| Person | Type | Job | Role(s) |
|---|---|---|---|
 Adam Shirk | Crew | Writing | Theatre Play |
Allen K. Wood | Crew | Directing | Assistant Director |
Charles J. Bigelow | Crew | Production | Production Manager |
 Curt Siodmak | Crew | Writing | Screenplay, Adaptation |
Edward J. Kay | Crew | Sound | Original Music Composer, Music Director |
Gordon Bau | Crew | Costume & Make-Up | Makeup Artist |
Harry Neumann | Crew | Camera | Director of Photography |
Karl Zint | Crew | Sound | Sound Recordist |
Richard Carroll | Crew | Writing | Screenplay |
Russell F. Schoengarth | Crew | Editing | Editor |
 William Nigh | Crew | Directing | Director |
William T. Lackey | Crew | Production | Associate Producer |
 Billy Bletcher | Cast | Actor | Short Mustached Posse Man |
 Boris Karloff | Cast | Actor | Dr. Bernard Adrian |
Buddy Swan | Cast | Willie Brill | |
 Donald Kerr | Cast | Actor | Citizen Carrying Mauled Ape Trainer |
 Dorothy Vaughan | Cast | Actress | Mother Clifford |
 Gene O'Donnell | Cast | Danny Foster | |
 George Cleveland | Cast | Actor | Mr. Howley |
 Gertrude Hoffmann | Cast | Actress | Jane the Housekeeper |
 Gibson Gowland | Cast | Actor | Posse Member |
 Harry C. Bradley | Cast | Actor | Quinn |
 Henry Hall | Cast | Actor | Sheriff Jeff Halliday |
 I. Stanford Jolley | Cast | Actor | Ape Trainer |
Jack Kennedy | Cast | Actor | Dep. Archie Tomlin |
 Jessie Arnold | Cast | Actress | Mrs. Brill |
 Julia Griffith | Cast | Actress | Townswoman |
 Maris Wrixon | Cast | Actress | Frances Clifford |
 Mary Field | Cast | Actress | Mrs. Mason |
 Minerva Urecal | Cast | Actress | Townswoman |
Pauline Drake | Cast | Young Girl | |
 Philo McCullough | Cast | Actor | Henry Mason |
 Ray Corrigan | Cast | Actor | Nabu |
 Selmer Jackson | Cast | Actor | Dr. McNulty |
Stan Jolley | Cast | Actor | Boy in Soda Shop |
| Person | Type | Job | Role(s) |
