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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f0561-303a-70ba-93a3-c04492e55850,g:0cf5c66d-affe-41d6-9ca1-e13355bfd698-->
<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://unifirst.com/role/DocumentandEntityInformation" xlink:type="simple" xlink:href="unf-20261021.xsd#DocumentandEntityInformation"/>
  <link:presentationLink xlink:role="http://unifirst.com/role/DocumentandEntityInformation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019f0561-303a-7576-b2db-cdb664f0d7e4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_DocumentType_019f0561-303a-7576-b2db-cdb664f0d7e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019f0561-303a-7cd5-8239-07cbf02cfd33" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_DocumentPeriodEndDate_019f0561-303a-7cd5-8239-07cbf02cfd33" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019f0561-303a-721f-863c-2be7a9751aab" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityRegistrantName_019f0561-303a-721f-863c-2be7a9751aab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019f0561-303a-72e1-ad26-6c91a70836a1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019f0561-303a-72e1-ad26-6c91a70836a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019f0561-303a-7e4b-9345-2a162da6dfd3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityFileNumber_019f0561-303a-7e4b-9345-2a162da6dfd3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019f0561-303a-75e6-977c-aacb7d5c1fa1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityTaxIdentificationNumber_019f0561-303a-75e6-977c-aacb7d5c1fa1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019f0561-303a-7a03-b0fb-49a8316a3d8d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityAddressAddressLine1_019f0561-303a-7a03-b0fb-49a8316a3d8d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019f0561-303a-79c1-9a7f-7b162b22b17e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityAddressCityOrTown_019f0561-303a-79c1-9a7f-7b162b22b17e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019f0561-303a-7786-995d-36a167944e24" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityAddressStateOrProvince_019f0561-303a-7786-995d-36a167944e24" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019f0561-303a-7eeb-a13a-9bea0cb1ec32" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityAddressPostalZipCode_019f0561-303a-7eeb-a13a-9bea0cb1ec32" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019f0561-303a-769a-9571-1c7d1c1a8196" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_CityAreaCode_019f0561-303a-769a-9571-1c7d1c1a8196" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019f0561-303a-789a-aaa7-8ce640331395" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_LocalPhoneNumber_019f0561-303a-789a-aaa7-8ce640331395" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019f0561-303a-74c4-ac7e-0e20aad954b8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_WrittenCommunications_019f0561-303a-74c4-ac7e-0e20aad954b8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019f0561-303a-740c-9356-ad880e102db2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_SolicitingMaterial_019f0561-303a-740c-9356-ad880e102db2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019f0561-303a-7f11-9d92-e8afeca868f4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_PreCommencementTenderOffer_019f0561-303a-7f11-9d92-e8afeca868f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019f0561-303a-7ba0-94ac-12f992fcf5b9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019f0561-303a-7ba0-94ac-12f992fcf5b9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019f0561-303a-7f4a-8742-580efe725464" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_Security12bTitle_019f0561-303a-7f4a-8742-580efe725464" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019f0561-303a-7331-b625-a11a2821e581" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_TradingSymbol_019f0561-303a-7331-b625-a11a2821e581" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019f0561-303a-7210-8cb6-2eb2e1619c33" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_SecurityExchangeName_019f0561-303a-7210-8cb6-2eb2e1619c33" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019f0561-303a-78fe-984f-ef09c9ff7cf0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityEmergingGrowthCompany_019f0561-303a-78fe-984f-ef09c9ff7cf0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019f0561-303a-7874-a7bc-51ca78c82f30" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_AmendmentFlag_019f0561-303a-7874-a7bc-51ca78c82f30" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019f0561-303a-706f-bff9-48ef443d98b3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f0561-303a-79e8-b662-903ef17f60eb" xlink:to="loc_dei_EntityCentralIndexKey_019f0561-303a-706f-bff9-48ef443d98b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
