| Monster |
(undefined) / International (racier version) (English title) |
| Beneath the Darkness |
USA (working title) |
| Criaturas das Profundezas |
Brazil (imdb display title) |
| Das Grauen aus der Tiefe |
West Germany |
| Diepzee Monsters |
Netherlands (imdb display title) |
| Humanoides del abismo |
Spain |
| Humanoids de les profunditats |
Spain (Catalan title) |
| Humanoids of the Deep |
(undefined) |
| Humanoidy z glebin |
Poland |
| Les monstres de la mer |
France |
| Monster (Humanoids from the Deep) |
UK |
| Monster - Esseri ignoti dai profondi abissi |
Italy (imdb display title) |
| Monstruos del abismo |
Colombia (imdb display title) |
| Morske posasti |
Slovenia (imdb display title) |
| O Monstro |
Portugal (imdb display title) |
| Tromos apo to vytho |
Greece (transliterated ISO-LATIN-1 title) |