The Devil's Rain is a 1975 American supernatural horror film directed by Robert Fuest and starring Ernest Borgnine, Eddie Albert, William Shatner, Tom Skerritt, Ida Lupino and Keenan Wynn, along with John Travolta in his film debut. Church of Satan founder Anton LaVey is credited as the film's technical advisor and appeared in the film playing a minor role, as does his partner Diane Hegarty.

The film was released by Bryanston Distributing Company on August 7, 1975 to negative reviews. In the years since its release, it has developed a cult following. Critic Michael Adams called it "the ultimate cult movie ... It's about a cult, has a cult following, was devised with input from a cult leader, and saw a future superstar indoctrinated into a cult he'd help popularize."