Thomas Francis "Tom" Wilson Jr. (born April 15, 1959) is an American actor, writer, musician, painter, voice-over artist, comedian, and podcaster. He is best known for playing Biff Tannen, Griff Tannen and Buford "Mad Dog" Tannen in the Back to the Future trilogy.

For Disney, he played Melvin in That Darn Cat, Matt Bluestone in Gargoyles, Starbuck in 101 Dalmatians: The SeriesAshtin Carnaby in Atlantis: Milo's Return, Buster in Buzz Lightyear of Star Command, Coach Bronson in Pepper Ann, Truck Driver in Higglytown Heroes, and Agent Whitman in K.C. Undercover.