<?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>0001060529</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000315709</issuerCik>
      <issuerName>INTERNATIONAL BANCSHARES CORP</issuerName>
      <secFileNumber>000-09439</secFileNumber>
      <issuerAddress>
        <com:street1>12OO SAN BERNARDO AVE</com:street1>
        <com:street2>PO BOX 1359</com:street2>
        <com:city>LAREDO</com:city>
        <com:stateOrCountry>TX</com:stateOrCountry>
        <com:zipCode>78040-1359</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>9567227611</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>SANCHEZ ANTONIO R JR</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
        <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corporation</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>West Lake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>40000</noOfUnitsSold>
      <aggregateMarketValue>2160000.00</aggregateMarketValue>
      <noOfUnitsOutstanding>62168232</noOfUnitsOutstanding>
      <approxSaleDate>03/11/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/01/1987</acquiredDate>
      <natureOfAcquisitionTransaction>Gift</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Antonio R Sanchez Jr. &amp; Maria Sanchez</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>Y</isGiftTransaction>
      <donarAcquiredDate>02/01/1987</donarAcquiredDate>
      <amountOfSecuritiesAcquired>40000</amountOfSecuritiesAcquired>
      <paymentDate>02/01/1987</paymentDate>
      <natureOfPayment>n/a</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>Sale to take place in 1988 Trust Number Four 4/27/1988 - Antonio Sanchez Jr TTEE Shares gifted to the Trust between 02.01.1987 - 12.31.1988</remarks>
    <noticeSignature>
      <noticeDate>03/11/2024</noticeDate>
      <signature>Antonio Sanchez Jr TTEE, 1988 Trust Number Four 4/27/1988</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
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144
0001060529
XXXXXXXX
LIVE
0000315709
INTERNATIONAL BANCSHARES CORP
000-09439
12OO SAN BERNARDO AVE
PO BOX 1359
LAREDO
TX
78040-1359
9567227611
SANCHEZ ANTONIO R JR
Director
10% Stockholder
Common
Charles Schwab Corporation
3000 Schwab Way
West Lake
TX
76262
40000
2160000.00
62168232
03/11/2024
NASDAQ
Common
02/01/1987
Gift
Antonio R Sanchez Jr. & Maria Sanchez
Y
02/01/1987
40000
02/01/1987
n/a
Y
Sale to take place in 1988 Trust Number Four 4/27/1988 - Antonio Sanchez Jr TTEE Shares gifted to the Trust between 02.01.1987 - 12.31.1988
03/11/2024
Antonio Sanchez Jr TTEE, 1988 Trust Number Four 4/27/1988