The Magnetic Monster is a 1953 independently made American black-and-white science fiction film, produced by Ivan Tors and George Van Marter, directed by Curt Siodmak and (uncredited) Herbert L. Strock. The film stars Richard Carlson, King Donovan, and Jean Byron. Strother Martin appears briefly in one scene as an airliner co-pilot. The film was released by United Artists.

Magnetic Monster is the first feature film in Ivan Tors' "Office of Scientific Investigation" (OSI) trilogy, which was followed by Riders to the Stars (1954) and Gog (1954).

The Magnetic Monster marked Carlson's initial foray into science fiction and horror films; he would follow it with It Came from Outer Space (1953), The Maze (1953), Riders to the Stars (1954), Creature from the Black Lagoon (1954), and such TV series as Thriller and Voyage to the Bottom of the Sea.