 Cary GrantLieutenant Commander Matt Sherman | Lieutenant Commander Matt Sherman |
 Tony CurtisLieutenant Nicholas Holden | Lieutenant Nicholas Holden |
 Joan O'Brien2nd Lieutenant Dolores Crandall | 2nd Lieutenant Dolores Crandall |
 Dina Merrill2nd Lieutenant Barbara Duran | 2nd Lieutenant Barbara Duran |
 Gene EvansChief Molumphry | Chief Molumphry |
 Dick SargentEnsign Stovall (as Richard Sargent) | Ensign Stovall (as Richard Sargent) |
 Virginia GreggMajor Edna Heywood | Major Edna Heywood |
 Robert F. SimonCaptain J.B. Henderson | Captain J.B. Henderson |
 Robert GistLieutenant Watson | Lieutenant Watson |
 Gavin MacLeodYeoman Ernest Hunkle | Yeoman Ernest Hunkle |
 George DunnProphet | Prophet |
| DDick CrockettPetty Officer Harmon | Petty Officer Harmon |
 Madlyn Rhue2nd Lieutenant Reid | 2nd Lieutenant Reid |
 Marion Ross2nd Lieutenant Colfax | 2nd Lieutenant Colfax |
 Clarence LungSergeant Ramon Gillardo | Sergeant Ramon Gillardo |
 Frankie DarroPharmacist's Mate 3rd Class Dooley | Pharmacist's Mate 3rd Class Dooley |
| TTony Pastor Jr.Fox | Fox |
 Robert F. HoyReiner | Reiner |
| NNicky BlairSeaman Kraus | Seaman Kraus |
| JJohn W. MorleyWilliams | Williams |
 Arthur O'ConnellChief Motor Machinist's Mate Sam Tostin | Chief Motor Machinist's Mate Sam Tostin |
 Hal BaylorMilitary Police Sergeant (uncredited) | Military Police Sergeant (uncredited) |
 William BryantCrewman (uncredited) | Crewman (uncredited) |
| BBert ByersBowman (uncredited) | Bowman (uncredited) |
| DDick CallinanLieutenant Morrison (uncredited) | Lieutenant Morrison (uncredited) |
| GGordon CasellColonel Higginson (uncredited) | Colonel Higginson (uncredited) |
| MMalcolm CassellSailor (uncredited) | Sailor (uncredited) |
| HH. Haile ChaceSoldier (uncredited) | Soldier (uncredited) |
| TTony CorradoFireman Lye (uncredited) | Fireman Lye (uncredited) |
 Dale CummingsMilitary Policeman (uncredited) | Military Policeman (uncredited) |
