| Person | Type | Job | Role(s) |
|---|---|---|---|
 Bertram Millhauser | Crew | Writing | Screenplay, Story |
 Carey Loftin | Crew | Crew | Stunts |
 Cedric Gibbons | Crew | Art | Art Direction |
Charles Lawton Jr. | Crew | Camera | Director of Photography |
Daniele Amfitheatrof | Crew | Sound | Original Music Composer |
 Douglas Shearer | Crew | Sound | Sound |
Edward Ward | Crew | Sound | Original Music Composer |
 Edwin B. Willis | Crew | Art | Set Decoration |
Elmo Veron | Crew | Editing | Editor |
Harold Buckley | Crew | Writing | Story |
 Jacques Tourneur | Crew | Directing | Director |
Jerry Bresler | Crew | Production | Unit Manager |
Leo Arnaud | Crew | Sound | Orchestrator |
Lucien Hubbard | Crew | Production | Producer |
Sandy Roth | Crew | Directing | Assistant Director |
 Addison Richards | Cast | Actor | Streeter - President of Radex |
 Andrew Tombes | Cast | Actor | Robinson |
 Bud Geary | Cast | Actor | Seaman on Yacht |
Carey Loftin | Cast | Actor | Minor Role |
Charles Flynn | Cast | Actor | Factory Workman |
 Charles Sherlock | Cast | Actor | Keller's Driver |
 Don Brodie | Cast | Actor | Engel - X-49 Workman |
 Don Castle | Cast | Actor | Ed - 1st Hurt Worker |
 Donald Meek | Cast | Actor | Bartholomew, the bee man |
 Eddy Chandler | Cast | Actor | Joe - Blueprint Security Officer |
 Edgar Dearing | Cast | Actor | Harbor Patrol Sgt. Denny |
 Edward Hearn | Cast | Actor | Deputy |
Ernie Alexander | Cast | Actor | Factory Workman |
 Frank Ball | Cast | Actor | Peake the Gardener |
 Frank Faylen | Cast | Actor | Pete Foley - 1st pilot |
 Gene Coogan | Cast | Actor | Welder |
 George Meeker | Cast | Actor | Hartley |
Gil Perkins | Cast | Actor | Factory Workman |
Harry Templeton | Cast | Police Driver | |
 Harry Tyler | Cast | Actor | Locker Room Attendant |
 Henry Hull | Cast | Actor | John A. Keller |
 Henry Victor | Cast | Actor | Hammil - tall spy boss |
Joseph P. Mack | Cast | Actor | Draughtsman |
 Kenner G. Kemp | Cast | Actor | Student |
 Lee Phelps | Cast | Actor | Riley - Airplane Workman |
Lee Prather | Cast | Actor | Police Captain |
Louis V. Arco | Cast | Yacht Captain | |
 Martin Kosleck | Cast | Actor | Otto - 3d hurt worker |
 Milburn Stone | Cast | Actor | Krebs - 2d hurt worker |
 Paul Ellis | Cast | Actor | Faber - Henchman |
 Richard Lane | Cast | Actor | Sam Vaughn |
 Rita Johnson | Cast | Actress | Lou Farnsby |
 Roger Moore | Cast | Actor | Streeter's Secretary |
 Stanley Ridges | Cast | Actor | Doctor Frankton (as Stanley C. Ridges) |
 Sterling Holloway | Cast | Actor | Bartholomew's Bee Asst. |
Wally Maher | Cast | Actor | Cliff Parsons - Keller's Pilot & Asst. |
 Walter Pidgeon | Cast | Actor | Nicholas 'Nick' Carter, aka Robert Chalmers |
 Wilfred Lucas | Cast | Actor | Police Detective Randall |
William Lally | Cast | Actor | Exit Guard |
 William Newell | Cast | Actor | Taxi Driver |
Richard Terry | Cast | Actor | Cain - Henchman |
 Chuck Hamilton | Cast | Actor | Entrance Guard |
| Person | Type | Job | Role(s) |
