content: <?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>
            <!-- Field: Pseudo-Tag; ID: Name; Data: BIEDERMAN CHARLES -->
            <cik>0001187919</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000712770</issuerCik>
        <issuerName>ONE LIBERTY PROPERTIES INC</issuerName>
        <secFileNumber>001-09279</secFileNumber>
        <issuerAddress>
          <com:street1>60 Cutter Mill Road, Suite 303</com:street1>
          <com:city>Great Neck</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>11021</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>516-466-3100</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Charles and/or Regina Biederman</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>C. Biederman is director, Regina his wife</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>J.P. Morgan Securities</name>
          <address>
            <com:street1>1455 16th st.,</com:street1>
            <com:street2>Suite 407</com:street2>
            <com:city>Denver,</com:city>
            <com:stateOrCountry>CO</com:stateOrCountry>
            <com:zipCode>80202</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>10000</noOfUnitsSold>
        <aggregateMarketValue>207000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>21326296</noOfUnitsOutstanding>
        <approxSaleDate>06/14/2023</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>05/12/2015</acquiredDate>
        <natureOfAcquisitionTransaction>Open market purchase</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Open market</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2000</amountOfSecuritiesAcquired>
        <paymentDate>05/12/2015</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/18/2018</acquiredDate>
        <natureOfAcquisitionTransaction>Stock award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3200</amountOfSecuritiesAcquired>
        <paymentDate>01/18/2018</paymentDate>
        <natureOfPayment>Services</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/09/2017</acquiredDate>
        <natureOfAcquisitionTransaction>Stock award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3000</amountOfSecuritiesAcquired>
        <paymentDate>01/09/2017</paymentDate>
        <natureOfPayment>Services</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/15/2016</acquiredDate>
        <natureOfAcquisitionTransaction>Stock award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1800</amountOfSecuritiesAcquired>
        <paymentDate>01/05/2016</paymentDate>
        <natureOfPayment>Services</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <remarks>The market value in 3(d) is based on the closing stock price on or about June 13, 2023. The shares sold by Mr. Biederman were received by him as restricted stock for serving as a director and vested after a five-year holding period. The date of payment reflected for the shares issued for services is the grant date of the restricted stock. The shares sold by Regina Biederman were purchased by her on or about 5/12/15 in the open market. The shares reported in Table I have all been sold.</remarks>
      <noticeSignature>
        <noticeDate>10/02/2023</noticeDate>
        <signature>/s/ Charles Biederman</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4966}]
text: 144
  0001187919
  XXXXXXXX
  LIVE
  0000712770
  ONE LIBERTY PROPERTIES INC
  001-09279
  60 Cutter Mill Road, Suite 303
  Great Neck
  NY
  11021
  516-466-3100
  Charles and/or Regina Biederman
  C. Biederman is director, Regina his wife
  Common
  J.P. Morgan Securities
  1455 16th st.,
  Suite 407
  Denver,
  CO
  80202
  10000
  207000.00
  21326296
  06/14/2023
  NYSE
  Common
  05/12/2015
  Open market purchase
  Open market
  N
  2000
  05/12/2015
  Cash
  Common
  01/18/2018
  Stock award
  Issuer
  N
  3200
  01/18/2018
  Services
  Common
  01/09/2017
  Stock award
  Issuer
  N
  3000
  01/09/2017
  Services
  Common
  01/15/2016
  Stock award
  Issuer
  N
  1800
  01/05/2016
  Services
  Y
  The market value in 3(d) is based on the closing stock price on or about June 13, 2023. The shares sold by Mr. Biederman were received by him as restricted stock for serving as a director and vested after a five-year holding period. The date of payment reflected for the shares issued for services is the grant date of the restricted stock. The shares sold by Regina Biederman were purchased by her on or about 5/12/15 in the open market. The shares reported in Table I have all been sold.
  10/02/2023
  /s/ Charles Biederman