Barkley (formerly Barkley Evergreen & Partners), founded in 1964, is a Kansas City, Missouri, United States, based full-service advertising agency known for their work on Sonic Drive-In Restaurants [citation needed],[1] Planet Fitness,[2] and Dairy Queen.

[2] Barkley is the largest independent advertising agency in Kansas City, and the seventh-largest independent advertising agency in the U.S.[3] Jeff King is the current CEO.

[4] Barkley acquired Pittsburgh-based Ripple Effects Interactive in March 2008.

[5] Barkley announced the acquisition of Callahan, a Lawrence-based ad agency.

[6] In September that same year, Keystone Capital, Inc. announced its investment in Barkley, the Kansas City metro area’s third-largest advertising agency.