City Under the Sea
- Leto: 1965
- Država: United Kingdom, United States of America
- Žanr: Avantura, Znanstvena fantastika, Grozljivka
- Studio: Bruton Film Productions, American International Pictures
- Ključna beseda: underwater, lost world
- Direktor: Jacques Tourneur
- Igralska zasedba: Vincent Price, David Tomlinson, Tab Hunter, Susan Hart, John Le Mesurier, Henry Oscar