Tom Doniphon is a fictional character from the classic Western film, "The Man Who Shot Liberty Valance," directed by John Ford. He is portrayed by John Wayne and serves as a rugged, principled rancher in the American West. Doniphon is known for his strong moral code and his willingness to protect his community from threats. In the story, Doniphon plays a crucial role in the life of Ransom Stoddard, a young lawyer portrayed by James Stewart. The character's actions and decisions significantly impact the narrative, highlighting themes of honor, sacrifice, and the complexities of heroism in the Old West.