The Brain from Planet Arous is a 1957 independently made American black-and-white science fiction film, produced by Jacques R. Marquette, directed by Nathan H. Juran, that stars John Agar, Joyce Meadows, and Robert Fuller. Distributed briefly by Howco International in late 1957, the film appeared in 1958 on a double feature with Teenage Monster.

John George Agar Jr. was an American film and television actor. He is best known for starring alongside John Wayne in the films Sands of Iwo Jima, Fort Apache, and She Wore a Yellow Ribbon. In his later career he was the star of B movies, such as Tarantula!, The Mole People, The Brain from Planet Arous, Revenge of the Creature, Flesh and the Spur and Hand of Death. He was the first husband of Shirley Temple.