NEW YORK, May 21, 2013 /PRNewswire/ -- The Board of Directors of Omnicom Group Inc. (NYSE:OMC) declared a quarterly dividend of 40 cents per outstanding share of the corporation's common stock. The dividend is payable on July 11, 2013 to Omnicom Group common shareholders of record at the close of business on June 14, 2013. Omnicom Group Inc. (NYSE: OMC) ( www.omnicomgroup.com) is a leading global marketing and corporate communications company. Omnicom's branded networks and numerous specialty firms provide advertising, strategic media planning and buying, digital and interactive marketing, direct and promotional marketing, public relations and other specialty communications services to over 5,000 clients in more than 100 countries. SOURCE Omnicom Group Inc.