Killers from Space (also known as The Man Who Saved the Earth) is a 1954 American independent science fiction film produced and directed by W. Lee Wilder, and starring Peter Graves, Barbara Bestar, Frank Gerstle, James Seay, and Steve Pendleton. Shot in black-and-white, the film originated as a commissioned screenplay from Wilder's son Myles Wilder and their regular collaborator William Raynor.

Lee Wilder's production company, Planet Filmplays, usually producing on a financing-for-distribution basis for United Artists, wound up making this film for RKO Radio Pictures distribution.