<?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>0001219153</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001037540</issuerCik>
      <issuerName>BOSTON PROPERTIES INC</issuerName>
      <secFileNumber>001-13087</secFileNumber>
      <issuerAddress>
        <com:street1>800 BOYLSTON STREET</com:street1>
        <com:street2>SUITE 1900</com:street2>
        <com:city>BOSTON</com:city>
        <com:stateOrCountry>MA</com:stateOrCountry>
        <com:zipCode>02199</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6172363300</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>RITCHEY RAYMOND A</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</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>14150</noOfUnitsSold>
      <aggregateMarketValue>914090.00</aggregateMarketValue>
      <noOfUnitsOutstanding>157010980</noOfUnitsOutstanding>
      <approxSaleDate>03/06/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>03/04/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Redemption of Units in Boston Properties Limited Partnership</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Boston Properties, Inc.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>14150</amountOfSecuritiesAcquired>
      <paymentDate>03/04/2024</paymentDate>
      <natureOfPayment>Redemption of Partnership Interest</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>The shares were acquired upon the redemption by the holder of common units in Boston Properties Limited Partnership (BPLP), of which the Issuer is the general partner. The common units were acquired upon conversion of LTIP units in BPLP issued as long-term incentive compensation pursuant to the Issuer's equity incentive programs.</remarks>
    <noticeSignature>
      <noticeDate>03/06/2024</noticeDate>
      <signature>Raymond A Ritchey</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
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144
0001219153
XXXXXXXX
LIVE
0001037540
BOSTON PROPERTIES INC
001-13087
800 BOYLSTON STREET
SUITE 1900
BOSTON
MA
02199
6172363300
RITCHEY RAYMOND A
Officer
Common
Charles Schwab Corporation
3000 Schwab Way
Westlake
TX
76262
14150
914090.00
157010980
03/06/2024
NYSE
Common
03/04/2023
Redemption of Units in Boston Properties Limited Partnership
Boston Properties, Inc.
N
14150
03/04/2024
Redemption of Partnership Interest
Y
The shares were acquired upon the redemption by the holder of common units in Boston Properties Limited Partnership (BPLP), of which the Issuer is the general partner. The common units were acquired upon conversion of LTIP units in BPLP issued as long-term incentive compensation pursuant to the Issuer's equity incentive programs.
03/06/2024
Raymond A Ritchey