Girls in Prison is a 1956 American sexploitation women in prison drama film about a young woman who is convicted of being an accomplice to a bank robbery and is sent to an all-female prison. The film was directed by Edward L. Cahn, and stars Richard Denning, Joan Taylor, and Mae Marsh. American International Pictures released the film as a double feature with Hot Rod Girl.

Richard Denning was an American actor who starred in science fiction films of the 1950s, including Unknown Island (1948), Creature from the Black Lagoon (1954), Target Earth (1954), Day the World Ended (1955), Creature with the Atom Brain (1955), and The Black Scorpion (1957). Denning also appeared in the film An Affair to Remember (1957) with Cary Grant and on radio with Lucille Ball in My Favorite Husband (1948–1951), the forerunner of television's I Love Lucy.