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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e7567-4ee6-7ee0-acad-2c541607b7fd,g:584b9789-8b65-4555-8af1-ffa1e8dab902-->
<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.morningstar.com/role/Cover" xlink:type="simple" xlink:href="morn-20260618.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.morningstar.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019e7567-4ee6-7e31-a63c-4bfc97478012" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitiesTable_019e7567-4ee6-7994-bb47-ea94d2c16cf6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntitiesTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e7567-4ee6-7e31-a63c-4bfc97478012" xlink:to="loc_dei_EntitiesTable_019e7567-4ee6-7994-bb47-ea94d2c16cf6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityListingsExchangeAxis_019e7567-4ee6-74d3-97f6-d881d8fe5809" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityListingsExchangeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntitiesTable_019e7567-4ee6-7994-bb47-ea94d2c16cf6" xlink:to="loc_dei_EntityListingsExchangeAxis_019e7567-4ee6-74d3-97f6-d881d8fe5809" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ExchangeDomain_019e7567-4ee6-7fe0-b20d-3a872e486134" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ExchangeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityListingsExchangeAxis_019e7567-4ee6-74d3-97f6-d881d8fe5809" xlink:to="loc_dei_ExchangeDomain_019e7567-4ee6-7fe0-b20d-3a872e486134" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInformationLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntitiesTable_019e7567-4ee6-7994-bb47-ea94d2c16cf6" xlink:to="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e7567-4ee6-7651-a11c-073bcc5f0f71" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_DocumentPeriodEndDate_019e7567-4ee6-7651-a11c-073bcc5f0f71" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e7567-4ee6-7318-b50c-459fc496cb3a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityRegistrantName_019e7567-4ee6-7318-b50c-459fc496cb3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e7567-4ee6-791d-bc00-083176ca1e74" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e7567-4ee6-791d-bc00-083176ca1e74" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e7567-4ee6-7ac2-afcf-39f45cca73c7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityFileNumber_019e7567-4ee6-7ac2-afcf-39f45cca73c7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e7567-4ee6-7689-8c76-113fbaee1b90" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e7567-4ee6-7689-8c76-113fbaee1b90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e7567-4ee6-7432-84ef-b3aa184b8590" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityAddressStateOrProvince_019e7567-4ee6-7432-84ef-b3aa184b8590" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e7567-4ee6-7bd0-bc27-efb72b77cbea" 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_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityAddressAddressLine1_019e7567-4ee6-7bd0-bc27-efb72b77cbea" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e7567-4ee6-766d-ba03-c51ff4398581" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityAddressCityOrTown_019e7567-4ee6-766d-ba03-c51ff4398581" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e7567-4ee6-7f97-a733-6e33d9244ac6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityAddressPostalZipCode_019e7567-4ee6-7f97-a733-6e33d9244ac6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e7567-4ee6-78e4-bee8-9399da2baf93" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_LocalPhoneNumber_019e7567-4ee6-78e4-bee8-9399da2baf93" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e7567-4ee6-7f17-9047-73505d02128c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_CityAreaCode_019e7567-4ee6-7f17-9047-73505d02128c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019e7567-4ee6-7aa0-808c-298db0a94721" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_WrittenCommunications_019e7567-4ee6-7aa0-808c-298db0a94721" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019e7567-4ee6-7fe2-bbba-530279be4da6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_SolicitingMaterial_019e7567-4ee6-7fe2-bbba-530279be4da6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019e7567-4ee6-74b9-a497-b260ac7627d4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_PreCommencementTenderOffer_019e7567-4ee6-74b9-a497-b260ac7627d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019e7567-4ee6-76a8-96a9-1133c676bcb9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019e7567-4ee6-76a8-96a9-1133c676bcb9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e7567-4ee6-76b9-9841-9efd6fbf3e42" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e7567-4ee6-76b9-9841-9efd6fbf3e42" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e7567-4ee6-7785-a1ef-3b7bd9ad8e8c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_Security12bTitle_019e7567-4ee6-7785-a1ef-3b7bd9ad8e8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e7567-4ee6-7da5-a453-072917cae988" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_TradingSymbol_019e7567-4ee6-7da5-a453-072917cae988" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e7567-4ee6-7301-91b4-3ebb95369178" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_SecurityExchangeName_019e7567-4ee6-7301-91b4-3ebb95369178" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e7567-4ee6-782a-af19-67a44ec811bb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_DocumentType_019e7567-4ee6-782a-af19-67a44ec811bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e7567-4ee6-7447-8511-96c7f6909911" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_EntityCentralIndexKey_019e7567-4ee6-7447-8511-96c7f6909911" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e7567-4ee6-71bc-9554-b4c4bfd7c9e4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_019e7567-4ee6-7abc-9f0f-ebe94680d458" xlink:to="loc_dei_AmendmentFlag_019e7567-4ee6-71bc-9554-b4c4bfd7c9e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
