<?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>0001483620</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <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>Grzebinski David W</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Fidelity Brokerage Services LLC</name>
        <address>
          <com:street1>900 Salem Street</com:street1>
          <com:city>Smithfield</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>3000</noOfUnitsSold>
      <aggregateMarketValue>215430.00</aggregateMarketValue>
      <noOfUnitsOutstanding>60000000</noOfUnitsOutstanding>
      <approxSaleDate>06/01/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/24/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1129</amountOfSecuritiesAcquired>
      <paymentDate>01/24/2015</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/24/2020</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1871</amountOfSecuritiesAcquired>
      <paymentDate>01/24/2020</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>David W. Grzebinski</name>
        <address>
          <com:street1>55 Waugh Drive</com:street1>
          <com:street2>Suite 1000</com:street2>
          <com:city>Houston</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77007</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>03/01/2023</saleDate>
      <amountOfSecuritiesSold>3000</amountOfSecuritiesSold>
      <grossProceeds>217410.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>David W. Grzebinski</name>
        <address>
          <com:street1>55 Waugh Drive</com:street1>
          <com:street2>Suite 1000</com:street2>
          <com:city>Houston</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77007</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>04/03/2023</saleDate>
      <amountOfSecuritiesSold>2000</amountOfSecuritiesSold>
      <grossProceeds>139300.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>06/01/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>02/17/2023</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David Grzebinski</signature>
    </noticeSignature>
  </formData>
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144
0001483620
XXXXXXXX
LIVE
0000056047
KIRBY CORP
001-07615
55 WAUGH DRIVE SUITE 1000
HOUSTON
TX
77007
7134351000
Grzebinski David W
Officer
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
3000
215430.00
60000000
06/01/2023
NYSE
Common
01/24/2015
Restricted Stock Vesting
Issuer
N
1129
01/24/2015
Compensation
Common
01/24/2020
Restricted Stock Vesting
Issuer
N
1871
01/24/2020
Compensation
N
David W. Grzebinski
55 Waugh Drive
Suite 1000
Houston
TX
77007
Common
03/01/2023
3000
217410.00
David W. Grzebinski
55 Waugh Drive
Suite 1000
Houston
TX
77007
Common
04/03/2023
2000
139300.00
06/01/2023
02/17/2023
/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David Grzebinski