 Richard WidmarkCapt. Adam Jones | Capt. Adam Jones |
 Bella DarviDenise Montel | Denise Montel |
 Victor FrancenProf. Montel | Prof. Montel |
 Cameron Mitchell'Ski' Brodski | 'Ski' Brodski |
 Gene EvansChief Holter | Chief Holter |
 David WayneTugboat Walker | Tugboat Walker |
 Stephen BekassyNeuman | Neuman |
 Richard LooHakada Fujimori | Hakada Fujimori |
 Robert AdlerWelles (uncredited) | Welles (uncredited) |
 Eugene BordenFrench Reporter (uncredited) | French Reporter (uncredited) |
 Leslie BradleyMr. Aylesworth (uncredited) | Mr. Aylesworth (uncredited) |
 Henry KulkyMcCrossin (uncredited) | McCrossin (uncredited) |
| PPeter OrtizCrewman (uncredited) | Crewman (uncredited) |
| RRay StevensCrewman (uncredited) | Crewman (uncredited) |
 John WengrafCol. Schuman (uncredited) | Col. Schuman (uncredited) |
 Harry CarterNot listed | Not listed |
| HHarry DennyNot listed | Not listed |
| FFrank KumagaiNot listed | Not listed |
| EEddie LeeNot listed | Not listed |
| RRollin MoriyamaNot listed | Not listed |
| DDon OrlandoNot listed | Not listed |
| BBeal WongNot listed | Not listed |
 Ben WrightBBC Announcer (uncredited) | BBC Announcer (uncredited) |
| RRon NymanLee Sockwell (uncredited) | Lee Sockwell (uncredited) |
| JJohn RoyCrewman (uncredited) | Crewman (uncredited) |
 Robert B. WilliamsReporter (uncredited) | Reporter (uncredited) |
 Cactus MackCrewman (uncredited) | Crewman (uncredited) |
| WWeaver LevyAsian Man (uncredited) | Asian Man (uncredited) |
| RRobert KinoPassenger (uncredited) | Passenger (uncredited) |
