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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019ea754-1b2f-73bd-9bca-ad8752fc7911,g:56f4f73c-0090-474e-8919-3fd25c767d08-->
<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://www.dlhcorp.com/role/Cover" xlink:type="simple" xlink:href="dlhc-20260729.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.dlhcorp.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019ea754-1b2f-7c01-95d9-fed08e75ef68" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_DocumentType_019ea754-1b2f-7c01-95d9-fed08e75ef68" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019ea754-1b2f-7080-a849-022baeff40de" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_DocumentPeriodEndDate_019ea754-1b2f-7080-a849-022baeff40de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019ea754-1b2f-7d3f-9eb2-35bcf7f5c078" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityRegistrantName_019ea754-1b2f-7d3f-9eb2-35bcf7f5c078" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019ea754-1b2f-7575-a79b-b5a52881c2d1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019ea754-1b2f-7575-a79b-b5a52881c2d1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019ea754-1b2f-74c7-bfc7-653354001ee7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityFileNumber_019ea754-1b2f-74c7-bfc7-653354001ee7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019ea754-1b2f-7b07-8bf4-5dc5455670e1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityTaxIdentificationNumber_019ea754-1b2f-7b07-8bf4-5dc5455670e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019ea754-1b2f-771f-910b-9cb171692cf8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityAddressAddressLine1_019ea754-1b2f-771f-910b-9cb171692cf8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019ea754-1b2f-7f30-b982-bddded1fafe3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityAddressAddressLine2_019ea754-1b2f-7f30-b982-bddded1fafe3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine3_019ea754-1b2f-7fa2-ab1c-f26a4c39287c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine3"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityAddressAddressLine3_019ea754-1b2f-7fa2-ab1c-f26a4c39287c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019ea754-1b2f-7199-98b2-0866524f6787" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityAddressCityOrTown_019ea754-1b2f-7199-98b2-0866524f6787" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019ea754-1b2f-7545-8a18-0d05fcf33ec3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityAddressStateOrProvince_019ea754-1b2f-7545-8a18-0d05fcf33ec3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019ea754-1b2f-70ca-9c1f-d7ee43a940af" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityAddressPostalZipCode_019ea754-1b2f-70ca-9c1f-d7ee43a940af" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019ea754-1b2f-775e-b866-38b2a9789034" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_CityAreaCode_019ea754-1b2f-775e-b866-38b2a9789034" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019ea754-1b2f-7e19-8ade-2a7864508d4b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_LocalPhoneNumber_019ea754-1b2f-7e19-8ade-2a7864508d4b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019ea754-1b2f-78df-b885-fd2aefd387bb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_Security12bTitle_019ea754-1b2f-78df-b885-fd2aefd387bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019ea754-1b2f-7e4d-bfdd-bdd76a55df24" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_TradingSymbol_019ea754-1b2f-7e4d-bfdd-bdd76a55df24" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019ea754-1b2f-7083-9c2e-e1228e2ae2e2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_SecurityExchangeName_019ea754-1b2f-7083-9c2e-e1228e2ae2e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019ea754-1b2f-7600-8952-2e1aa3ce722c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_WrittenCommunications_019ea754-1b2f-7600-8952-2e1aa3ce722c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019ea754-1b2f-73c1-8fb4-4acc692dcc54" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_SolicitingMaterial_019ea754-1b2f-73c1-8fb4-4acc692dcc54" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019ea754-1b2f-7b56-9883-3212e977676d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_PreCommencementTenderOffer_019ea754-1b2f-7b56-9883-3212e977676d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019ea754-1b2f-71ba-84a3-1a16d7486a8c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019ea754-1b2f-71ba-84a3-1a16d7486a8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019ea754-1b2f-722c-8697-09a3cd187190" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityEmergingGrowthCompany_019ea754-1b2f-722c-8697-09a3cd187190" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019ea754-1b2f-7a8f-b153-f18e95d6d984" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_EntityCentralIndexKey_019ea754-1b2f-7a8f-b153-f18e95d6d984" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019ea754-1b2f-7c0b-a9e5-aee10430fdc1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019ea754-1b2f-7be8-9d6b-caba866902ac" xlink:to="loc_dei_AmendmentFlag_019ea754-1b2f-7c0b-a9e5-aee10430fdc1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
