Behemoth, the Sea Monster
- Jier: 1959
- Lân: United Kingdom, United States of America
- Sjenre: Science Fiction
- Studio: Artistes Alliance Ltd., Diamond Pictures Corp.
- Keyword: london, england, monster, river thames, radiation, giant monster, paleontologist, radium, cornwall, england, laboratory, dinosaur, black and white, sea monster, monster movie
- Direkteur: Douglas Hickox, Eugène Lourié
- Cast: Gene Evans, André Morell, Leigh Madison, John Turner, Alastair Hunter, Lloyd Lamble