James Thomas Patrick 'J.T.' Walsh (September 28, 1943 - February 27, 1998) was an American actor. Known for his versatility and ability to play a wide range of characters, he had a successful career in film, television, and theater.

Before becoming an actor, Walsh worked as a stagehand and set builder. He made his on-screen debut in the early 1980s and quickly gained recognition for his convincing performances, often portraying authority figures or antagonists.