| Person | Type | Job | Role(s) |
|---|---|---|---|
 Cedric Gibbons | Crew | Art | Art Direction |
 Charles Rosher | Crew | Camera | Director of Photography |
 Dashiell Hammett | Crew | Writing | Characters |
 David Snell | Crew | Sound | Music |
 Douglas Shearer | Crew | Sound | Recording Supervision |
 Edward Buzzell | Crew | Directing | Director |
 Edwin B. Willis | Crew | Art | Set Decoration |
 Gene Ruggiero | Crew | Editing | Editor |
Harry Crane | Crew | Crew | Additional Dialogue |
 Irene | Crew | Costume & Make-Up | Costume Supervisor |
 Jack Dawn | Crew | Costume & Make-Up | Makeup Designer |
James O'Hanlon | Crew | Crew | Additional Dialogue |
Nat Perrin | Crew | Writing | Screenplay, Producer |
Randall Duell | Crew | Art | Art Direction |
Stanley Roberts | Crew | Writing | Story |
Steve Fisher | Crew | Writing | Screenplay |
 Sydney Guilaroff | Crew | Costume & Make-Up | Hair Designer |
 Bess Flowers | Cast | Actress | Jessica Thayar |
 Bruce Cowling | Cast | Actor | Phil Brant |
 Clinton Sundberg | Cast | Actor | Mr. Purdy (uncredited) |
 Connie Gilchrist | Cast | Actress | Bertha |
 Dean Stockwell | Cast | Actor | Nick Charles Jr. |
 Don Taylor | Cast | Actor | Buddy Hollis |
 Esther Howard | Cast | Actress | Sadie (uncredited) |
 Gloria Grahame | Cast | Actress | Fran Page |
Henry Nemo | Cast | The Neem | |
 James Burke | Cast | Actor | Policeman Callahan (uncredited) |
 James Flavin | Cast | Actor | Policeman Reardon (uncredited) |
 Jayne Meadows | Cast | Actress | Janet Thayar |
 Keenan Wynn | Cast | Actor | Clarence "Clinker" Krause |
 Leon Ames | Cast | Actor | Mitchell Talbin |
 Marie Windsor | Cast | Actress | Helen Amboy |
 Morris Ankrum | Cast | Actor | Inspector (uncredited) |
 Myrna Loy | Cast | Actress | Nora Charles |
 Patricia Morison | Cast | Actress | Phyllis Talbin |
 Phillip Reed | Cast | Actor | Tommy Drake |
 Ralph Morgan | Cast | Actor | David Thayar |
 Warner Anderson | Cast | Actor | Dr. Monolaw |
 William Bishop | Cast | Actor | Al Amboy |
 William Powell | Cast | Actor | Nick Charles |
 Tom Dugan | Cast | Actor | Policeman Davis (uncredited) |
Asta Jr. | Cast | Asta (uncredited) | |
| Person | Type | Job | Role(s) |
