    <SEC-DOCUMENT>0001104659-21-063909-index.html : 20210510
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    <ACCEPTANCE-DATETIME>20210510163331
    ACCESSION NUMBER:		0001104659-21-063909
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		9
    CONFORMED PERIOD OF REPORT:	20210622
    FILED AS OF DATE:		20210510
    DATE AS OF CHANGE:		20210510

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MDC PARTNERS INC
    		CENTRAL INDEX KEY:			0000876883
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ADVERTISING AGENCIES [7311]
    		IRS NUMBER:				980364441
    		STATE OF INCORPORATION:			A6
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13718
    		FILM NUMBER:		21907765

    	BUSINESS ADDRESS:
    		STREET 1:		ONE WORLD TRADE CENTER, FLOOR 65
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10007
    		BUSINESS PHONE:		646 429 1800

    	MAIL ADDRESS:
    		STREET 1:		ONE WORLD TRADE CENTER, FLOOR 65
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10007

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MDC CORP INC
    		DATE OF NAME CHANGE:	20001204

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MDC COMMUNICATIONS CORP
    		DATE OF NAME CHANGE:	19961028

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MDC CORPORATION
    		DATE OF NAME CHANGE:	19950419
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>tm2115114-1_def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: tm2115114-1_def14a.htm

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    <TYPE>GRAPHIC
    <SEQUENCE>2
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: sg_davidross-bw.jpg

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    <DOCUMENT>
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    <SEQUENCE>3
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: tm2019270d1_bcov.jpg

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    <SEQUENCE>4
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    <DESCRIPTION>GRAPHIC
    <TEXT>
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    <DESCRIPTION>GRAPHIC
    <TEXT>
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    <TYPE>GRAPHIC
    <SEQUENCE>6
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tm2115114d1-px_ballot14c.jpg

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    <SEQUENCE>7
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    <DESCRIPTION>GRAPHIC
    <TEXT>
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    <TYPE>GRAPHIC
    <SEQUENCE>8
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: tm2115114d1-px_ballot34c.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: tm2115114d1-px_ballot44c.jpg

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