Watermelon Man is a 1970 American comedy film directed by Melvin Van Peebles and starring Godfrey Cambridge, Estelle Parsons, Howard Caine, D'Urville Martin, Kay Kimberley, Mantan Moreland, and Erin Moran. Written by Herman Raucher, it tells the story of an extremely bigoted 1960s-era white insurance salesman named Jeff Gerber, who wakes up one morning to find that he has become black. The premise for the film was inspired by Franz Kafka's Metamorphosis, and by John Howard Griffin's autobiographical Black Like Me.

Melvin Van Peebles was an American actor, filmmaker, writer, and composer. He worked as an active filmmaker into the 2000s. His feature film debut, The Story of a Three-Day Pass (1967), was based on his own French-language novel La Permission and was shot in France, as it was difficult for a black American director to get work at the time. The film won an award at the San Francisco International Film Festival which gained him the interest of Hollywood studios, leading to his American feature debut Watermelon Man, in 1970. Eschewing further overtures from Hollywood, he used the successes he had so far to bankroll his work as an independent filmmaker.