<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001388153</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000076334</issuerCik>
      <issuerName>PARKER HANNIFIN CORP</issuerName>
      <secFileNumber>001-04982</secFileNumber>
      <issuerAddress>
        <com:street1>6035 PARKLAND BOULEVARD</com:street1>
        <com:city>CLEVELAND</com:city>
        <com:stateOrCountry>OH</com:stateOrCountry>
        <com:zipCode>44124-4141</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>2168963000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Harty Linda S</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corp.</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>1487</noOfUnitsSold>
      <aggregateMarketValue>630906.00</aggregateMarketValue>
      <noOfUnitsOutstanding>128296105</noOfUnitsOutstanding>
      <approxSaleDate>08/07/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/28/2020</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Grants as part of Board Compenasation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>922</amountOfSecuritiesAcquired>
      <paymentDate>10/28/2020</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/27/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Grants as Part of Board Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>565</amountOfSecuritiesAcquired>
      <paymentDate>10/27/2022</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>Client did not pay for the shares. They were Stock Grants</remarks>
    <noticeSignature>
      <noticeDate>08/07/2023</noticeDate>
      <signature>Linda A. Harty</signature>
    </noticeSignature>
  </formData>
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144
0001388153
XXXXXXXX
LIVE
0000076334
PARKER HANNIFIN CORP
001-04982
6035 PARKLAND BOULEVARD
CLEVELAND
OH
44124-4141
2168963000
Harty Linda S
Director
Common
Charles Schwab Corp.
3000 Schwab Way
Westlake
TX
76262
1487
630906.00
128296105
08/07/2023
NYSE
Common
10/28/2020
Stock Grants as part of Board Compenasation
Issuer
N
922
10/28/2020
N/A
Common
10/27/2022
Stock Grants as Part of Board Compensation
Issuer
N
565
10/27/2022
N/A
Y
Client did not pay for the shares. They were Stock Grants
08/07/2023
Linda A. Harty