Underwater!
- Jaar: 1955
- Land: United States of America
- Genre: Avontuur, Actie
- Studio: RKO Radio Pictures
- Trefwoord: treasure hunt, sunken treasure, scuba diving, caribbean sea, salvage operation, shark fishers, christian relic
- Regisseur: John Sturges
- Gips: Jane Russell, Gilbert Roland, Richard Egan, Lori Nelson, Robert Keith, Joseph Calleia