Tom Varner (born June 17, 1957 in Morristown, New Jersey, United States) is an American jazz horn (French horn) player and composer.
Varner grew up in Millburn, New Jersey, and studied piano in his youth with Capitola Dickerson of Summit, New Jersey. He holds a B.M. degree (1979) from the New England Conservatory of Music, where he studied jazz improvisation and composition with Ran Blake, George Russell, and Jaki Byard, and horn with Thomas Newell. He also studied briefly in 1976 with jazz horn pioneer Julius Watkins. Varner also holds an M.A. (2005) from the City College of New York, where he studied with Jim McNeely, Scott Reeves, and John Patitucci.