| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arthur J. Ornitz | Crew | Camera | Director of Photography |
Charles Rosen | Crew | Art | Art Direction |
Clem Portman | Crew | Sound | Recording Supervision |
Daniel Keyes | Crew | Writing | Novel |
Fredric Steinkamp | Crew | Editing | Editor |
Henry Spitz | Crew | Production | Production Manager |
Jim Shields | Crew | Sound | Sound Recordist |
Phil Naso | Crew | Costume & Make-Up | Hairstylist |
 Ralph Nelson | Crew | Directing | Director, Producer |
Richard Kuhn | Crew | Art | Title Designer |
Rod Stephens | Crew | Crew | Post Production Assistant |
Selig J. Seligman | Crew | Production | Executive Producer |
 Stirling Silliphant | Crew | Writing | Screenplay |
John DeCuir | Crew | Art | Production Design |
 Ravi Shankar | Crew | Sound | Music |
Jack Brown | Crew | Camera | Assistant Camera |
Hazel Roy | Crew | Costume & Make-Up | Costume Design |
Shelley Bartolini | Crew | Crew | Scenic Artist |
Tom Walker Jr. | Crew | Production | Production Supervisor |
Vin Kehoe | Crew | Costume & Make-Up | Makeup Artist |
 Barney Martin | Cast | Actor | Hank |
 Claire Bloom | Cast | Actress | Alice Kinian |
 Cliff Robertson | Cast | Actor | Charlie Gordon |
 Dick Van Patten | Cast | Actor | Bert |
Edward McNally | Cast | Gimpy | |
 Leon Janney | Cast | Actor | Dr. Richard Nemur |
 Lilia Skala | Cast | Actress | Dr. Anna Straus |
Ralph Nelson | Cast | Actor | Convention Speaker (uncredited) |
 Randee Lynne Jensen | Cast | Actress | Woman (uncredited) |
 Ruth White | Cast | Actress | Mrs. Apple |
Marianna Case | Cast | Young Woman (uncredited) | |
Donald Warnock | Cast | Conference Attendee (uncredited) | |
Leon Collins | Cast | Actor | Tap Dancer (uncredited) |
Frank Dolan | Cast | Eddie (uncredited) | |
William Dwyer | Cast | Joey | |
Dan Morgan | Cast | Paddy | |
Harry Cooper | Cast | Conference Attendee (uncredited) | |
| Person | Type | Job | Role(s) |
