The Leo Burnett Company is a global advertising agency founded in 1935 by Leo Burnett in Chicago, Illinois. Known for its innovative and impactful advertising campaigns, the agency has created iconic brand characters like the Jolly Green Giant and Tony the Tiger. Over the years, the agency has expanded its services to include digital marketing, brand strategy, and media planning. It is part of the Publicis Groupe, one of the largest advertising and communications organizations in the world, and continues to influence the advertising industry with its creative approach.