House’s best friend Wilson in House M.D. is named James Wilson.
Dr. James Evan Wilson is an oncologist at Princeton-Plainsboro Teaching Hospital and one of the show’s most important recurring characters. Robert Sean Leonard played Wilson throughout the series. His compassionate approach to patients contrasts with House’s abrasive behavior, but the two characters share a long and complicated friendship.
Wilson often acts as House’s moral counterweight. He challenges House’s decisions, helps interpret his motives, and remains involved even when House’s conduct damages their relationship. Their friendship is central to several major storylines, including Wilson’s relationships, professional conflicts, and the final season’s focus on his health.
Viewers may confuse Wilson’s first name with the actor’s name or remember only his surname because characters usually address him as “Wilson.” His full character name is James Evan Wilson, while the actor who portrays him is Robert Sean Leonard.