Ketchum Inc. is a global public relations firm, offering marketing, branding, and corporate communications services in the corporate, healthcare, food and beverage, and technology industries. George Ketchum founded the firm as a Pittsburgh-based advertising company in 1923. It later evolved to include a public relations practice. The firm is headquartered in New York City, with auxiliary offices and affiliates in North America, EMEA, Asia Pacific, and Latin America. The agency has been owned by Omnicom Group since 1996.