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    <submissionType>13F-HR</submissionType>
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      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <returnCopyFlag>true</returnCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
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      <filer>
        <credentials>
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          <ccc>XXXXXXXX</ccc>
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      <periodOfReport>06-30-2013</periodOfReport>
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    <coverPage>
      <reportCalendarOrQuarter>06-30-2013</reportCalendarOrQuarter>
      <isAmendment>false</isAmendment>
      <filingManager>
        <name>MILLENNIUM MANAGEMENT LLC</name>
        <address>
          <ns1:street1>666 Fifth Ave</ns1:street1>
          <ns1:street2>8th Floor</ns1:street2>
          <ns1:city>New York</ns1:city>
          <ns1:stateOrCountry>NY</ns1:stateOrCountry>
          <ns1:zipCode>10103-0899</ns1:zipCode>
        </address>
      </filingManager>
      <reportType>13F COMBINATION REPORT</reportType>
      <form13FFileNumber>028-10684</form13FFileNumber>
      <otherManagersInfo>
        <otherManager>
          <cik>0001426823</cik>
          <form13FFileNumber>028-12844</form13FFileNumber>
          <name>CATAPULT CAPITAL MANAGEMENT LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001426822</cik>
          <form13FFileNumber>028-12851</form13FFileNumber>
          <name>DECADE CAPITAL MANAGEMENT LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001484068</cik>
          <form13FFileNumber>028-13792</form13FFileNumber>
          <name>GREEN ARROW CAPITAL MANAGEMENT LLC</name>
        </otherManager>
      </otherManagersInfo>
      <provideInfoForInstruction5>Y</provideInfoForInstruction5>
      <additionalInformation>The Institutional Investment Manager filing this report (the "Institutional Investment Manager") and the Other Managers Reporting for this Manager and the Other Included Managers described below are affiliates, and the Other Managers Reporting for this Manager and the Other Included Managers Nos. 2 and 3 are relying advisers (as such term is used in the SEC Staff No-Action Letter addressed to the American Bar Association, Business Law Section, dated January 18, 2012) of the Institutional Investment Manager filing this report. Each of the holdings described below is held directly or indirectly by Millennium Partners, L.P. or one or more affiliated investment funds that invest a portion of their assets in Millennium Partners, L.P.   Certain holdings included in this report involve discretion exercised by other relying advisers of the Institutional Investment Manager.  In addition, certain holdings included in this report are reported in the holdings reports of other institutional investment managers that may be deemed to have investment discretion over such holdings, but on whose behalf the Institutional Investment Manager is not filing this report.</additionalInformation>
    </coverPage>
    <signatureBlock>
      <name>Robert Williams</name>
      <title>Chief Financial Officer</title>
      <phone>212-841-4100</phone>
      <signature>/s/ Robert Williams</signature>
      <city>New York</city>
      <stateOrCountry>NY</stateOrCountry>
      <signatureDate>08-14-2013</signatureDate>
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      <tableEntryTotal>2944</tableEntryTotal>
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            <form13FFileNumber>028-12506</form13FFileNumber>
            <name>ENGLANDER ISRAEL A</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>2</sequenceNumber>
          <otherManager>
            <cik>0001426821</cik>
            <form13FFileNumber>028-12854</form13FFileNumber>
            <name>MILLENNIUM INTERNATIONAL MANAGEMENT LP</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>3</sequenceNumber>
          <otherManager>
            <cik>0001426818</cik>
            <form13FFileNumber>028-12858</form13FFileNumber>
            <name>MILLENNIUM GLOBAL ESTATE GP LLC</name>
          </otherManager>
        </otherManager2>
      </otherManagers2Info>
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