The Gravy Train, also commonly known as The Dion Brothers, is a 1974 American crime-comedy film directed by Jack Starrett, written by Terrence Malick (under the pseudonym David Whitney) and Bill Kerby, and starring Stacy Keach and Frederic Forrest.

Although initially overlooked by audiences and critics alike, it has in recent years developed a cult following, and has been highly praised by filmmakers such as Quentin Tarantino and David Gordon Green. The film is still relatively obscure and hard to find, as there has never been any official VHS or DVD release.