<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001256402</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
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    <issuerInfo>
      <issuerCik>0000056047</issuerCik>
      <issuerName>KIRBY CORP</issuerName>
      <secFileNumber>001-07615</secFileNumber>
      <issuerAddress>
        <com:street1>55 WAUGH DRIVE SUITE 1000</com:street1>
        <com:city>HOUSTON</com:city>
        <com:stateOrCountry>TX</com:stateOrCountry>
        <com:zipCode>77007</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>7134351000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>STEWART RICHARD ROSS</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corporation</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>3000</noOfUnitsSold>
      <aggregateMarketValue>257460.00</aggregateMarketValue>
      <noOfUnitsOutstanding>59500000</noOfUnitsOutstanding>
      <approxSaleDate>09/12/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/02/2016</acquiredDate>
      <natureOfAcquisitionTransaction>RSU</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1775</amountOfSecuritiesAcquired>
      <paymentDate>11/02/2016</paymentDate>
      <natureOfPayment>Employee Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/31/2018</acquiredDate>
      <natureOfAcquisitionTransaction>RSU</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1225</amountOfSecuritiesAcquired>
      <paymentDate>10/31/2018</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Richard Stewart</name>
        <address>
          <com:street1>6428 Brompton</com:street1>
          <com:city>Houston</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/22/2023</saleDate>
      <amountOfSecuritiesSold>1500</amountOfSecuritiesSold>
      <grossProceeds>119653.97</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Richard Stewart</name>
        <address>
          <com:street1>6428 Brompton</com:street1>
          <com:city>Houston</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>09/01/2023</saleDate>
      <amountOfSecuritiesSold>3500</amountOfSecuritiesSold>
      <grossProceeds>287890.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Registration Stewart Family Trust</remarks>
    <noticeSignature>
      <noticeDate>09/12/2023</noticeDate>
      <signature>Richard Stewart</signature>
    </noticeSignature>
  </formData>
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144
0001256402
XXXXXXXX
LIVE
0000056047
KIRBY CORP
001-07615
55 WAUGH DRIVE SUITE 1000
HOUSTON
TX
77007
7134351000
STEWART RICHARD ROSS
Director
Common
Charles Schwab Corporation
3000 Schwab Way
Westlake
TX
76262
3000
257460.00
59500000
09/12/2023
NYSE
Common
11/02/2016
RSU
Issuer
N
1775
11/02/2016
Employee Compensation
Common
10/31/2018
RSU
Issuer
N
1225
10/31/2018
Equity Compensation
N
Richard Stewart
6428 Brompton
Houston
TX
77005
Common
08/22/2023
1500
119653.97
Richard Stewart
6428 Brompton
Houston
TX
77005
Common
09/01/2023
3500
287890.00
Registration Stewart Family Trust
09/12/2023
Richard Stewart