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      <filer>
        <filerCredentials>
          <cik>0001198848</cik>
          <ccc>XXXXXXXX</ccc>
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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0000749251</issuerCik>
      <issuerName>GARTNER INC</issuerName>
      <secFileNumber>001-14443</secFileNumber>
      <issuerAddress>
        <com:street1>56 TOP GALLANT RD</com:street1>
        <com:street2>P O BOX 10212</com:street2>
        <com:city>STAMFORD</com:city>
        <com:stateOrCountry>CT</com:stateOrCountry>
        <com:zipCode>06902-7700</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>2039640096</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>DYKSTRA KAREN E</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab &amp; Co., Inc.</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>1800</noOfUnitsSold>
      <aggregateMarketValue>893088.00</aggregateMarketValue>
      <noOfUnitsOutstanding>77059514</noOfUnitsOutstanding>
      <approxSaleDate>08/01/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>06/22/2023</acquiredDate>
      <natureOfAcquisitionTransaction>RSU Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1800</amountOfSecuritiesAcquired>
      <paymentDate>06/22/2023</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>08/01/2024</noticeDate>
      <signature>Karen Dykstra</signature>
    </noticeSignature>
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144
0001198848
XXXXXXXX
LIVE
0000749251
GARTNER INC
001-14443
56 TOP GALLANT RD
P O BOX 10212
STAMFORD
CT
06902-7700
2039640096
DYKSTRA KAREN E
Director
Common Stock
Charles Schwab & Co., Inc.
3000 Schwab Way
Westlake
TX
76262
1800
893088.00
77059514
08/01/2024
NYSE
Common
06/22/2023
RSU Vesting
Issuer
N
1800
06/22/2023
N/A
Y
08/01/2024
Karen Dykstra