<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/seventeenafiler" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>X-17A-5</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <filerCik>0000924186</filerCik>
          <filerCcc>XXXXXXXX</filerCcc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <returnCopyFlag>true</returnCopyFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
      </flags>
    </filerInfo>
  </headerData>
  <formData>
    <submissionInformation>
      <periodBegin>01-01-2023</periodBegin>
      <periodEnd>12-31-2023</periodEnd>
      <typeOfRegistrant>
        <typeOfSDRegistrant>Security-based swap dealer</typeOfSDRegistrant>
      </typeOfRegistrant>
      <subTypeOfSDRegistrant>Filing pursuant to a Commission substituted compliance order</subTypeOfSDRegistrant>
      <materialWeakness>N</materialWeakness>
    </submissionInformation>
    <registrantIdentification>
      <brokerDealerName>MORGAN STANLEY &amp; CO INTERNATIONAL PLC</brokerDealerName>
      <businessAddress>
        <com:street1>25 CABOT SQUARE CANARY WHARF</com:street1>
        <com:city>LONDON</com:city>
        <com:stateOrCountry>X0</com:stateOrCountry>
        <com:zipCode>E144QA</com:zipCode>
      </businessAddress>
      <contactPersonName>Hereward Taylor</contactPersonName>
      <contactPersonPhoneNumber>00442076777957</contactPersonPhoneNumber>
    </registrantIdentification>
    <accountantIdentification>
      <accountantName>Deloitte LLP</accountantName>
      <accountantAddress>
        <com:street1>2 New Street Square</com:street1>
        <com:city>London</com:city>
        <com:stateOrCountry>X0</com:stateOrCountry>
        <com:zipCode>EC4A 3BZ</com:zipCode>
      </accountantAddress>
      <accountantType>Certified Public Accountant not resident in United States or any of its possessions</accountantType>
    </accountantIdentification>
  </formData>
</edgarSubmission>
