Face of the Screaming Werewolf is a 1965 horror film created by low budget film maker Jerry Warren. The film was created by combining parts of two unrelated Mexican horror films, La Casa del Terror (1960), and La Momia Azteca (1957), with the addition of original footage shot by Warren. It was released on March 3, 1965, on a double-bill with another of Warren's films, Curse of the Stone Hand.

La Casa del Terror is a Mexican Monster movie starring Lon Chaney Jr. and Mexican comedian Tin Tan. The film involves Casimiro (Tin-Tan), a night watchman in a Wax Museum, whose boss, Professor Sebastian, has been secretly draining his blood to use in his experiments in resurrection. A mummy who is stolen from an Egyptian sarcophagus is revived to life, and becomes a werewolf when moonlight hits him.