| Person | Type | Job | Role(s) |
|---|---|---|---|
 Ben Pivar | Crew | Production | Associate Producer |
Bernard B. Brown | Crew | Sound | Sound Director |
Charles Previn | Crew | Sound | Music |
David Klatzkin | Crew | Sound | Music |
 Edward Dmytryk | Crew | Directing | Director |
 Frank Mitchell | Crew | Crew | Stunts |
 Frank Skinner | Crew | Sound | Music |
George Robinson | Crew | Camera | Director of Photography |
Griffin Jay | Crew | Writing | Screenplay |
Hans J. Salter | Crew | Sound | Music Director, Music |
Henry Sucher | Crew | Writing | Screenplay |
Ira Webb | Crew | Art | Set Decoration |
 Jack Pierce | Crew | Costume & Make-Up | Makeup Artist |
John B. Goodman | Crew | Art | Art Direction |
Melville Shyer | Crew | Directing | Assistant Director |
Milton Carruth | Crew | Editing | Editor |
Neil P. Varnick | Crew | Writing | Original Story |
Ralph M. DeLacy | Crew | Art | Art Direction |
Russell A. Gausman | Crew | Art | Set Decoration |
Sam Perry | Crew | Sound | Music |
Ted Fithian | Crew | Writing | Original Story |
Vera West | Crew | Costume & Make-Up | Costume Design |
William Hedgcock | Crew | Sound | Sound |
Ralph Freed | Crew | Sound | Music |
Paul Van Loan | Crew | Sound | Music |
 Acquanetta | Cast | Actress | Paula Dupree, the Ape Woman |
Al Haskell | Cast | Al (uncredited) | |
 Anthony Warde | Cast | Actor | Tony - Handler (uncredited) |
 Cap Somers | Cast | Actor | Roustabout (uncredited) |
Charles McAvoy | Cast | Actor | Cop (uncredited) |
 Charles Morton | Cast | Actor | Dock Worker (uncredited) |
 Clyde Beatty | Cast | Actor | Fred Mason (in long shots) (archive footage / uncredited) |
 Eddie Borden | Cast | Actor | Dock Spectator (uncredited) |
 Edward Peil Sr. | Cast | Actor | Jake - Handler (uncredited) |
 Evelyn Ankers | Cast | Actress | Beth Colman |
 Fay Helm | Cast | Actress | Nurse Strand |
 Fern Emmett | Cast | Actress | Beth's Murdered Neighbor (uncredited) |
Frank Mitchell | Cast | Actor | Handler (uncredited) |
 Fred Aldrich | Cast | Actor | Roustabout (uncredited) |
 Grant Withers | Cast | Actor | Veterinarian (uncredited) |
Gus Glassmire | Cast | Coroner (uncredited) | |
 Harry Holman | Cast | Actor | Dock Ticket Office Clerk |
 John Carradine | Cast | Actor | Dr. Sigmund Walters |
 Lloyd Corrigan | Cast | Actor | John Whipple |
 Martha Vickers | Cast | Actress | Dorothy Colman |
 Milburn Stone | Cast | Actor | Fred Mason |
 Paul Fix | Cast | Actor | Gruen |
 Ray Corrigan | Cast | Actor | Cheela the Gorilla (uncredited) |
 Ray Walker | Cast | Actor | Ringmaster (uncredited) |
Russell Custer | Cast | Actor | Curley (uncredited) |
 Stanley Price | Cast | Actor | Man on Dock (uncredited) |
 Tom London | Cast | Actor | Ship's Captain (archive footage) |
 Turhan Bey | Cast | Actor | End Narrator (voice)(uncredited) |
 Vince Barnett | Cast | Actor | Curly |
Virginia Engels | Cast | Trapeze Artist (uncredited) | |
 William Gould | Cast | Actor | Sheriff (uncredited) |
Joey Ray | Cast | Actor | Attendant (uncredited) |
Joel Goodkind | Cast | Small Boy (uncredited) | |
Alexander Gill | Cast | Waiter (uncredited) | |
| Person | Type | Job | Role(s) |
