| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arthur Piantadosi | Crew | Sound | Sound |
 Buddy Van Horn | Crew | Crew | Stunt Double |
 Daniel L. Fapp | Crew | Camera | Director of Photography |
Daniel McCauley | Crew | Directing | Assistant Director |
Frank Capra, Jr. | Crew | Production | Associate Producer |
Frank Tuttle | Crew | Art | Set Decoration |
John Franco | Crew | Directing | Script Supervisor |
 John Sturges | Crew | Directing | Director |
Lawrence W. Butler | Crew | Crew | Special Effects |
Les Fresholtz | Crew | Sound | Sound |
 Lyle R. Wheeler | Crew | Art | Production Design |
Norman Stuart | Crew | Crew | Dialogue Coach |
Ralph E. Black | Crew | Directing | Second Unit Director |
Robie Robinson | Crew | Crew | Special Effects |
W. Wallace Kelley | Crew | Camera | Second Unit Director of Photography |
Walter Thompson | Crew | Editing | Editor |
M.J. Frankovich | Crew | Production | Producer |
Martin Caidin | Crew | Writing | Novel |
William J. O'Sullivan | Crew | Production | Production Manager |
Seth Banks | Crew | Costume & Make-Up | Costumer |
Nelson Tyler | Crew | Camera | Aerial Camera |
Donald C. Glouner | Crew | Crew | Special Effects |
Mayo Simon | Crew | Writing | Screenplay |
 Craig Huebing | Cast | Actor | Flight Director |
 David Janssen | Cast | Actor | Ted Dougherty |
Dennis Robertson | Cast | Actor | Launch Director |
 Frank Marth | Cast | Actor | Air Force Systems Director |
 Gene Hackman | Cast | Actor | Buzz Lloyd |
 George Gaynes | Cast | Actor | Mission Director |
 Gregory Peck | Cast | Actor | Charles Keith |
 James Franciscus | Cast | Actor | Clayton Stone |
 John Carter | Cast | Actor | Flight Surgeon |
 Kenner G. Kemp | Cast | Actor | Guest in Observation Room (uncredited) |
 Lee Grant | Cast | Actress | Celia Pruett |
 Mariette Hartley | Cast | Actress | Betty Lloyd |
 Nancy Kovack | Cast | Actress | Teresa Stone |
 Richard Crenna | Cast | Actor | Jim Pruett |
 Scott Brady | Cast | Actor | Public Affairs Officer |
Tom Stewart | Cast | Actor | Houston Cap Com |
Vincent Van Lynn | Cast | Actor | Aerospace Journalist |
 Walter Brooke | Cast | Actor | Network Commentator |
 Duke Hobbie | Cast | Actor | Air Force Titan Specialist |
| Person | Type | Job | Role(s) |
