| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arthur Lonergan | Crew | Art | Art Direction |
Bebe Barron | Crew | Sound | Original Music Composer |
 Cedric Gibbons | Crew | Art | Art Direction |
Cyril Hume | Crew | Writing | Screenplay |
 Edwin B. Willis | Crew | Art | Set Decoration |
Ferris Webster | Crew | Editing | Editor |
 Fred M. Wilcox | Crew | Directing | Director |
 George J. Folsey | Crew | Camera | Director of Photography |
 Helen Rose | Crew | Costume & Make-Up | Costume Design |
Hugh Hunt | Crew | Art | Set Decoration |
Irving Block | Crew | Writing | Story |
Louis Barron | Crew | Sound | Original Music Composer |
Nicholas Nayfack | Crew | Production | Producer |
 Walter Plunkett | Crew | Costume & Make-Up | Costume Design |
Kendrick Kinney | Crew | Sound | Sound Editor |
John Lipow | Crew | Sound | Sound Editor |
 Anne Francis | Cast | Actress | Altaira Morbius |
 Earl Holliman | Cast | Actor | Cookie |
 Frankie Darro | Cast | Actor | Robby the Robot (interior) (uncredited) |
 George D. Wallace | Cast | Actor | Bosun |
Harry Harvey Jr. | Cast | Actor | Crewman Randall |
 Jack Kelly | Cast | Actor | Lt. Jerry Farman |
 James Best | Cast | Actor | Crewman (uncredited) |
 James Drury | Cast | Actor | Crewman Strong |
Jimmy Thompson | Cast | Actor | Crewman Youngerford |
 Les Tremayne | Cast | Actor | Narrator (uncredited) (voice) |
 Leslie Nielsen | Cast | Actor | Commander John J. Adams |
 Marvin Miller | Cast | Actor | Voice of Robby the Robot |
 Morgan Jones | Cast | Actor | Crewman Nichols |
Peter Miller | Cast | Actor | Crewman Moran |
 Richard Anderson | Cast | Actor | Chief Engineer Quinn |
Richard Grant | Cast | Actor | Crewman Silvers |
 Robert Dix | Cast | Actor | Crewman Grey |
 Walter Pidgeon | Cast | Actor | Dr. Edward Morbius |
 Warren Stevens | Cast | Actor | Lt. 'Doc' Ostrow |
 William Boyett | Cast | Actor | Crewman (uncredited) |
Roger McGee | Cast | Crewman Lindstrom | |
 Robby the Robot | Cast | Actor | Robby the Robot |
| Person | Type | Job | Role(s) |
