<?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>893148.00</aggregateMarketValue>
      <noOfUnitsOutstanding>157010980</noOfUnitsOutstanding>
      <approxSaleDate>03/07/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>03/06/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Redemption of Units in Boston Properties Limited Partnership</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Boston Properties, Inc.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>14150</amountOfSecuritiesAcquired>
      <paymentDate>03/06/2024</paymentDate>
      <natureOfPayment>Redemption of Partnership Interest</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Raymond A Ritchey</name>
        <address>
          <com:street1>2200 Pennsylvania Ave NW</com:street1>
          <com:street2>Suite 200W</com:street2>
          <com:city>Washington</com:city>
          <com:stateOrCountry>DC</com:stateOrCountry>
          <com:zipCode>20037</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>03/06/2024</saleDate>
      <amountOfSecuritiesSold>14150</amountOfSecuritiesSold>
      <grossProceeds>889114.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <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.
Registration - Raymond A Ritchey 2008 Family Trust - Anne L Ritchey, Trustee (Raymond A Ritchey, Grantor)</remarks>
    <noticeSignature>
      <noticeDate>03/07/2024</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
893148.00
157010980
03/07/2024
NYSE
Common
03/06/2024
Redemption of Units in Boston Properties Limited Partnership
Boston Properties, Inc.
N
14150
03/06/2024
Redemption of Partnership Interest
N
Raymond A Ritchey
2200 Pennsylvania Ave NW
Suite 200W
Washington
DC
20037
Common
03/06/2024
14150
889114.00
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.
Registration - Raymond A Ritchey 2008 Family Trust - Anne L Ritchey, Trustee (Raymond A Ritchey, Grantor)
03/07/2024
Raymond A Ritchey