Who is Harry Nilsson (And Why Is Everybody Talkin' About Him?) is a documentary about the American musician Harry Nilsson that premiered at the Santa Barbara International Film Festival in 2006. It was released to theatres in September 2010 and on DVD in October that year.
Writing in Entertainment Weekly, Stephen King said of the film: "Who Is Harry Nilsson is some piece of work, an exploration of the dark side of success that’s hard to watch, and even harder to forget."