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  <headerData>
    <submissionType>13F-HR</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <returnCopyFlag>true</returnCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
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      <filer>
        <credentials>
          <cik>0001492262</cik>
          <ccc>XXXXXXXX</ccc>
        </credentials>
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      <periodOfReport>03-31-2018</periodOfReport>
    </filerInfo>
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    <coverPage>
      <reportCalendarOrQuarter>03-31-2018</reportCalendarOrQuarter>
      <filingManager>
        <name>National Planning Corp</name>
        <address>
          <ns1:street1>100 NORTH SEPULVEDA BLVD.</ns1:street1>
          <ns1:street2>SUITE 1800</ns1:street2>
          <ns1:city>EL SEGUNDO</ns1:city>
          <ns1:stateOrCountry>CA</ns1:stateOrCountry>
          <ns1:zipCode>90245</ns1:zipCode>
        </address>
      </filingManager>
      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-13971</form13FFileNumber>
      <provideInfoForInstruction5>Y</provideInfoForInstruction5>
      <additionalInformation>ON AUGUST 15, 2017 NATIONAL PLANNING HOLDINGS, INC., THE PARENT COMPANY OF NATIONAL PLANNING CORPORATION ("NPC"), ANNOUNCED IT HAD ENTERED INTO AN ASSET PURCHASE AGREEMENT WITH LPL FINANCIAL, LLC ("LPL") TO TRANSFER ASSETS ASSOCIATED WITH ITS INDEPENDENT BROKER DEALER NETWORK, INCLUDING THOSE ASSOCIATED WITH NPC. AS A RESULT OF THIS TRANSACTION, NPC BEGAN THE WIND DOWN OF ITS BUSINESS OPERATIONS. AS OF THE DATE OF THIS FILING, ALL ADVISORY PROGRAMS HAVE BEEN TERMINATED, ALL CLIENTS HAVE BEEN NOTIFIED OF THE TERMINATION OF THEIR ASSET MANAGEMENT AGREEMENTS WITH NPC, AND NPC NO LONGER HAS ANY REGULATORY ASSETS UNDER MANAGEMENT, WHICH IS CONSISTENT WITH THE INFORMATION REPORTED ON NPC'S 2018 ANNUAL AMENDMENT TO ITS ADV PART 1A. THIS FORM 13F REPORT IS THE FINAL FORM 13F FILING FOR NPC REFLECTING ZERO DISCRETIONARY POSITIONS. NPC ANTICIPATES FILING AN ADV-W TO WITHDRAW ITS REGISTRATION AS AN SEC REGISTERED INVESTMENT ADVISORY DURING CALENDAR YEAR 2018.</additionalInformation>
    </coverPage>
    <signatureBlock>
      <name>Patricia McCallop</name>
      <title>Chief Compliance Officer</title>
      <phone>310 899-7975</phone>
      <signature>/s/ Patricia McCallop</signature>
      <city>El Segundo</city>
      <stateOrCountry>CA</stateOrCountry>
      <signatureDate>04-16-2018</signatureDate>
    </signatureBlock>
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          <sequenceNumber>1</sequenceNumber>
          <otherManager>
            <cik>0000898419</cik>
            <form13FFileNumber>028-03582</form13FFileNumber>
            <name>PRUDENTIAL PLC</name>
          </otherManager>
        </otherManager2>
      </otherManagers2Info>
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