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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e8b34-9a88-73db-9722-b0f0e3fbf2a1,g:a909eda0-7f6c-4b34-adc5-38871f331229-->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://alight.com/role/DocumentAndEntityInformation" xlink:type="simple" xlink:href="alit-20260603.xsd#DocumentAndEntityInformation"/>
  <link:presentationLink xlink:role="http://alight.com/role/DocumentAndEntityInformation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e8b34-9a88-7616-980d-c1f7cf846906" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityRegistrantName_019e8b34-9a88-7616-980d-c1f7cf846906" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e8b34-9a88-7ddb-ab18-604a04266384" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_AmendmentFlag_019e8b34-9a88-7ddb-ab18-604a04266384" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e8b34-9a88-7b04-b9e0-45428432fec5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityCentralIndexKey_019e8b34-9a88-7b04-b9e0-45428432fec5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e8b34-9a88-767c-a535-cd777717e6e1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_DocumentType_019e8b34-9a88-767c-a535-cd777717e6e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e8b34-9a88-75dc-9ea8-cb282f21c9fa" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_DocumentPeriodEndDate_019e8b34-9a88-75dc-9ea8-cb282f21c9fa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e8b34-9a88-709b-8f76-096f41ba5b21" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e8b34-9a88-709b-8f76-096f41ba5b21" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e8b34-9a88-7b06-803e-61f030395f5f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityFileNumber_019e8b34-9a88-7b06-803e-61f030395f5f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e8b34-9a88-75c6-8f94-dee8ccadf65a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e8b34-9a88-75c6-8f94-dee8ccadf65a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e8b34-9a88-7baf-808b-e3fa09ce8778" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityAddressAddressLine1_019e8b34-9a88-7baf-808b-e3fa09ce8778" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019e8b34-9a88-7c06-818c-d592c84f5edc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityAddressAddressLine2_019e8b34-9a88-7c06-818c-d592c84f5edc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine3_019e8b34-9a88-763b-a26e-74666b2f92fc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine3"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityAddressAddressLine3_019e8b34-9a88-763b-a26e-74666b2f92fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e8b34-9a88-7a44-a962-bf9ca995f27f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityAddressCityOrTown_019e8b34-9a88-7a44-a962-bf9ca995f27f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e8b34-9a88-7e3b-9266-0227af1d0c9e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityAddressStateOrProvince_019e8b34-9a88-7e3b-9266-0227af1d0c9e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e8b34-9a88-724c-8158-8f8deca9ee26" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityAddressPostalZipCode_019e8b34-9a88-724c-8158-8f8deca9ee26" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e8b34-9a88-7518-9e08-2fc8370013b6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_CityAreaCode_019e8b34-9a88-7518-9e08-2fc8370013b6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e8b34-9a88-7fb1-8686-2ea33c2bc854" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_LocalPhoneNumber_019e8b34-9a88-7fb1-8686-2ea33c2bc854" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019e8b34-9a88-7663-9c72-edf684de9dba" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_WrittenCommunications_019e8b34-9a88-7663-9c72-edf684de9dba" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019e8b34-9a88-74b5-8c59-8e99b01c0145" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_SolicitingMaterial_019e8b34-9a88-74b5-8c59-8e99b01c0145" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019e8b34-9a88-75ee-8ec4-bf322e10e2c7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_PreCommencementTenderOffer_019e8b34-9a88-75ee-8ec4-bf322e10e2c7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019e8b34-9a88-7867-9173-25a251f6838e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019e8b34-9a88-7867-9173-25a251f6838e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e8b34-9a88-7242-95ca-281befd13352" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_Security12bTitle_019e8b34-9a88-7242-95ca-281befd13352" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e8b34-9a88-7814-9b9c-2154919458ef" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_TradingSymbol_019e8b34-9a88-7814-9b9c-2154919458ef" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e8b34-9a88-7cac-895c-1aa549088775" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_SecurityExchangeName_019e8b34-9a88-7cac-895c-1aa549088775" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e8b34-9a88-728d-9841-6197b2cd4c83" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e8b34-9a88-7cd5-b9f5-d949331b4107" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e8b34-9a88-728d-9841-6197b2cd4c83" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
