233c4d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ae646fc2-1393-4d65-80bf-14116233c4d0_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_ae646fc2-1393-4d65-80bf-14116233c4d0" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ae646fc2-1393-4d65-80bf-14116233c4d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_94e69a03-61c9-42d4-aab6-948f73e7f40d" 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_ae646fc2-1393-4d65-80bf-14116233c4d0" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_94e69a03-61c9-42d4-aab6-948f73e7f40d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_KingstownDissentersMember_820bc3ec-8c7b-4ed6-a14a-ad5842e07326" xlink:href="fnf-20200630.xsd#fnf_KingstownDissentersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_94e69a03-61c9-42d4-aab6-948f73e7f40d" xlink:to="loc_fnf_KingstownDissentersMember_820bc3ec-8c7b-4ed6-a14a-ad5842e07326" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/CommitmentsandContingenciesScheduleofInvestmentCommitmentsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#CommitmentsandContingenciesScheduleofInvestmentCommitmentsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/CommitmentsandContingenciesScheduleofInvestmentCommitmentsDetails" xlink:type="extended" id="i2cb45f5e067b487589f7665b227a2bc8_CommitmentsandContingenciesScheduleofInvestmentCommitmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_3ba65925-1bd8-4cb0-ac22-fdb411b17f54" 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_0d65930d-c1df-495c-8fdd-27b16bc6115d" 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_3ba65925-1bd8-4cb0-ac22-fdb411b17f54" xlink:to="loc_us-gaap_OtherCommitment_0d65930d-c1df-495c-8fdd-27b16bc6115d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_70a72775-4954-4ed0-9f3d-55ef63c80433" 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_3ba65925-1bd8-4cb0-ac22-fdb411b17f54" xlink:to="loc_us-gaap_OtherCommitmentsTable_70a72775-4954-4ed0-9f3d-55ef63c80433" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_d97f0a18-af7d-4aef-a602-4d1cf570be17" 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_70a72775-4954-4ed0-9f3d-55ef63c80433" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_d97f0a18-af7d-4aef-a602-4d1cf570be17" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d97f0a18-af7d-4aef-a602-4d1cf570be17_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_d97f0a18-af7d-4aef-a602-4d1cf570be17" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d97f0a18-af7d-4aef-a602-4d1cf570be17_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d96164e4-1c9c-45c0-81b4-a94c5199b0ed" 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_d97f0a18-af7d-4aef-a602-4d1cf570be17" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d96164e4-1c9c-45c0-81b4-a94c5199b0ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsMember_ed043564-a213-466b-8f94-b4b0e36fa2ac" 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_d96164e4-1c9c-45c0-81b4-a94c5199b0ed" xlink:to="loc_us-gaap_EquityMethodInvestmentsMember_ed043564-a213-466b-8f94-b4b0e36fa2ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesMember_4a4bea75-b0bf-43e1-af9a-340171f1c54d" 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_d96164e4-1c9c-45c0-81b4-a94c5199b0ed" xlink:to="loc_us-gaap_EquitySecuritiesMember_4a4bea75-b0bf-43e1-af9a-340171f1c54d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedMaturitiesAvailableForSaleMember_5bb17ee8-f051-4e7f-8b88-1d374ba59515" xlink:href="fnf-20200630.xsd#fnf_FixedMaturitiesAvailableForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_d96164e4-1c9c-45c0-81b4-a94c5199b0ed" xlink:to="loc_fnf_FixedMaturitiesAvailableForSaleMember_5bb17ee8-f051-4e7f-8b88-1d374ba59515" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMember_5ab17a0f-042c-4449-b650-ca5fc2853080" 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_d96164e4-1c9c-45c0-81b4-a94c5199b0ed" xlink:to="loc_us-gaap_OtherAssetsMember_5ab17a0f-042c-4449-b650-ca5fc2853080" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResidentialMortgageMember_aee5ccd8-b030-4063-810c-4f7bc09ff7ba" 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_d96164e4-1c9c-45c0-81b4-a94c5199b0ed" xlink:to="loc_us-gaap_ResidentialMortgageMember_aee5ccd8-b030-4063-810c-4f7bc09ff7ba" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_179da7ba-457a-469a-8edd-fa57b938c827" 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_70a72775-4954-4ed0-9f3d-55ef63c80433" xlink:to="loc_us-gaap_OtherCommitmentsAxis_179da7ba-457a-469a-8edd-fa57b938c827" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_179da7ba-457a-469a-8edd-fa57b938c827_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_179da7ba-457a-469a-8edd-fa57b938c827" xlink:to="loc_us-gaap_OtherCommitmentsDomain_179da7ba-457a-469a-8edd-fa57b938c827_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_b6d53d96-d986-4497-bb77-034c96d945d8" 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_179da7ba-457a-469a-8edd-fa57b938c827" xlink:to="loc_us-gaap_OtherCommitmentsDomain_b6d53d96-d986-4497-bb77-034c96d945d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CommitmenttoInvestMember_7914e8a8-0155-433b-96d4-586aa18173f8" xlink:href="fnf-20200630.xsd#fnf_CommitmenttoInvestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_b6d53d96-d986-4497-bb77-034c96d945d8" xlink:to="loc_fnf_CommitmenttoInvestMember_7914e8a8-0155-433b-96d4-586aa18173f8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Dividends" xlink:type="simple" xlink:href="fnf-20200630.xsd#Dividends"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Dividends" xlink:type="extended" id="i672ec40c6ba64c08b424fb97ea795503_Dividends"/>
  <link:roleRef roleURI="http://www.fnf.com/role/DividendsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#DividendsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DividendsDetails" xlink:type="extended" id="ia7d8686b1ecb48c9b17eec073ecbefa2_DividendsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_552d59a9-fbb4-4af8-a2de-05b60faf9a9f" 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_ede9ad63-95d6-4a51-ae5b-a67065608028" 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_552d59a9-fbb4-4af8-a2de-05b60faf9a9f" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_ede9ad63-95d6-4a51-ae5b-a67065608028" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_191e29a2-87cc-4a20-8068-05966cb14558" 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_552d59a9-fbb4-4af8-a2de-05b60faf9a9f" xlink:to="loc_us-gaap_SubsequentEventTable_191e29a2-87cc-4a20-8068-05966cb14558" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_8c408881-5fc1-4e5f-854a-fe0081838071" 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_191e29a2-87cc-4a20-8068-05966cb14558" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_8c408881-5fc1-4e5f-854a-fe0081838071" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_8c408881-5fc1-4e5f-854a-fe0081838071_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_8c408881-5fc1-4e5f-854a-fe0081838071" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_8c408881-5fc1-4e5f-854a-fe0081838071_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_099c7691-7001-4146-b654-c34bbf6e73f4" 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_8c408881-5fc1-4e5f-854a-fe0081838071" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_099c7691-7001-4146-b654-c34bbf6e73f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_f1a90335-f501-46e5-9293-5dff57fd6592" 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_099c7691-7001-4146-b654-c34bbf6e73f4" xlink:to="loc_us-gaap_SubsequentEventMember_f1a90335-f501-46e5-9293-5dff57fd6592" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SegmentInformation" xlink:type="simple" xlink:href="fnf-20200630.xsd#SegmentInformation"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SegmentInformation" xlink:type="extended" id="i3fe074b68d0c4f7a92c7148a0fd091c5_SegmentInformation"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SegmentInformationTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#SegmentInformationTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SegmentInformationTables" xlink:type="extended" id="ifaac36115d804d9dad36c3b9307741f4_SegmentInformationTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SegmentInformationScheduleofSegmentReportingInformationDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#SegmentInformationScheduleofSegmentReportingInformationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SegmentInformationScheduleofSegmentReportingInformationDetails" xlink:type="extended" id="i08bb5ab231e14586a9cc7694eee38c8d_SegmentInformationScheduleofSegmentReportingInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_3695a4cf-ad59-49c3-90e2-6a911405fc10" 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_3a08ac0e-b189-4387-8520-9e048ae87bc0" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_PremiumsWrittenNet_3a08ac0e-b189-4387-8520-9e048ae87bc0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceCommissionsAndFees_5d323e73-8198-4604-9e5c-442bfd783788" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_InsuranceCommissionsAndFees_5d323e73-8198-4604-9e5c-442bfd783788" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceServicesRevenue_1ca02058-355d-4710-b733-7a815dde636a" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_InsuranceServicesRevenue_1ca02058-355d-4710-b733-7a815dde636a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_NetInvestmentIncomeAndGainLossOnInvestments_13b79187-319b-44ed-bc4b-ec52e5965d2b" xlink:href="fnf-20200630.xsd#fnf_NetInvestmentIncomeAndGainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_fnf_NetInvestmentIncomeAndGainLossOnInvestments_13b79187-319b-44ed-bc4b-ec52e5965d2b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_cd350a99-3fe1-4ea5-acee-4f8159b87ab6" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_Revenues_cd350a99-3fe1-4ea5-acee-4f8159b87ab6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_8d86bfcd-f817-4dd9-a670-26bdd9024a5c" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_DepreciationAndAmortization_8d86bfcd-f817-4dd9-a670-26bdd9024a5c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_9e8efe3f-9427-4d9f-a8d4-e819c0174cd8" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_InterestExpense_9e8efe3f-9427-4d9f-a8d4-e819c0174cd8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_3d68a73f-65df-4de6-9b2b-9bff016ff88d" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_3d68a73f-65df-4de6-9b2b-9bff016ff88d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_670f7723-ff5f-4842-9ebf-76bd9ff83bd1" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_670f7723-ff5f-4842-9ebf-76bd9ff83bd1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_IncomeLossFromContinuingOperationsBeforeMinorityInterestAndIncomeLossOnEquityMethodInvestmentsNetOfIncomeTax_d0454eba-d22d-4607-a05a-f9211f431fac" xlink:href="fnf-20200630.xsd#fnf_IncomeLossFromContinuingOperationsBeforeMinorityInterestAndIncomeLossOnEquityMethodInvestmentsNetOfIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_fnf_IncomeLossFromContinuingOperationsBeforeMinorityInterestAndIncomeLossOnEquityMethodInvestmentsNetOfIncomeTax_d0454eba-d22d-4607-a05a-f9211f431fac" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_f16494bc-6e70-43da-8890-94663b03c422" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_f16494bc-6e70-43da-8890-94663b03c422" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_ca389b14-8817-4a04-95a1-d8aa580d5cb8" 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_SegmentReportingInformationLineItems_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_ProfitLoss_ca389b14-8817-4a04-95a1-d8aa580d5cb8" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_6b879be0-54d9-4453-9b9c-c1819b0a8467" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_Assets_6b879be0-54d9-4453-9b9c-c1819b0a8467" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_20ba83db-777c-453f-bd00-42829021e9a9" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_Goodwill_20ba83db-777c-453f-bd00-42829021e9a9" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_0ef2fba8-6cbe-4722-97ef-7e9fd2e5f154" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_0ef2fba8-6cbe-4722-97ef-7e9fd2e5f154" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_9c1cd3e0-bef1-4897-a915-49411af298cd" 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_3695a4cf-ad59-49c3-90e2-6a911405fc10" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_9c1cd3e0-bef1-4897-a915-49411af298cd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_3463e4ba-3ebe-48cf-8b6b-f985768e6661" 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_ScheduleOfSegmentReportingInformationBySegmentTable_9c1cd3e0-bef1-4897-a915-49411af298cd" xlink:to="loc_srt_ConsolidationItemsAxis_3463e4ba-3ebe-48cf-8b6b-f985768e6661" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_3463e4ba-3ebe-48cf-8b6b-f985768e6661_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_3463e4ba-3ebe-48cf-8b6b-f985768e6661" xlink:to="loc_srt_ConsolidationItemsDomain_3463e4ba-3ebe-48cf-8b6b-f985768e6661_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_1d87706f-08b7-489e-987c-c5684c28a25a" 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_3463e4ba-3ebe-48cf-8b6b-f985768e6661" xlink:to="loc_srt_ConsolidationItemsDomain_1d87706f-08b7-489e-987c-c5684c28a25a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_2279160d-de57-411f-8d6d-be637d839ea5" 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_1d87706f-08b7-489e-987c-c5684c28a25a" xlink:to="loc_us-gaap_OperatingSegmentsMember_2279160d-de57-411f-8d6d-be637d839ea5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_36f48f1e-3ead-4b9e-b0ba-61b9d10fa586" 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_9c1cd3e0-bef1-4897-a915-49411af298cd" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_36f48f1e-3ead-4b9e-b0ba-61b9d10fa586" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_36f48f1e-3ead-4b9e-b0ba-61b9d10fa586_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_36f48f1e-3ead-4b9e-b0ba-61b9d10fa586" xlink:to="loc_us-gaap_SegmentDomain_36f48f1e-3ead-4b9e-b0ba-61b9d10fa586_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_a193225b-d8d6-497b-910a-30485123a346" 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_36f48f1e-3ead-4b9e-b0ba-61b9d10fa586" xlink:to="loc_us-gaap_SegmentDomain_a193225b-d8d6-497b-910a-30485123a346" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_fa895007-a82f-496a-b849-363dda843edf" xlink:href="fnf-20200630.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a193225b-d8d6-497b-910a-30485123a346" xlink:to="loc_fnf_TitleSegmentMember_fa895007-a82f-496a-b849-363dda843edf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_d486ec95-abe7-4a77-b292-3426fc345067" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a193225b-d8d6-497b-910a-30485123a346" xlink:to="loc_fnf_FGMember_d486ec95-abe7-4a77-b292-3426fc345067" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CorporateAndReconcilingItemsMember_484bf1dc-d386-4dd1-b8f4-b84591c587f6" xlink:href="fnf-20200630.xsd#fnf_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a193225b-d8d6-497b-910a-30485123a346" xlink:to="loc_fnf_CorporateAndReconcilingItemsMember_484bf1dc-d386-4dd1-b8f4-b84591c587f6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/SupplementalCashFlowInformation" xlink:type="simple" xlink:href="fnf-20200630.xsd#SupplementalCashFlowInformation"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SupplementalCashFlowInformation" xlink:type="extended" id="i393d6a6c438e42e39b410727f84603eb_SupplementalCashFlowInformation"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SupplementalCashFlowInformationTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#SupplementalCashFlowInformationTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SupplementalCashFlowInformationTables" xlink:type="extended" id="i632d5aa992e24a17b5cd690b9febf07e_SupplementalCashFlowInformationTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/SupplementalCashFlowInformationDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#SupplementalCashFlowInformationDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/SupplementalCashFlowInformationDetails" xlink:type="extended" id="i98024589235043ab8f58485b3de8785c_SupplementalCashFlowInformationDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognition" xlink:type="simple" xlink:href="fnf-20200630.xsd#RevenueRecognition"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognition" xlink:type="extended" id="i105d2f3eb86f44599f80a87fadc03823_RevenueRecognition"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognitionTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#RevenueRecognitionTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognitionTables" xlink:type="extended" id="i3c4ec08f7a6c47ccbe81a0b9e9bdd395_RevenueRecognitionTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#RevenueRecognitionDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="extended" id="i59ed2528d3c3447087ed5899216b4ad3_RevenueRecognitionDisaggregationofRevenueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_04ae1f95-de10-4f24-9a4b-08c794eccd3f" 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_82fbcbbf-886a-4718-9775-6191e0ea1166" 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_04ae1f95-de10-4f24-9a4b-08c794eccd3f" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_82fbcbbf-886a-4718-9775-6191e0ea1166" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_e9e9601b-60ec-4abd-b314-dcf402e76ff0" 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_04ae1f95-de10-4f24-9a4b-08c794eccd3f" xlink:to="loc_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_e9e9601b-60ec-4abd-b314-dcf402e76ff0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentIncome_da3ba049-ce99-41b5-a3c8-e411ee9f3290" 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_04ae1f95-de10-4f24-9a4b-08c794eccd3f" xlink:to="loc_us-gaap_NetInvestmentIncome_da3ba049-ce99-41b5-a3c8-e411ee9f3290" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_ac0de0c7-7441-4c3f-bce9-7c86c9ec54be" 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_04ae1f95-de10-4f24-9a4b-08c794eccd3f" xlink:to="loc_us-gaap_GainLossOnInvestments_ac0de0c7-7441-4c3f-bce9-7c86c9ec54be" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_ec8c37fd-c448-47b7-8839-777841bbfae8" 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_04ae1f95-de10-4f24-9a4b-08c794eccd3f" xlink:to="loc_us-gaap_Revenues_ec8c37fd-c448-47b7-8839-777841bbfae8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_6ef5b7de-07f6-4a17-9705-5310562d1b03" 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_04ae1f95-de10-4f24-9a4b-08c794eccd3f" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_6ef5b7de-07f6-4a17-9705-5310562d1b03" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_66ddb064-ab0a-456a-be45-bf0fe5739f34" 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_6ef5b7de-07f6-4a17-9705-5310562d1b03" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_66ddb064-ab0a-456a-be45-bf0fe5739f34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_66ddb064-ab0a-456a-be45-bf0fe5739f34_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_66ddb064-ab0a-456a-be45-bf0fe5739f34" xlink:to="loc_us-gaap_SegmentDomain_66ddb064-ab0a-456a-be45-bf0fe5739f34_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_8c8feced-ee06-4ec8-963e-5e9b7d7eeac4" 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_66ddb064-ab0a-456a-be45-bf0fe5739f34" xlink:to="loc_us-gaap_SegmentDomain_8c8feced-ee06-4ec8-963e-5e9b7d7eeac4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_70297465-be90-42b6-ac73-8bed13a9f880" xlink:href="fnf-20200630.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8c8feced-ee06-4ec8-963e-5e9b7d7eeac4" xlink:to="loc_fnf_TitleSegmentMember_70297465-be90-42b6-ac73-8bed13a9f880" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGSegmentMember_e51b0599-0f1a-4061-86a4-adef092c60cb" xlink:href="fnf-20200630.xsd#fnf_FGSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8c8feced-ee06-4ec8-963e-5e9b7d7eeac4" xlink:to="loc_fnf_FGSegmentMember_e51b0599-0f1a-4061-86a4-adef092c60cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CorporateAndReconcilingItemsMember_5d21240d-31eb-4220-a1d5-2443ddf07dd8" xlink:href="fnf-20200630.xsd#fnf_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8c8feced-ee06-4ec8-963e-5e9b7d7eeac4" xlink:to="loc_fnf_CorporateAndReconcilingItemsMember_5d21240d-31eb-4220-a1d5-2443ddf07dd8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_e062231b-ddda-4a0f-9a35-1f2ef9292854" 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_6ef5b7de-07f6-4a17-9705-5310562d1b03" xlink:to="loc_srt_ProductOrServiceAxis_e062231b-ddda-4a0f-9a35-1f2ef9292854" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e062231b-ddda-4a0f-9a35-1f2ef9292854_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_e062231b-ddda-4a0f-9a35-1f2ef9292854" xlink:to="loc_srt_ProductsAndServicesDomain_e062231b-ddda-4a0f-9a35-1f2ef9292854_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" 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_e062231b-ddda-4a0f-9a35-1f2ef9292854" xlink:to="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsDirectTitleInsurancePremiumsMember_f7b92911-90c3-47bc-b4c5-e16ad8290f28" xlink:href="fnf-20200630.xsd#fnf_InsuranceContractsDirectTitleInsurancePremiumsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_InsuranceContractsDirectTitleInsurancePremiumsMember_f7b92911-90c3-47bc-b4c5-e16ad8290f28" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsAgencyTitleInsurancePremiumsMember_3238c6cb-0cf0-4c37-9688-2cea9309b7a2" xlink:href="fnf-20200630.xsd#fnf_InsuranceContractsAgencyTitleInsurancePremiumsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_InsuranceContractsAgencyTitleInsurancePremiumsMember_3238c6cb-0cf0-4c37-9688-2cea9309b7a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_LifeInsurancePremiumsInsuranceAndInvestmentProductFeesOtherMember_0ffaf629-ebca-4c95-8a3a-944bd278f56f" xlink:href="fnf-20200630.xsd#fnf_LifeInsurancePremiumsInsuranceAndInvestmentProductFeesOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_LifeInsurancePremiumsInsuranceAndInvestmentProductFeesOtherMember_0ffaf629-ebca-4c95-8a3a-944bd278f56f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsHomeWarrantyMember_20fdd583-86e3-4476-8925-bbe859bce13d" xlink:href="fnf-20200630.xsd#fnf_InsuranceContractsHomeWarrantyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_InsuranceContractsHomeWarrantyMember_20fdd583-86e3-4476-8925-bbe859bce13d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_InsuranceContractsMember_389e1442-5506-4917-9877-f6caf4e31664" xlink:href="fnf-20200630.xsd#fnf_InsuranceContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_InsuranceContractsMember_389e1442-5506-4917-9877-f6caf4e31664" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_EscrowFeesMember_585a5dd6-96f0-4a66-bf8f-91cd71b4dc0b" xlink:href="fnf-20200630.xsd#fnf_EscrowFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_EscrowFeesMember_585a5dd6-96f0-4a66-bf8f-91cd71b4dc0b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherTitleRelatedFeesAndIncomeMember_2270d297-0f24-4c2e-840d-30a8205134d1" xlink:href="fnf-20200630.xsd#fnf_OtherTitleRelatedFeesAndIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_OtherTitleRelatedFeesAndIncomeMember_2270d297-0f24-4c2e-840d-30a8205134d1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ServiceLinkExcludingTitlePremiumsEscrowFeesAndSubservicingFeesMember_d69816a2-ebdd-4bcc-b639-ee8658d9b1af" xlink:href="fnf-20200630.xsd#fnf_ServiceLinkExcludingTitlePremiumsEscrowFeesAndSubservicingFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_ServiceLinkExcludingTitlePremiumsEscrowFeesAndSubservicingFeesMember_d69816a2-ebdd-4bcc-b639-ee8658d9b1af" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_RealEstateTechnologyMember_c64db690-6182-4b4d-8558-1d63c6e80065" xlink:href="fnf-20200630.xsd#fnf_RealEstateTechnologyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_RealEstateTechnologyMember_c64db690-6182-4b4d-8558-1d63c6e80065" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ReatEstateBrokerageMember_0bc8337f-5576-4875-8862-ae8d60d23fc9" xlink:href="fnf-20200630.xsd#fnf_ReatEstateBrokerageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_ReatEstateBrokerageMember_0bc8337f-5576-4875-8862-ae8d60d23fc9" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_OtherProductsAndServicesMember_e5b58f8e-6883-4968-934f-818a018a5ee5" xlink:href="fnf-20200630.xsd#fnf_OtherProductsAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5b5f6c5c-125c-4c36-9172-7f6a4155207a" xlink:to="loc_fnf_OtherProductsAndServicesMember_e5b58f8e-6883-4968-934f-818a018a5ee5" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/RevenueRecognitionInformationaboutReceivablesandDeferredRevenueDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#RevenueRecognitionInformationaboutReceivablesandDeferredRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/RevenueRecognitionInformationaboutReceivablesandDeferredRevenueDetails" xlink:type="extended" id="i434782ef3a3b4042833d4530690363a6_RevenueRecognitionInformationaboutReceivablesandDeferredRevenueDetails"/>
  <link:roleRef roleURI="http://www.fnf.com/role/Intangibles" xlink:type="simple" xlink:href="fnf-20200630.xsd#Intangibles"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Intangibles" xlink:type="extended" id="i09a345cf2da244ae8ef219ed8cfff0d8_Intangibles"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#IntangiblesTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesTables" xlink:type="extended" id="iae25cb40594f452788a0df82eb8041dd_IntangiblesTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail" xlink:type="simple" xlink:href="fnf-20200630.xsd#IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail" xlink:type="extended" id="i0e7f4408b4b64a92a88780fbe11e2a12_IntangiblesSummaryofChangesinCarryingAmountsofIntangibleAssetsIncludingDACVOBAandDSIDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a3675add-e825-488d-a973-d258e2c1dac4" 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_535cfd92-7a00-47b6-a483-c3d0287d97bd" 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_a3675add-e825-488d-a973-d258e2c1dac4" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired_df4de094-e70a-475a-b078-6134ada072db" 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_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired_df4de094-e70a-475a-b078-6134ada072db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfitsAcquisitionAddition_ab93c360-cd97-4cd7-b5f2-35bc80c48e48" xlink:href="fnf-20200630.xsd#fnf_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfitsAcquisitionAddition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureInsuranceProfitsAcquisitionAddition_ab93c360-cd97-4cd7-b5f2-35bc80c48e48" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions_cf0a6f52-2f85-4718-b4c6-dbb7fd385cef" 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_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions_cf0a6f52-2f85-4718-b4c6-dbb7fd385cef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1_cd2db0de-33bc-4eb7-9899-8899e8a5b864" 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_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:to="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1_cd2db0de-33bc-4eb7-9899-8899e8a5b864" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureInsuranceProfitsPeriodicAmortization_34e655eb-0c77-43e4-83bd-7925ddcb04ce" xlink:href="fnf-20200630.xsd#fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureInsuranceProfitsPeriodicAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureInsuranceProfitsPeriodicAmortization_34e655eb-0c77-43e4-83bd-7925ddcb04ce" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnlockingAdjustment_bd698179-eaca-46df-990c-1fa8650c1ded" xlink:href="fnf-20200630.xsd#fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnlockingAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnlockingAdjustment_bd698179-eaca-46df-990c-1fa8650c1ded" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnrealizedInvestmentGainLoss_93d7afe0-7184-40ee-b7f1-a8c1e95ff75f" xlink:href="fnf-20200630.xsd#fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnrealizedInvestmentGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract_535cfd92-7a00-47b6-a483-c3d0287d97bd" xlink:to="loc_fnf_DeferredPolicyAcquisitionCostsandPresentValueofFutureProfitsUnrealizedInvestmentGainLoss_93d7afe0-7184-40ee-b7f1-a8c1e95ff75f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired_5451129d-c61c-4a15-a3dc-a8366de3d71e" 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_2bf5c6de-6b8f-49f4-b4e2-37ed1a2bdc78" 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_a3675add-e825-488d-a973-d258e2c1dac4" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_2bf5c6de-6b8f-49f4-b4e2-37ed1a2bdc78" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_767db8bb-f259-4b67-987b-9506055e0bf6" 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_2bf5c6de-6b8f-49f4-b4e2-37ed1a2bdc78" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_767db8bb-f259-4b67-987b-9506055e0bf6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_767db8bb-f259-4b67-987b-9506055e0bf6_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_767db8bb-f259-4b67-987b-9506055e0bf6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_767db8bb-f259-4b67-987b-9506055e0bf6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a1b8bcc6-7781-4e02-a782-c86af85d9446" 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_767db8bb-f259-4b67-987b-9506055e0bf6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a1b8bcc6-7781-4e02-a782-c86af85d9446" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_VobaMember_4a803d49-0a29-4359-a9cd-e7319c24ca4e" xlink:href="fnf-20200630.xsd#fnf_VobaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a1b8bcc6-7781-4e02-a782-c86af85d9446" xlink:to="loc_fnf_VobaMember_4a803d49-0a29-4359-a9cd-e7319c24ca4e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DacMember_abff07f1-4408-4ad7-aa5e-c3f02b995f13" xlink:href="fnf-20200630.xsd#fnf_DacMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a1b8bcc6-7781-4e02-a782-c86af85d9446" xlink:to="loc_fnf_DacMember_abff07f1-4408-4ad7-aa5e-c3f02b995f13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DSIMember_e6664f72-ca9d-4157-9453-1aeeaca322c0" xlink:href="fnf-20200630.xsd#fnf_DSIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a1b8bcc6-7781-4e02-a782-c86af85d9446" xlink:to="loc_fnf_DSIMember_e6664f72-ca9d-4157-9453-1aeeaca322c0" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesNarrativeDetail" xlink:type="simple" xlink:href="fnf-20200630.xsd#IntangiblesNarrativeDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesNarrativeDetail" xlink:type="extended" id="ifd4cb30dd0b04967afd46c5bcdf4641f_IntangiblesNarrativeDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" 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_fe270479-0823-421b-b4df-446a1c52ec8c" xlink:href="fnf-20200630.xsd#fnf_ValueofBusinessAcquiredAssumptionInterestRatetoCalculateAccretiononIntangibleAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_ValueofBusinessAcquiredAssumptionInterestRatetoCalculateAccretiononIntangibleAsset_fe270479-0823-421b-b4df-446a1c52ec8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PresentValueOfFutureInsuranceProfitsUnrealizedGainLossOnInvestment_1a72e383-4b60-4f22-a1c1-1d9716f2d232" 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_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_us-gaap_PresentValueOfFutureInsuranceProfitsUnrealizedGainLossOnInvestment_1a72e383-4b60-4f22-a1c1-1d9716f2d232" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CumulativeAdjustmentsForNetUnrealizedInvestmentGains_4c3f7229-1325-473f-9558-e25329b02c8d" xlink:href="fnf-20200630.xsd#fnf_CumulativeAdjustmentsForNetUnrealizedInvestmentGains"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_CumulativeAdjustmentsForNetUnrealizedInvestmentGains_4c3f7229-1325-473f-9558-e25329b02c8d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredSalesInducementCostUnrealizedGainLossOnInvestment_ea22e4f1-f709-4b39-9786-49540fd25b4b" 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_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_us-gaap_DeferredSalesInducementCostUnrealizedGainLossOnInvestment_ea22e4f1-f709-4b39-9786-49540fd25b4b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueNet_fbd2f525-1ebc-41ca-8a8c-eeebdbe7c3ed" xlink:href="fnf-20200630.xsd#fnf_UnearnedRevenueNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_UnearnedRevenueNet_fbd2f525-1ebc-41ca-8a8c-eeebdbe7c3ed" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueAdditions_91e04770-d9af-4b36-9cc0-c6cfac9767ca" xlink:href="fnf-20200630.xsd#fnf_UnearnedRevenueAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_UnearnedRevenueAdditions_91e04770-d9af-4b36-9cc0-c6cfac9767ca" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueAmortizationExpense_d7d15100-8a65-45b5-8dfc-4ed68e885619" xlink:href="fnf-20200630.xsd#fnf_UnearnedRevenueAmortizationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_UnearnedRevenueAmortizationExpense_d7d15100-8a65-45b5-8dfc-4ed68e885619" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueInterestExpense_91552354-3592-4f0c-8165-c9d6652f8cb4" xlink:href="fnf-20200630.xsd#fnf_UnearnedRevenueInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_UnearnedRevenueInterestExpense_91552354-3592-4f0c-8165-c9d6652f8cb4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueUnlockingAdjustment_cc7bc213-866d-4e7c-a073-36c669be9421" xlink:href="fnf-20200630.xsd#fnf_UnearnedRevenueUnlockingAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_UnearnedRevenueUnlockingAdjustment_cc7bc213-866d-4e7c-a073-36c669be9421" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_UnearnedRevenueUnrealizedGainLossonInvestment_6dfd3646-15aa-4f1a-ae0a-8dde946857d0" xlink:href="fnf-20200630.xsd#fnf_UnearnedRevenueUnrealizedGainLossonInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_fnf_UnearnedRevenueUnrealizedGainLossonInvestment_6dfd3646-15aa-4f1a-ae0a-8dde946857d0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_04291e76-b660-4d0f-b68c-1c4867ac45ae" 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_389b2704-6869-4229-ac52-dabd867c0d03" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_04291e76-b660-4d0f-b68c-1c4867ac45ae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a93a79b0-5f40-4728-9ef3-47e40dbc5c20" 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_04291e76-b660-4d0f-b68c-1c4867ac45ae" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a93a79b0-5f40-4728-9ef3-47e40dbc5c20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a93a79b0-5f40-4728-9ef3-47e40dbc5c20_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_a93a79b0-5f40-4728-9ef3-47e40dbc5c20" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a93a79b0-5f40-4728-9ef3-47e40dbc5c20_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9cc85518-3aee-470e-86ce-a4b387b68088" 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_a93a79b0-5f40-4728-9ef3-47e40dbc5c20" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9cc85518-3aee-470e-86ce-a4b387b68088" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_VobaMember_638f138a-0546-46c0-b324-37edfe6f8689" xlink:href="fnf-20200630.xsd#fnf_VobaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9cc85518-3aee-470e-86ce-a4b387b68088" xlink:to="loc_fnf_VobaMember_638f138a-0546-46c0-b324-37edfe6f8689" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_DacMember_ad4aca26-6b2c-4112-8492-cdfb45d360c7" xlink:href="fnf-20200630.xsd#fnf_DacMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9cc85518-3aee-470e-86ce-a4b387b68088" xlink:to="loc_fnf_DacMember_ad4aca26-6b2c-4112-8492-cdfb45d360c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_86df5878-2b28-488c-b037-ff6972642a01" 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_04291e76-b660-4d0f-b68c-1c4867ac45ae" xlink:to="loc_srt_RangeAxis_86df5878-2b28-488c-b037-ff6972642a01" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_86df5878-2b28-488c-b037-ff6972642a01_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_86df5878-2b28-488c-b037-ff6972642a01" xlink:to="loc_srt_RangeMember_86df5878-2b28-488c-b037-ff6972642a01_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e45bb7b5-e647-474f-8e04-fd4933e3df04" 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_86df5878-2b28-488c-b037-ff6972642a01" xlink:to="loc_srt_RangeMember_e45bb7b5-e647-474f-8e04-fd4933e3df04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f40594d1-8a1e-4a6d-ba5a-c0806e65c6b1" 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_e45bb7b5-e647-474f-8e04-fd4933e3df04" xlink:to="loc_srt_MinimumMember_f40594d1-8a1e-4a6d-ba5a-c0806e65c6b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_dd6e9b10-a703-406b-ab00-6cdaee725b00" 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_e45bb7b5-e647-474f-8e04-fd4933e3df04" xlink:to="loc_srt_MaximumMember_dd6e9b10-a703-406b-ab00-6cdaee725b00" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail" xlink:type="simple" xlink:href="fnf-20200630.xsd#IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail" xlink:type="extended" id="iac7d88c058df4f6ab88e774dce43b542_IntangiblesEstimatedAmortizationExpenseforVOBAinFutureFiscalPeriodsDetail"/>
  <link:roleRef roleURI="http://www.fnf.com/role/IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails" xlink:type="extended" id="iaddef534eb804fcb8142b674d3b6f1f6_IntangiblesDefiniteandIndefiniteLivedIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e9173a6b-833a-4e5e-8c07-85f774e94eb1" 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_5825dd78-c007-4ebb-ae31-19adb8932364" 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_e9173a6b-833a-4e5e-8c07-85f774e94eb1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_5825dd78-c007-4ebb-ae31-19adb8932364" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_12a19927-a59e-4c1b-951b-793c76648c95" 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_e9173a6b-833a-4e5e-8c07-85f774e94eb1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_12a19927-a59e-4c1b-951b-793c76648c95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_109d13d3-936b-4dd4-bc46-e4dbe0591215" 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_e9173a6b-833a-4e5e-8c07-85f774e94eb1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_109d13d3-936b-4dd4-bc46-e4dbe0591215" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_c0ea831e-9da4-432e-97a6-2ee2dd3ec9bd" 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_e9173a6b-833a-4e5e-8c07-85f774e94eb1" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_c0ea831e-9da4-432e-97a6-2ee2dd3ec9bd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0d97556b-442e-4f0b-91f5-0168731dfaa1" 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_e9173a6b-833a-4e5e-8c07-85f774e94eb1" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_0d97556b-442e-4f0b-91f5-0168731dfaa1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8832412c-8eff-43e7-8a2f-3be32514a5a1" 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_e9173a6b-833a-4e5e-8c07-85f774e94eb1" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8832412c-8eff-43e7-8a2f-3be32514a5a1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_a5973f87-8955-42c1-bb50-57ac004eca61" 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_e9173a6b-833a-4e5e-8c07-85f774e94eb1" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_a5973f87-8955-42c1-bb50-57ac004eca61" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_1dd6781a-1eea-44b2-9e2d-3f80ab124ba5" 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_a5973f87-8955-42c1-bb50-57ac004eca61" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_1dd6781a-1eea-44b2-9e2d-3f80ab124ba5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1dd6781a-1eea-44b2-9e2d-3f80ab124ba5_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_1dd6781a-1eea-44b2-9e2d-3f80ab124ba5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1dd6781a-1eea-44b2-9e2d-3f80ab124ba5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_0bf7e212-4921-47aa-82ca-027bc94141c4" 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_1dd6781a-1eea-44b2-9e2d-3f80ab124ba5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_0bf7e212-4921-47aa-82ca-027bc94141c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FglMember_ef988dc0-efed-43b3-9658-26889a868af5" xlink:href="fnf-20200630.xsd#fnf_FglMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_0bf7e212-4921-47aa-82ca-027bc94141c4" xlink:to="loc_fnf_FglMember_ef988dc0-efed-43b3-9658-26889a868af5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_7b903761-bd4d-444d-a9f0-bb63754558f6" 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_a5973f87-8955-42c1-bb50-57ac004eca61" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_7b903761-bd4d-444d-a9f0-bb63754558f6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_7b903761-bd4d-444d-a9f0-bb63754558f6_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_7b903761-bd4d-444d-a9f0-bb63754558f6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_7b903761-bd4d-444d-a9f0-bb63754558f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_369863b8-f988-465f-a2c2-d7f7fcd9bbe5" 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_7b903761-bd4d-444d-a9f0-bb63754558f6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_369863b8-f988-465f-a2c2-d7f7fcd9bbe5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_CustomerRelationshipsAndContractsMember_060df08d-a128-474d-8e79-befa7d571f3f" xlink:href="fnf-20200630.xsd#fnf_CustomerRelationshipsAndContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_369863b8-f988-465f-a2c2-d7f7fcd9bbe5" xlink:to="loc_fnf_CustomerRelationshipsAndContractsMember_060df08d-a128-474d-8e79-befa7d571f3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_fcd0cc20-fcd0-4645-b0e0-7a163a55aeb6" 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_369863b8-f988-465f-a2c2-d7f7fcd9bbe5" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_fcd0cc20-fcd0-4645-b0e0-7a163a55aeb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ValueOfDistributionAssetMember_27a2dd36-2587-4b04-b379-78be992a1cae" xlink:href="fnf-20200630.xsd#fnf_ValueOfDistributionAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_369863b8-f988-465f-a2c2-d7f7fcd9bbe5" xlink:to="loc_fnf_ValueOfDistributionAssetMember_27a2dd36-2587-4b04-b379-78be992a1cae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_1797355c-6ca2-4936-b05b-07dca55b4041" 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_369863b8-f988-465f-a2c2-d7f7fcd9bbe5" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_1797355c-6ca2-4936-b05b-07dca55b4041" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_e4083019-3233-4a95-80c1-9bde5d3d5d45" 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_a5973f87-8955-42c1-bb50-57ac004eca61" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_e4083019-3233-4a95-80c1-9bde5d3d5d45" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_e4083019-3233-4a95-80c1-9bde5d3d5d45_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_e4083019-3233-4a95-80c1-9bde5d3d5d45" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_e4083019-3233-4a95-80c1-9bde5d3d5d45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0afb93a8-3e51-4f06-96bc-bd5018fbc4f4" 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_e4083019-3233-4a95-80c1-9bde5d3d5d45" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0afb93a8-3e51-4f06-96bc-bd5018fbc4f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_60acd2d7-0d83-4b59-9e6e-866fc294f17c" 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_0afb93a8-3e51-4f06-96bc-bd5018fbc4f4" xlink:to="loc_us-gaap_LicensingAgreementsMember_60acd2d7-0d83-4b59-9e6e-866fc294f17c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_3adc7e5b-8077-423f-98ba-c9697faeae3d" 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_a5973f87-8955-42c1-bb50-57ac004eca61" xlink:to="loc_srt_RangeAxis_3adc7e5b-8077-423f-98ba-c9697faeae3d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3adc7e5b-8077-423f-98ba-c9697faeae3d_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_3adc7e5b-8077-423f-98ba-c9697faeae3d" xlink:to="loc_srt_RangeMember_3adc7e5b-8077-423f-98ba-c9697faeae3d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_21d4bd32-6371-4a8a-b8eb-ea4f402103d9" 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_3adc7e5b-8077-423f-98ba-c9697faeae3d" xlink:to="loc_srt_RangeMember_21d4bd32-6371-4a8a-b8eb-ea4f402103d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_89475564-2e22-480d-9d6c-78a173c284a8" 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_21d4bd32-6371-4a8a-b8eb-ea4f402103d9" xlink:to="loc_srt_MinimumMember_89475564-2e22-480d-9d6c-78a173c284a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_76a4ae29-72f8-4939-9d1b-e0bb1999b3f8" 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_21d4bd32-6371-4a8a-b8eb-ea4f402103d9" xlink:to="loc_srt_MaximumMember_76a4ae29-72f8-4939-9d1b-e0bb1999b3f8" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/Goodwill" xlink:type="simple" xlink:href="fnf-20200630.xsd#Goodwill"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/Goodwill" xlink:type="extended" id="i731afc321e9248d9b7c74fdd9300bb02_Goodwill"/>
  <link:roleRef roleURI="http://www.fnf.com/role/GoodwillTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#GoodwillTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/GoodwillTables" xlink:type="extended" id="if9cb2b08a43549ee89e979db5b34050c_GoodwillTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/GoodwillDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#GoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/GoodwillDetails" xlink:type="extended" id="i201a1a9c175442b490047d9872296f50_GoodwillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_d200b8f9-be71-4bb8-bba0-82475f66d469" 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_a619e20c-6af5-4d75-8f3e-65fac9284586" 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_d200b8f9-be71-4bb8-bba0-82475f66d469" xlink:to="loc_us-gaap_GoodwillRollForward_a619e20c-6af5-4d75-8f3e-65fac9284586" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_8daf61ca-fc88-497f-8a3c-ef4c6e08c047" 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_a619e20c-6af5-4d75-8f3e-65fac9284586" xlink:to="loc_us-gaap_Goodwill_8daf61ca-fc88-497f-8a3c-ef4c6e08c047" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_3c34fab5-9edc-402d-801d-cf5f745f2e7f" 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_a619e20c-6af5-4d75-8f3e-65fac9284586" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_3c34fab5-9edc-402d-801d-cf5f745f2e7f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_c9f541f4-5427-456f-af38-e2c3b6acc748" 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_42847e62-b382-4d0a-90c2-d4d8fd328a9b" 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_d200b8f9-be71-4bb8-bba0-82475f66d469" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_42847e62-b382-4d0a-90c2-d4d8fd328a9b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsAxis_a4abc289-69eb-4cb9-b1ab-c67b2f65f531" 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_42847e62-b382-4d0a-90c2-d4d8fd328a9b" xlink:to="loc_us-gaap_SubsegmentsAxis_a4abc289-69eb-4cb9-b1ab-c67b2f65f531" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_a4abc289-69eb-4cb9-b1ab-c67b2f65f531_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_a4abc289-69eb-4cb9-b1ab-c67b2f65f531" xlink:to="loc_us-gaap_SubsegmentsDomain_a4abc289-69eb-4cb9-b1ab-c67b2f65f531_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsDomain_609320bb-b7b1-41f9-b576-32a808884b47" 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_a4abc289-69eb-4cb9-b1ab-c67b2f65f531" xlink:to="loc_us-gaap_SubsegmentsDomain_609320bb-b7b1-41f9-b576-32a808884b47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_TitleSegmentMember_82af8d97-2e4f-495b-ba03-fe0dd6504f30" xlink:href="fnf-20200630.xsd#fnf_TitleSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_609320bb-b7b1-41f9-b576-32a808884b47" xlink:to="loc_fnf_TitleSegmentMember_82af8d97-2e4f-495b-ba03-fe0dd6504f30" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FGMember_f6d5608f-8ae0-4ed3-8bf7-99dd0a3a7138" xlink:href="fnf-20200630.xsd#fnf_FGMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_609320bb-b7b1-41f9-b576-32a808884b47" xlink:to="loc_fnf_FGMember_f6d5608f-8ae0-4ed3-8bf7-99dd0a3a7138" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FidelityNationalFinancialCoreCorporateandOtherSubsegmentMember_1b68c9d5-bfcf-49b2-8662-aecc7447837a" xlink:href="fnf-20200630.xsd#fnf_FidelityNationalFinancialCoreCorporateandOtherSubsegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsDomain_609320bb-b7b1-41f9-b576-32a808884b47" xlink:to="loc_fnf_FidelityNationalFinancialCoreCorporateandOtherSubsegmentMember_1b68c9d5-bfcf-49b2-8662-aecc7447837a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_0f4de8f0-7b0c-4d57-ac14-c88f123bbf35" 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_42847e62-b382-4d0a-90c2-d4d8fd328a9b" xlink:to="loc_srt_ConsolidationItemsAxis_0f4de8f0-7b0c-4d57-ac14-c88f123bbf35" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_0f4de8f0-7b0c-4d57-ac14-c88f123bbf35_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_0f4de8f0-7b0c-4d57-ac14-c88f123bbf35" xlink:to="loc_srt_ConsolidationItemsDomain_0f4de8f0-7b0c-4d57-ac14-c88f123bbf35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_57bc0a11-7a9e-4921-887a-5f132c5c1631" 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_0f4de8f0-7b0c-4d57-ac14-c88f123bbf35" xlink:to="loc_srt_ConsolidationItemsDomain_57bc0a11-7a9e-4921-887a-5f132c5c1631" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_6b9d50f9-69f8-4aa4-af50-d78a1e93f0f2" 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_57bc0a11-7a9e-4921-887a-5f132c5c1631" xlink:to="loc_us-gaap_OperatingSegmentsMember_6b9d50f9-69f8-4aa4-af50-d78a1e93f0f2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/DiscontinuedOperations" xlink:type="simple" xlink:href="fnf-20200630.xsd#DiscontinuedOperations"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/DiscontinuedOperations" xlink:type="extended" id="i51e916e727e2418a948a0a2ca200ba44_DiscontinuedOperations"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsurance" xlink:type="simple" xlink:href="fnf-20200630.xsd#FGReinsurance"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsurance" xlink:type="extended" id="i9f68815788fc453d83cee72e1db7247c_FGReinsurance"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsuranceTables" xlink:type="simple" xlink:href="fnf-20200630.xsd#FGReinsuranceTables"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsuranceTables" xlink:type="extended" id="i8ef8279d94684c94930f9c2bdf88e5b6_FGReinsuranceTables"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail" xlink:type="simple" xlink:href="fnf-20200630.xsd#FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail" xlink:type="extended" id="ie1cda8bd5ca048ac9c65839b045cf1ff_FGReinsuranceEffectofReinsuranceonPremiumsEarnedBenefitsIncurredandReserveChangesDetail">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectsOfReinsuranceLineItems_fe9254d7-cb27-4340-842c-2abf0acfc8c4" 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_d3bf99fe-3cd7-46cb-9d2f-7a2392669e5c" 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_fe9254d7-cb27-4340-842c-2abf0acfc8c4" xlink:to="loc_us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentNetAmountAbstract_d3bf99fe-3cd7-46cb-9d2f-7a2392669e5c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectPremiumsEarned_f6aaeb64-f1c4-4cd5-b5fd-107da2ecee0e" 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_d3bf99fe-3cd7-46cb-9d2f-7a2392669e5c" xlink:to="loc_us-gaap_DirectPremiumsEarned_f6aaeb64-f1c4-4cd5-b5fd-107da2ecee0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssumedPremiumsEarned_fa8c5a27-beea-4c29-9535-73dc45f8b97d" 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_d3bf99fe-3cd7-46cb-9d2f-7a2392669e5c" xlink:to="loc_us-gaap_AssumedPremiumsEarned_fa8c5a27-beea-4c29-9535-73dc45f8b97d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededPremiumsEarned_eab0c998-3fa2-4f77-a14f-f0ecb2c0e31c" 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_d3bf99fe-3cd7-46cb-9d2f-7a2392669e5c" xlink:to="loc_us-gaap_CededPremiumsEarned_eab0c998-3fa2-4f77-a14f-f0ecb2c0e31c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PremiumsEarnedNet_4eaa071d-2434-435b-9893-8c122f6feab7" 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_d3bf99fe-3cd7-46cb-9d2f-7a2392669e5c" xlink:to="loc_us-gaap_PremiumsEarnedNet_4eaa071d-2434-435b-9893-8c122f6feab7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_c2f1edeb-0a01-4fa0-97d4-901a9383b22c" 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_fe9254d7-cb27-4340-842c-2abf0acfc8c4" xlink:to="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract_c2f1edeb-0a01-4fa0-97d4-901a9383b22c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredGross_4baa789e-d8db-4e3d-9333-55b4c3cfab34" 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_c2f1edeb-0a01-4fa0-97d4-901a9383b22c" xlink:to="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredGross_4baa789e-d8db-4e3d-9333-55b4c3cfab34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed_e6ba415f-3499-4f11-ac0b-022027428856" 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_c2f1edeb-0a01-4fa0-97d4-901a9383b22c" xlink:to="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed_e6ba415f-3499-4f11-ac0b-022027428856" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded_2159faf0-5d3d-4b95-9764-e67fafab00a5" 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_c2f1edeb-0a01-4fa0-97d4-901a9383b22c" xlink:to="loc_us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded_2159faf0-5d3d-4b95-9764-e67fafab00a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_3bad60a4-02c5-4a91-8ec5-e53b4c69ea33" 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_c2f1edeb-0a01-4fa0-97d4-901a9383b22c" xlink:to="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_3bad60a4-02c5-4a91-8ec5-e53b4c69ea33" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectsOfReinsuranceTable_eaabf981-3718-4473-ab1b-ff31db6f9b8a" 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_fe9254d7-cb27-4340-842c-2abf0acfc8c4" xlink:to="loc_us-gaap_EffectsOfReinsuranceTable_eaabf981-3718-4473-ab1b-ff31db6f9b8a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_bce3082c-65ba-4425-8397-dd70fa675fcb" 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_eaabf981-3718-4473-ab1b-ff31db6f9b8a" xlink:to="loc_srt_ProductOrServiceAxis_bce3082c-65ba-4425-8397-dd70fa675fcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_bce3082c-65ba-4425-8397-dd70fa675fcb_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_bce3082c-65ba-4425-8397-dd70fa675fcb" xlink:to="loc_srt_ProductsAndServicesDomain_bce3082c-65ba-4425-8397-dd70fa675fcb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_54a818e5-4a0c-4c51-8015-4496a2132bf7" 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_bce3082c-65ba-4425-8397-dd70fa675fcb" xlink:to="loc_srt_ProductsAndServicesDomain_54a818e5-4a0c-4c51-8015-4496a2132bf7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeInsuranceSegmentMember_c9f1e653-ba33-4cbd-af53-6ba66956bc12" 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_54a818e5-4a0c-4c51-8015-4496a2132bf7" xlink:to="loc_us-gaap_LifeInsuranceSegmentMember_c9f1e653-ba33-4cbd-af53-6ba66956bc12" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FGReinsuranceNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#FGReinsuranceNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGReinsuranceNarrativeDetails" xlink:type="extended" id="i1a4d4d6e5fc8451aa89c7cc975a223d2_FGReinsuranceNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskLineItems_21926b1d-2903-4c7e-a19f-c276f2f4df43" 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_ae3f073c-90e1-4236-b006-de953ae9e393" 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_21926b1d-2903-4c7e-a19f-c276f2f4df43" xlink:to="loc_us-gaap_ReinsuranceRecoverablesAllowance_ae3f073c-90e1-4236-b006-de953ae9e393" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_PoliciesReinsuredbyForeignCompanyNotEngagedinInsurance_559d71f8-6ffd-44d0-9371-091e03c78b40" xlink:href="fnf-20200630.xsd#fnf_PoliciesReinsuredbyForeignCompanyNotEngagedinInsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_21926b1d-2903-4c7e-a19f-c276f2f4df43" xlink:to="loc_fnf_PoliciesReinsuredbyForeignCompanyNotEngagedinInsurance_559d71f8-6ffd-44d0-9371-091e03c78b40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_ReinsuranceRiskChargeFee_633b7684-40ae-4a4d-838c-803aa9eda18d" xlink:href="fnf-20200630.xsd#fnf_ReinsuranceRiskChargeFee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CededCreditRiskLineItems_21926b1d-2903-4c7e-a19f-c276f2f4df43" xlink:to="loc_fnf_ReinsuranceRiskChargeFee_633b7684-40ae-4a4d-838c-803aa9eda18d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReinsuranceRetentionPolicyAmountRetained_9b6129b2-6f8e-413e-a222-22e9780a3954" 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_21926b1d-2903-4c7e-a19f-c276f2f4df43" xlink:to="loc_us-gaap_ReinsuranceRetentionPolicyAmountRetained_9b6129b2-6f8e-413e-a222-22e9780a3954" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_ff30916b-a46e-4bb8-a830-0cde68b52c6f" 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_21926b1d-2903-4c7e-a19f-c276f2f4df43" xlink:to="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_ff30916b-a46e-4bb8-a830-0cde68b52c6f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CededCreditRiskTable_9c71af06-e689-40ce-a9f6-1e736721550f" 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_21926b1d-2903-4c7e-a19f-c276f2f4df43" xlink:to="loc_us-gaap_CededCreditRiskTable_9c71af06-e689-40ce-a9f6-1e736721550f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_897c4eff-4e4d-4916-a6e5-e2fb52267e78" 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_9c71af06-e689-40ce-a9f6-1e736721550f" xlink:to="loc_srt_ProductOrServiceAxis_897c4eff-4e4d-4916-a6e5-e2fb52267e78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_897c4eff-4e4d-4916-a6e5-e2fb52267e78_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_897c4eff-4e4d-4916-a6e5-e2fb52267e78" xlink:to="loc_srt_ProductsAndServicesDomain_897c4eff-4e4d-4916-a6e5-e2fb52267e78_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_fb6b7670-c12d-4152-b1cb-646f62a750f9" 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_897c4eff-4e4d-4916-a6e5-e2fb52267e78" xlink:to="loc_srt_ProductsAndServicesDomain_fb6b7670-c12d-4152-b1cb-646f62a750f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_1ededf94-adaf-449e-8fd2-36fb3757890f" 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_fb6b7670-c12d-4152-b1cb-646f62a750f9" xlink:to="loc_us-gaap_LifeAndAnnuityInsuranceProductLineMember_1ededf94-adaf-449e-8fd2-36fb3757890f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_FixedIndexAnnuityMember_6eaa4e9a-2b1f-477d-9d85-22ae64952d67" xlink:href="fnf-20200630.xsd#fnf_FixedIndexAnnuityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_fb6b7670-c12d-4152-b1cb-646f62a750f9" xlink:to="loc_fnf_FixedIndexAnnuityMember_6eaa4e9a-2b1f-477d-9d85-22ae64952d67" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9d615701-99a0-48b8-9abc-fffa18878d5b" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_CededCreditRiskTable_9c71af06-e689-40ce-a9f6-1e736721550f" xlink:to="loc_dei_LegalEntityAxis_9d615701-99a0-48b8-9abc-fffa18878d5b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9d615701-99a0-48b8-9abc-fffa18878d5b_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9d615701-99a0-48b8-9abc-fffa18878d5b" xlink:to="loc_dei_EntityDomain_9d615701-99a0-48b8-9abc-fffa18878d5b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_049f931e-c931-4f59-996e-5998055c7a81" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9d615701-99a0-48b8-9abc-fffa18878d5b" xlink:to="loc_dei_EntityDomain_049f931e-c931-4f59-996e-5998055c7a81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_WiltonReassuranceCompanyMember_fe396332-4037-4a08-9920-1289b2fbf337" xlink:href="fnf-20200630.xsd#fnf_WiltonReassuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_049f931e-c931-4f59-996e-5998055c7a81" xlink:to="loc_fnf_WiltonReassuranceCompanyMember_fe396332-4037-4a08-9920-1289b2fbf337" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_KuberaReassuranceCompanyMember_7303c8b5-1ad0-4eec-9976-1f246f06fd9c" xlink:href="fnf-20200630.xsd#fnf_KuberaReassuranceCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_049f931e-c931-4f59-996e-5998055c7a81" xlink:to="loc_fnf_KuberaReassuranceCompanyMember_7303c8b5-1ad0-4eec-9976-1f246f06fd9c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fnf.com/role/FGInsuranceSubsidiaryFinancialInformationandRegulatoryMatters" xlink:type="simple" xlink:href="fnf-20200630.xsd#FGInsuranceSubsidiaryFinancialInformationandRegulatoryMatters"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGInsuranceSubsidiaryFinancialInformationandRegulatoryMatters" xlink:type="extended" id="i7b3ea93f670e4ec58c1bc0d72809d307_FGInsuranceSubsidiaryFinancialInformationandRegulatoryMatters"/>
  <link:roleRef roleURI="http://www.fnf.com/role/FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersNarrativeDetails" xlink:type="simple" xlink:href="fnf-20200630.xsd#FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fnf.com/role/FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersNarrativeDetails" xlink:type="extended" id="i3fbdd8c0afa446b3b2f5ceec5ddd0a57_FGInsuranceSubsidiaryFinancialInformationandRegulatoryMattersNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesLineItems_b334788e-dd0b-4547-b6a0-eb6c2c10a9aa" 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_StatutoryAccountingPracticesStatutoryCapitalandSurplusIncreaseDecreaseasaResultofReDomesticationbyEntity_5d16f74b-4360-43be-bd95-bb062008ac8d" xlink:href="fnf-20200630.xsd#fnf_StatutoryAccountingPracticesStatutoryCapitalandSurplusIncreaseDecreaseasaResultofReDomesticationbyEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_b334788e-dd0b-4547-b6a0-eb6c2c10a9aa" xlink:to="loc_fnf_StatutoryAccountingPracticesStatutoryCapitalandSurplusIncreaseDecreaseasaResultofReDomesticationbyEntity_5d16f74b-4360-43be-bd95-bb062008ac8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StatutoryAccountingPracticesPermittedPracticeChangeinStatutoryCapitalandSurplus_6e6a0152-f04c-481a-87c1-54a5557acd11" xlink:href="fnf-20200630.xsd#fnf_StatutoryAccountingPracticesPermittedPracticeChangeinStatutoryCapitalandSurplus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_b334788e-dd0b-4547-b6a0-eb6c2c10a9aa" xlink:to="loc_fnf_StatutoryAccountingPracticesPermittedPracticeChangeinStatutoryCapitalandSurplus_6e6a0152-f04c-481a-87c1-54a5557acd11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_fnf_StatutoryAccountingPracticesNonPermittedPracticeChangeinStatutoryCapitalandSurplus_f60e2b98-f065-4b2a-91bf-eda1bf4dd8b8" xlink:href="fnf-20200630.xsd#fnf_StatutoryAccountingPracticesNonPermittedPracticeChangeinStatutoryCapitalandSurplus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatutoryAccountingPracticesLineItems_b334788e-dd0b-4547-b6a0-eb6c2c10a9aa" xlink:to="loc_fnf_StatutoryAccountingPracticesNonPermittedPracticeChangeinStatutoryCapitalandSurplus_f60e2b98-f065-4b2a-91bf-eda1bf4dd8b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_aebeb698-2bd8-4c09-a62c-309efc5cb8d4" 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_b334788e-dd0b-4547-b6a0-eb6c2c10a9aa" xlink:to="loc_us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_aebeb698-2bd8-4c09-a62c-309efc5cb8d4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesTable_09bc9173-e3d2-4ba7-90a8-695f583385d5" 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_b334788e-dd0b-4547-b6a0-eb6c2c10a9aa" xlink:to="loc_us-gaap_StatutoryAccountingPracticesTable_09bc9173-e3d2-4ba7-90a8-695f583385d5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_de5f9fc5-224b-4a55-a8d7-c6d897a1dc43" 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_09bc9173-e3d2-4ba7-90a8-695f583385d5" xlink:to="loc_us-gaap_StatutoryAccountingPracticesByJurisdictionAxis_de5f9fc5-224b-4a55-a8d7-c6d897a1dc43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_de5f9fc5-224b-4a55-a8d7-c6d897a1dc43_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_de5f9fc5-224b-4a55-a8d7-c6d897a1dc43" xlink:to="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_de5f9fc5-224b-4a55-a8d7-c6d897a1dc43_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_7cd786f3-18c2-4152-84d2-b970ef66f3bd" 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_de5f9fc5-224b-4a55-a8d7-c6d897a1dc43" xlink:to="loc_us-gaap_StatutoryAccountingPracticesJurisdictionDomain_7cd786f3-18c2-4152-84d2-b970ef66f3bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_IA_2737b121-f9f9-4e5f-afe2-0cbfb4e78516" 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_7cd786f3-18c2-4152-84d2-b970ef66f3bd" xlink:to="loc_stpr_IA_2737b121-f9f9-4e5f-afe2-0cbfb4e78516" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
