City Under the Sea
- Joer: 1965
- Land: United Kingdom, United States of America
- Genre: Adventure, Science Fiction, Horror
- Studio: Bruton Film Productions, American International Pictures
- Schlësselwuert: underwater, lost world
- Direkter: Jacques Tourneur
- Besetzung: Vincent Price, David Tomlinson, Tab Hunter, Susan Hart, John Le Mesurier, Henry Oscar