Thomas Frances Wilson (born April 15, 1959) is an American actor born in Philadelphia, Pennsylvania. He studied international politics at Arizona State University.

While in high school, he was involved in dramatic arts, president of the debate team, and tuba player in the high school band. Wilson's first 'real' stage experiences were as a standup comedian, while studying at the American Academy of Dramatic Arts .

His breakthrough is considered to be: Back to the Future (1985). In that movie he played a menace to society: Biff Tannen. Wilson's talents as a comedian and an actor combined to make Biff a character people loved to hate. When Back to the Future became a trilogy, he was naturally asked to perform in these sequels too as Biff, Biff's grandson Griff and Biff's great-great-grandfather Buford 'Mad Dog' Tannen.

He later went to co-star in a CD-ROM computer game with Mark Hamill. This game called: (1994), was an entry in the Wing Commander series of games. It was extremely popular at the time. In the game Wilson played Major Todd "Maniac" Marshall, one of the pilots of a starship under fire. In this game his character again is very unpopular. He also starred in the sequel to that game , which was even hailed more than its predecessor and is considered by some to be a classic computer game.

Currently, Wilson is mostly involved in lending his voice to animated productions such as Disney's: Atlantis: Milo's Return (2003).

Most recently Wilson appeared on the screen in a movie called: (2003), a mockumentary.