SecProbe.io

Mail Stop 3720

March 29, 2016

Mr. Philip J. Angelastro
Chief Financial  Officer
Omnicom Group Inc.
437 Madison Avenue
New York, NY  10022

Re: Omnicom Group, Inc.
 Form 10 -K for Fiscal Year Ended December 31, 201 5
Filed February 9, 2016
File No. 001-10551

Dear  Mr. Angelastro :

We have reviewed your filing and have the following comment.  Please comply with the
following comment in future filings.  Confirm in writing that you will do so and explain to us
how you intend to comply.

Please respond to this comment  within ten busine ss days by providing the requested
information or advis e us as soon as possible when you will respond.  If you  do not believe our
comment appl ies to your facts and circumstances , please tell us why in your response.

After reviewing your response to th is comment, we may have additional comments.

Consolidated Statements of Income , page F -5

1. Please revise your income statement presentation to fully comply with the line  item
requirements of Rule 5 -03 of Regulation S -X.

We urge all persons who are responsible for the accuracy and adequacy of the disclos ure
in the filing to be certain that the filing includes the information the Securities Exchange Act of
1934 and all applicable Exchange Act rules require.   Since the company and its management are
in possession of all facts relating to a company’s disclos ure, they are responsible for the accuracy
and adequacy of the disclosures they have made.

 In responding to our comment, please provide a written statement from the company
acknowledging that:

Mr. Philip J. Angelastro
Omnicom Group Inc.
March 29, 2016
Page 2

  the company is responsible for the adequacy and accuracy o f the disclosure in the filing;

 staff comments or changes to disclosure in response to staff comments do not foreclose
the Commission from taking any action with respect to the filing; and

 the company may not assert staff comments as a defense in any proceeding initiated by
the Commission or any person under the federal securities laws of the United States.

You may contact Kathryn Jacobson, Senior Staff Accountant at  (202)  551-3365  or Robert
S. Littlepage, Accountant Branch Chief at (202) 551 -3361  if you have questions regarding the
comment on the financial statements and related matters.  Please contact Greg ory Dundas,
Attorney -Advisor  at (202) 551 -3436  or me at (202) 551 -3810  with any other questions.

Sincerely,

 /s/ Robert S. Littlepage, for

 Larry Spirgel
Assistant Director
AD Office 11 – Telecommunications