<SEC-DOCUMENT>0001144204-18-045301.txt : 20180817
<SEC-HEADER>0001144204-18-045301.hdr.sgml : 20180817
<ACCEPTANCE-DATETIME>20180817112312
ACCESSION NUMBER:		0001144204-18-045301
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20180817
DATE AS OF CHANGE:		20180817
EFFECTIVENESS DATE:		20180817

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-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-226895
		FILM NUMBER:		181025107

	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-8
<SEQUENCE>1
<FILENAME>tv501125_s8.htm
<DESCRIPTION>S-8
<TEXT>
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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>As filed with the Securities and Exchange
Commission on August 17, 2018</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Registration No. 333-</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 0; margin-bottom: 0"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>WASHINGTON, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM S-8</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OF 1933</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<P STYLE="font: 14pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>MDC PARTNERS INC.&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Exact Name of Registrant as Specified in
its Charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 35%; text-align: center"><B>Canada</B></TD>
    <TD STYLE="width: 30%; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 35%; text-align: center"><B>98-0364441</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">(State or Other Jurisdiction of</TD>
    <TD STYLE="text-align: center; text-indent: 19.8pt">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;(I.R.S. Employer Identification Number)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">Incorporation or Organization)</TD>
    <TD STYLE="text-align: center; text-indent: 19.8pt">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>745 Fifth Avenue, 19<SUP>th</SUP> Floor,
New York, NY 10151</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(646) 429-1800&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Address of Registrant&rsquo;s Principal
Executive Offices and Zip Code)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>MDC PARTNERS INC.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>2016 STOCK INCENTIVE PLAN (AS AMENDED
ON JUNE 6, 2018)&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Full Title of the Plan)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Mitchell Gendel, Esq.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>General Counsel</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>745 Fifth Avenue, 19<FONT STYLE="font-size: 10pt"><SUP>th</SUP></FONT>
Floor, New York, NY 10151</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(646) 429-1803</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Name, Address, and Telephone Number, Including
Area Code, of Agent for Service)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Copies of all communications to:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; text-align: center; padding: 0; text-indent: 0">Ris&euml; Norman</TD>
    <TD STYLE="width: 50%; text-align: center; padding: 0; text-indent: 0">Dee Rajpal</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Simpson Thacher &amp; Bartlett LLP</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Stikeman Elliot LLP</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">425 Lexington Avenue</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">5300 Commerce Court West, 199 Bay Street</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">New York, NY&nbsp;&nbsp;10017</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Toronto, ON&nbsp;&nbsp;M5L 1B9</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">&nbsp;(212) 455-2000</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">&nbsp;(416) 869-5500</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Indicate by check mark whether the registrant
is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth
company. See the definitions of &ldquo;large accelerated filer,&rdquo; &ldquo;accelerated filer,&rdquo; &ldquo;smaller reporting
company,&rdquo; and &ldquo;emerging growth company&rdquo; in Rule 12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 22%; padding: 0; text-indent: 0">Large accelerated filer</TD>
    <TD STYLE="width: 37%; padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">&#120;</FONT></FONT></TD>
    <TD STYLE="width: 31%; padding: 0; text-indent: 0">Accelerated filer</TD>
    <TD STYLE="width: 10%; padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">Non-accelerated filer</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0">Smaller Reporting Company</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Emerging Growth Company</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">If an emerging growth company, indicate
by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial
accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. <FONT STYLE="font-family: Wingdings">&uml;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD COLSPAN="19" STYLE="font-size: 10pt; font-weight: bold; text-align: center">CALCULATION&nbsp;OF&nbsp;REGISTRATION&nbsp;FEE</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Name</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>of Plan</B></P></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Title of Securities</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>to be registered</B></P></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Number of Securities to be</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registered (1)</B></P></TD><TD STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Maximum</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Offering Price</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Per Share</B></P></TD><TD STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed&nbsp;Maximum</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Aggregate&nbsp;Offering</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Price</B></P></TD><TD STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Amount of</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registration</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Fee</B></P></TD><TD STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 19%; font-size: 10pt; text-align: left; padding-bottom: 1pt">2016 Stock Incentive Plan (As amended on June 6, 2018)</TD><TD STYLE="width: 2%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 19%; font-size: 10pt; text-align: left; padding-bottom: 1pt">Class A Subordinate Voting Shares, No Par Value</TD><TD STYLE="width: 2%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="width: 11%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: right">1,250,000</TD><TD STYLE="width: 1%; padding-bottom: 1pt; font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: left">$</TD><TD STYLE="width: 11%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: right">4.85</TD><TD STYLE="width: 1%; padding-bottom: 1pt; font-size: 10pt; text-align: left">(2)</TD><TD STYLE="width: 2%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: left">$</TD><TD STYLE="width: 11%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: right">6,062,500</TD><TD STYLE="width: 1%; padding-bottom: 1pt; font-size: 10pt; text-align: left">(2)</TD><TD STYLE="width: 2%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: left">$</TD><TD STYLE="width: 11%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: right">754.78</TD><TD STYLE="width: 1%; padding-bottom: 1pt; font-size: 10pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.25in">(1)</TD>
    <TD>Together with an indeterminate number of additional Class A Subordinate Voting Shares (&ldquo;Shares&rdquo;) that may be necessary to adjust the number of Shares reserved for issuance pursuant to the 2016 Stock Incentive Plan (as amended on June 6, 2018) (the &ldquo;2016 Plan&rdquo;) of MDC Partners Inc. (&ldquo;the Registrant&rdquo;) as a result of stock splits, stock dividends or similar adjustments of the outstanding Shares.</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>(2)</TD>
    <TD>Estimated solely for the purpose of determining the amount of the registration fee in accordance with Rule&nbsp;457(h) and Rule 457(c) under the Securities Act of 1933, as amended (the &ldquo;Securities Act&rdquo;) and based upon the average of the high and low prices of the Shares as reported on the NASDAQ on August 15, 2018.</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXPLANATORY NOTE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">This Registration Statement on Form S-8 is being filed for the
purpose of registering an additional 1,250,000 Class A Subordinate Voting Shares, no par value (the &ldquo;Shares&rdquo;), of MDC
Partners Inc. (the &ldquo;Registrant&rdquo;) pursuant to the MDC Partners Inc. 2016 Stock Incentive Plan (as amended on June 6,
2018) (the &ldquo;Plan&rdquo;). In accordance with Section E of the General Instructions to Form S-8, the contents of the registration
statement on Form S-8 previously filed by Registrant with the Securities and Exchange Commission (the &ldquo;Commission&rdquo;)
on June 27, 2016 (File No. 333-212261) are incorporated by reference into this Registration Statement, except that the provisions
contained in Part II of such previously-filed registration statement are modified as set forth in this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PART I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>INFORMATION REQUIRED IN THE SECTION 10(a)
PROSPECTUS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;The information specified in Item 1 and Item 2 of Part
I of Form S-8 is not filed as part of this Registration Statement in accordance with the provisions of Rule 428 under the Securities
Act of 1933, as amended (the &ldquo;Securities Act&rdquo;) and the introductory note to Part I of Form S-8.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Part II</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 1in; padding: 0; text-indent: 0"><B>Item 3.&nbsp;</B></TD>
    <TD STYLE="padding: 0; text-indent: 0"><B>Incorporation of Documents by Reference.</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">The following documents, which previously
have been filed by the Registrant with the Commission, are incorporated herein by reference and made a part hereof:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Registrant&rsquo;s Annual Report on Form 10-K for the fiscal year ended December 31, 2017, filed by the Registrant with the Commission
on March 1, 2018 (the &ldquo;Annual Report&rdquo;);</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">(ii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Registrant&rsquo;s Quarterly Reports on Form 10-Q filed by the Registrant with the Commission on May 10, 2018 and August 7, 2018;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">(iii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Registrant&rsquo;s Current Reports on Form 8-K filed with the Commission on April 2, 2018, April 26, 2018, June 7, 2018, June 18,
2018 and July 30, 2018 (other than the portions of those reports not deemed to be filed); and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">(iv)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
description of the Registrant&rsquo;s Class A Subordinate Voting Shares contained in the Registrant&rsquo;s Registration Statement
on Form 8-A (File No. 001-13718), filed with the Commission on October 13, 1998, as amended from time to time.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">All reports and other documents filed by
the Registrant pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of this Registration Statement
and prior to the filing of a post-effective amendment hereto, which indicates that all securities offered hereunder have been sold
or which deregisters all securities remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement
and to be a part hereof from the date of filing of such documents.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">For purposes of this Registration Statement,
any statement contained in a document incorporated or deemed to be incorporated herein by reference shall be deemed to be modified
or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently
filed document which also is or is deemed to be incorporated herein by reference modifies or supersedes such statement.&nbsp;&nbsp;Any
statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration
Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">Nothing in this Registration Statement
shall be deemed to incorporate information furnished but not filed with the Commission pursuant to Item 2.02 or Item 7.01 of Form
8-K.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 1in; padding: 0; text-indent: 0"><B>Item 4.&nbsp;&nbsp;</B></TD>
    <TD STYLE="padding: 0; text-indent: 0"><B>Description of Securities.</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Not required to be filed with this Registration Statement in
accordance with Section E of the General Instructions to Form S-8.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 1in; padding: 0; text-indent: 0"><B>Item 5.&nbsp;</B></TD>
    <TD STYLE="padding: 0; text-indent: 0"><B>Interests of Named Experts and Counsel.</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Not required to be filed with this Registration Statement in
accordance with Section E of the General Instructions to Form S-8.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 1in; padding: 0; text-indent: 0"><B>Item 6.&nbsp;&nbsp;</B></TD>
    <TD STYLE="padding: 0; text-indent: 0"><B>Indemnification of Directors and Officers.</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Not required to be filed with this Registration Statement in
accordance with Section E of the General Instructions to Form S-8.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 1in; padding: 0; text-indent: 0"><B>Item&nbsp;7.</B></TD>
    <TD STYLE="padding: 0; text-indent: 0"><B>Exemption From Registration Claimed.</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 1in; padding: 0; text-indent: 0"><B>Item 8.&nbsp;</B></TD>
    <TD STYLE="padding: 0; text-indent: 0"><B>Exhibits.</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">See the Exhibit Index immediately preceding
the signature pages hereto, which is incorporated by reference as if fully set forth herein.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;<B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 1in; padding: 0; text-indent: 0"><B>Item 9.&nbsp;</B></TD>
    <TD STYLE="padding: 0; text-indent: 0"><B>Undertakings.</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Not required to be filed with this Registration
Statement in accordance with Section E of the General Instructions to Form S-8.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;<B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXHIBIT INDEX</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; text-align: center; padding: 0; text-indent: 0"><B>Exhibit No.</B></TD>
    <TD STYLE="width: 2%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 43%; text-align: center; padding: 0; text-indent: 0"><B>Description</B></TD>
    <TD STYLE="width: 2%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 43%; text-align: center; padding: 0; text-indent: 0"><B>Method of Filing</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420414014344/v370125_ex3-1x6.htm" STYLE="-sec-extract: exhibit">4.1</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420414014344/v370125_ex3-1x6.htm" STYLE="-sec-extract: exhibit">Articles of Amalgamation, dated July 1, 2013</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420414014344/v370125_ex3-1x6.htm" STYLE="-sec-extract: exhibit">Incorporated by reference to Exhibit 3.1.6 to the Registrant&rsquo;s Annual Report on Form 10-K filed on March 10, 2014</A></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420417013106/v461212_ex3-1.htm" STYLE="-sec-extract: exhibit">4.2</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420417013106/v461212_ex3-1.htm" STYLE="-sec-extract: exhibit">Articles of Amendment, dated March 7, 2017</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420417013106/v461212_ex3-1.htm" STYLE="-sec-extract: exhibit">Incorporated by reference to Exhibit 3.1 to the Registrant&rsquo;s Current Report on Form 8-K filed on March 7, 2017</A></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420407013120/v068505_ex3-2.htm" STYLE="-sec-extract: exhibit">4.3</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420407013120/v068505_ex3-2.htm" STYLE="-sec-extract: exhibit">General By-law No. 1, as amended on April 29, 2005</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420407013120/v068505_ex3-2.htm" STYLE="-sec-extract: exhibit">Incorporated by reference to Exhibit 3.2 to the Registrant&rsquo;s Annual Report on Form 10-K filed on March 16, 2007</A></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420418033267/tv496038_ex10-1.htm" STYLE="-sec-extract: exhibit">4.4</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420418033267/tv496038_ex10-1.htm" STYLE="-sec-extract: exhibit">MDC Partners Inc. 2016 Stock Incentive Plan (as amended June 6, 2018)</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="http://www.sec.gov/Archives/edgar/data/876883/000114420418033267/tv496038_ex10-1.htm" STYLE="-sec-extract: exhibit">Incorporated by reference to Exhibit 10.1 to the Registrant&rsquo;s Current Report on Form 8-K filed on June 7, 2018</A></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0"><A HREF="tv501125_ex5-1.htm" STYLE="-sec-extract: exhibit">5.1</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="tv501125_ex5-1.htm" STYLE="-sec-extract: exhibit">Opinion of Stikeman Elliott LLP, as to the legality of the Shares registered hereunder</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="tv501125_ex5-1.htm" STYLE="-sec-extract: exhibit">Filed herewith</A></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0"><A HREF="tv501125_ex23-1.htm" STYLE="-sec-extract: exhibit">23.1</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="tv501125_ex23-1.htm" STYLE="-sec-extract: exhibit">Consent of BDO USA, LLP, Independent Registered Public Accounting Firm</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="tv501125_ex23-1.htm" STYLE="-sec-extract: exhibit">Filed herewith</A></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; padding: 0; text-indent: 0"><A HREF="#poa" STYLE="-sec-extract: exhibit">24.1</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="#poa" STYLE="-sec-extract: exhibit">Power of Attorney</A></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><A HREF="#poa" STYLE="-sec-extract: exhibit">Included on the signature page to this Registration Statement </A></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.55in">Pursuant to the requirements of the Securities
Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form
S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in
the City of New York, State of New York, on the 17th day of August, 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding: 0; text-indent: 0"><B>MDC PARTNERS INC.</B></TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">By:</TD>
    <TD COLSPAN="2" STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ Scott L. Kauffman </TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 57%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 3%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0">Name:</TD>
    <TD STYLE="width: 30%; padding: 0; text-indent: 0">Scott. L Kauffman</TD>
    <TD STYLE="width: 5%; padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">Title:</TD>
    <TD STYLE="padding: 0; text-indent: 0">Chairman and Chief Executive Officer</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><A NAME="poa"></A>POWER OF ATTORNEY</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.55in">Each person whose
signature appears below on this Registration Statement hereby constitutes and appoints David Doft and Mitchell Gendel with full
power to act as his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for
him or her and in his or her name, place and stead, in any and all capacities (unless revoked in writing) to sign any and all amendments
(including post-effective amendments thereto) to this Registration Statement to which this power of attorney is attached, and to
file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission,
granting to such attorney-in-fact and agents full power and authority to do and perform each and every act and thing requisite
and necessary to be done in connection therewith, as full to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that such attorney-in-fact and agents, or their or his or her substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.55in">This Power of Attorney
may be executed in multiple counterparts, each of which shall be deemed an original, but which taken together shall constitute
one instrument.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.55in">Pursuant to the requirements
of the Securities Act, this Form S-8 Registration Statement has been signed by the following persons in the capacities and on the
dates indicated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 32%; border-bottom: black 1pt solid; padding: 0; text-align: center; text-indent: 0"><B>Signature</B></TD>
    <TD STYLE="width: 2%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 32%; border-bottom: black 1pt solid; padding: 0; text-align: center; text-indent: 0"><B>Title</B></TD>
    <TD STYLE="width: 2%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 32%; border-bottom: black 1pt solid; padding: 0; text-align: center; text-indent: 0"><B>Date</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ Scott L Kauffman</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Chairman and Chief Executive</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Scott L. Kauffman)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Officer </TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ David Doft</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Chief Financial Officer </TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(David Doft)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding: 0; text-indent: 0">/s/ Vincenzo DiMaggio&#9;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Chief Accounting Officer</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Vincenzo DiMaggio)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ Clare Copeland</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Director</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Clare Copeland)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding: 0; text-indent: 0">/s/ Bradley Gross</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Director</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Bradley Gross)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding: 0; text-indent: 0">/s/ Daniel Goldberg</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Director</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Daniel Goldberg)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ Larry Kramer</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Director</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Larry Kramer)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ Anne Marie O&rsquo;Donovan</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Director</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Anne Marie O&rsquo;Donovan)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding: 0; text-indent: 0">/s/ Desiree Rogers</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Director</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Desiree Rogers)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ Irwin D. Simon</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Presiding Director</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Irwin D. Simon)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding: 0; text-indent: 0">/s/ Mitchell Gendel</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">Authorized U.S. Representative</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="text-align: center; padding: 0; text-indent: 0">August 17, 2018</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">(Mitchell Gendel, Esq.)</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
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<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>tv501125_ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0; text-align: right"><B>Exhibit 5.1</B></P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD STYLE="width: 2in"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><B>Stikeman Elliott LLP</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">Barristers &amp; Solicitors</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">5300 Commerce Court West</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">199 Bay Street</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">Toronto, ON Canada M5L 1B9</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">Main: 416 869 5500</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">Fax: 416 947 0866</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">www.stikeman.com</P>

</TD></TR>
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<P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">August 17, 2018 &nbsp;</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The Board of Directors of MDC Partners Inc.&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">725 Fifth Avenue, 19<SUP>th</SUP> Floor&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, NY 10151&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">United States&#9;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dear Sirs and Mesdames:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TD STYLE="width: 0.25in">Re:</TD><TD STYLE="padding-right: 31.5pt">MDC Partners Inc. &ndash; Registration Statement on Form S-8 re 2016 Stock Incentive Plan</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">We have acted as Canadian
counsel for MDC Partners Inc. (the &ldquo;<B>Company</B>&rdquo;), a company incorporated under the Canada Business Corporations
Act, in connection with the Registration Statement on Form S-8 (the &ldquo;<B>Registration Statement</B>&rdquo;) being filed by
the Company under the Securities Act of 1933, as amended (the &ldquo;<B>Securities Act</B>&rdquo;), with respect to an additional
1,250,000 class A subordinate voting shares of the Company (the &ldquo;<B>Plan Shares</B>&rdquo;), which may be issued by the Company
pursuant to the Company&rsquo;s 2016 Stock Incentive Plan (the &ldquo;<B>Plan</B>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-weight: normal"><I><U>Documentary Review </U></I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">We have examined copies of the following
documents:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0.25in">(a)</TD><TD STYLE="text-align: justify">the Plan; and</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0.25in">(b)</TD><TD STYLE="text-align: justify">the Registration Statement.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-weight: normal"><I><U>Reliances </U></I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">For the purposes of
this opinion, we have also examined and relied upon originals or copies of the following documents (collectively, the &ldquo;<B>Corporate
Documents</B>&rdquo;):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(a)</TD><TD STYLE="text-align: justify">a certificate of an officer of the Company dated the date hereof (the &ldquo;<B>Officer&rsquo;s
Certificate</B>&rdquo;) certifying certain matters including, among other things:</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.25in"></TD><TD STYLE="width: 0.25in">(i)</TD><TD STYLE="text-align: justify">the articles of the Company (the &ldquo;<FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Articles</B></FONT>&rdquo;);</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.25in"></TD><TD STYLE="width: 0.25in">(ii)</TD><TD STYLE="text-align: justify">the by-laws of the Company (the &ldquo;<FONT STYLE="font-family: Times New Roman, Times, Serif"><B>By-Laws</B></FONT>&rdquo;);
and</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.25in"></TD><TD STYLE="width: 0.25in">(iii)</TD><TD STYLE="text-align: justify">the resolutions of the board of directors of the Company relating to the Registration Statement
and passed on July 26, 2018; and</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(b)</TD><TD STYLE="text-align: justify">a certificate of compliance dated the date hereof issued pursuant to the <I>Canada Business Corporations
Act</I> relating to the Company.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">A duplicate copy of
the Officer&rsquo;s Certificate is delivered contemporaneously with this opinion. We have relied upon the Corporate Documents without
independent investigation of the matters provided for in them for the purpose of providing our opinion expressed below. We have
not conducted a review of the minute books of the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-weight: normal"><I><U>Assumptions</U></I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">In examining all documents and in providing
our opinion below we have assumed that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(a)</TD><TD STYLE="text-align: justify">all individuals had the requisite legal capacity;</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(b)</TD><TD STYLE="text-align: justify">all signatures are genuine;</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(c)</TD><TD STYLE="text-align: justify">all documents submitted to us as originals are complete and authentic and all photostatic, certified,
telecopied, notarial or other copies conform to the originals;</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(d)</TD><TD STYLE="text-align: justify">all facts set forth in the official public records, certificates and documents supplied by public
officials or otherwise conveyed to us by public officials are complete, true and accurate as of the date hereof; and</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(e)</TD><TD STYLE="text-align: justify">all facts set forth in the Officer&rsquo;s Certificate are complete, true and accurate.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-weight: normal"><I><U>Jurisdiction and Effective
Date</U></I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Our opinion below is expressed only with
respect to the laws of the province of Ontario and of the laws of Canada applicable therein and is being furnished in accordance
with the requirements of Item 601(b)(5). Any reference to the laws of Ontario includes the laws of Canada that apply in Ontario.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Our opinion is expressed
with respect to the laws of Ontario in effect on the date of this opinion and we do not accept any responsibility to update this
opinion, take into account or inform the addressees, or any other person authorized to rely on this opinion, of any changes in
law, facts or other developments subsequent to this date that do or may affect the opinion we express, nor do we have any obligation
to advise you of any other change in any matter addressed in this opinion or to consider whether it would be appropriate for any
other person other than the addressees to rely on our opinion.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-weight: normal"><I><U>Opinion </U></I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Based upon and subject
to the foregoing and to the qualifications set forth herein, we are of the opinion that upon due exercise or settlement, as applicable,
of equity-based awards properly granted under the Plan in accordance with the terms of, and subject to the conditions contained
in the Plan, including, if applicable, receipt by the Company in full of the exercise price relating to such awards, the underlying
Plan Shares will be validly issued as fully paid and non-assessable shares of the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-weight: normal"><I><U>Limitation</U></I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">We hereby consent to
the filing of this opinion as an exhibit to the Registration Statement and to the use of our name in the Registration Statement.
In giving this consent, we do not thereby admit that we are included in the category of persons whose consent is required under
Section 7 of the Securities Act, or the rules and regulations of the Securities and Exchange Commission promulgated thereunder.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This opinion is rendered
solely to the addressee hereof in connection with the Registration Statement on Form S-8 and we render no opinion, whether by implication
or otherwise, as to any other matters relating to the Company, the Registration Statement or the Plan Shares. It may not be quoted,
in whole or in part, or otherwise referred to or used for any purpose without our prior written consent.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 5in"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 65%; padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 35%; padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">Yours truly,</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><I>/s/ Stikeman Elliott LLP</I></TD></TR>
</TABLE>


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<DESCRIPTION>EXHIBIT 23.1
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<P STYLE="margin: 0; text-align: right"><B>Exhibit 23.1</B></P>

<P STYLE="margin: 0; text-align: right">&nbsp;</P>

<P STYLE="margin: 0; text-align: left"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; color: fuchsia">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; color: fuchsia"><FONT STYLE="color: Black"><B>&nbsp;</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; color: fuchsia"><FONT STYLE="color: Black"><U>Consent
of Independent Registered Public Accounting Firm</U></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">MDC
Partners Inc.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">New
York, New York</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">We
hereby consent to the incorporation by reference in the Prospectus constituting a part of this Registration Statement of our reports
dated March 1, 2018, relating to the consolidated financial statements, the effectiveness of MDC Partner Inc.&rsquo;s internal
control over financial reporting and schedules of MDC Partners Inc. appearing in the Company&rsquo;s Annual Report on Form 10-K
for the year ended December 31, 2017.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">/s/BDO
USA, LLP</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">New
York, New York</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; color: fuchsia"><FONT STYLE="color: Black">August
17, 2018</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; color: fuchsia"><FONT STYLE="color: Black">&nbsp;</FONT></P>



<P STYLE="margin: 0; text-align: left">&nbsp;</P>

<P STYLE="margin: 0; text-align: left"></P>

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