    <SEC-DOCUMENT>0001571049-17-008721-index.html : 20171215
    <SEC-HEADER>0001571049-17-008721.hdr.sgml : 20171215
    <ACCEPTANCE-DATETIME>20171215165452
    ACCESSION NUMBER:		0001571049-17-008721
    CONFORMED SUBMISSION TYPE:	S-3
    PUBLIC DOCUMENT COUNT:		12
    FILED AS OF DATE:		20171215
    DATE AS OF CHANGE:		20171215

    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:		S-3
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-222101
    		FILM NUMBER:		171259608

    	BUSINESS ADDRESS:
    		STREET 1:		745 FIFTH AVENUE, 19TH FLOOR
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10151
    		BUSINESS PHONE:		646 429 1800

    	MAIL ADDRESS:
    		STREET 1:		745 FIFTH AVENUE, 19TH FLOOR
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10151

    	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>S-3
    <SEQUENCE>1
    <FILENAME>tv481207_s3.htm
    <DESCRIPTION>SORM S-3
    <TEXT>
    Document 1 - file: tv481207_s3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-4.5
    <SEQUENCE>2
    <FILENAME>tv481207_ex4-5.htm
    <DESCRIPTION>EXHIBIT 4.5
    <TEXT>
    Document 2 - file: tv481207_ex4-5.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-4.6
    <SEQUENCE>3
    <FILENAME>tv481207_ex4-6.htm
    <DESCRIPTION>EXHIBIT 4.6
    <TEXT>
    Document 3 - file: tv481207_ex4-6.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-5.1
    <SEQUENCE>4
    <FILENAME>tv481207_ex5-1.htm
    <DESCRIPTION>EXHIBIT 5.1
    <TEXT>
    Document 4 - file: tv481207_ex5-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.1
    <SEQUENCE>5
    <FILENAME>tv481207_ex23-1.htm
    <DESCRIPTION>EXHIBIT 23.1
    <TEXT>
    Document 5 - file: tv481207_ex23-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tv481207_ex4-5img1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tv481207_ex4-5img1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>tv481207_ex4-5img2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: tv481207_ex4-5img2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>tv481207_ex4-6img1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: tv481207_ex4-6img1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>tv481207_ex4-6img2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: tv481207_ex4-6img2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>lg_mdcp-pms.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: lg_mdcp-pms.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>tv481207_ex5-1logo.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: tv481207_ex5-1logo.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>tv481207_ex5-1logo1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: tv481207_ex5-1logo1.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>