Tom Stall is a fictional character from the 2005 film A History of Violence, directed by David Cronenberg. He is portrayed by actor Viggo Mortensen and is depicted as a mild-mannered diner owner in a small town. His life takes a dramatic turn when he becomes involved in a violent incident that reveals a hidden past. As the story unfolds, Tom's true identity and history come to light, leading to conflicts with his family and the community. The film explores themes of violence, identity, and the consequences of one's past actions, making Tom Stall a complex and intriguing character.