The Giant Behemoth is a 1959 British-American science fiction action horror film directed by Eugène Lourié, with special effects by Willis H. O'Brien, Pete Peterson, Irving Block, Jack Rabin, and Louis de Witt. The film stars Gene Evans and André Morell. The screenplay was written by blacklisted author Daniel Lewis James with director Lourié.

Willis Harold O'Brien, known as Obie O'Brien, was an American motion picture special effects and stop-motion animation pioneer, who according to ASIFA-Hollywood "was responsible for some of the best-known images in cinema history," and is best remembered for his work on The Lost World (1925), King Kong (1933), The Last Days of Pompeii (1935) and Mighty Joe Young (1949), for which he won the 1950 Academy Award for Best Visual Effects.