Masters of the Universe is a 1987 American fantasy 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 the evil Skeletor from obtaining a cosmic key that will enable him to take over their homeworld of Eternia.

Masters of the Universe is a sword and planet-themed media franchise created by Mattel. The main premise revolves around the conflict between He-Man and Skeletor on the planet Eternia, with a vast lineup of supporting characters in a hybrid setting of medieval sword and sorcery, and sci-fi technology. A follow-up series, She-Ra: Princess of Power revolves around He-Man's sister She-Ra and her rebellion against The Horde on the planet Etheria. Since its initial launch, the franchise has spawned a variety of products, including multiple lines of action figures, six animated television series, several comic series, video games, books and magazines, a daily newspaper comic strip, and two feature films.