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. In the late 1980s and early 1990s, his career took off with notable roles in films like Good Morning, Vietnam (1987), A Few Good Men (1992), and Sling Blade (1996). He had a commanding and intense presence on screen, making him memorable in both lead and supporting roles. He was known for his roles as "quietly sinister white-collar sleazeballs" (quote from Leonard Maltin) in numerous feature films and was described as "everybody's favourite scumbag" by Playboy magazine. He was known for his dedication to authenticity and his meticulous approach to acting. He seamlessly transitioned between genres, showcasing his talent in drama, comedy, and suspense, earning him respect as a character actor. Sadly, his career was cut short when he passed away on February 27, 1998, at the age of 54.