Masters of the Universe (stylized as Masters of the Universe: The Motion Picture) is a 1987 American superhero film based on the Masters of the Universe franchise by Mattel. The film was directed by Gary Goddard, produced by Yoram Globus and Menahem Golan, and written by David Odell. It stars Dolph Lundgren, Frank Langella, Jon Cypher, Chelsea Field, Billy Barty, Courteney Cox, Robert Duncan McNeill, and Meg Foster. The film follows two teenagers who meet He-Man, the most powerful man in the universe, who travels to Earth with his friends to stop their archenemy, the evil Skeletor from obtaining a cosmic key that will enable him to take over their home planet of Eternia and the entire universe.

Masters of the Universe was released theatrically in the United States on August 7, 1987. It was a critical and commercial failure, grossing $17 million worldwide against a budget of $22 million. At the time of release, it was met with negative reviews from film critics, but is now regarded as a cult film.