| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anton Grot | Crew | Art | Art Direction |
 Darryl F. Zanuck | Crew | Production | Producer |
 David Mendoza | Crew | Sound | Music |
Earl Luick | Crew | Costume & Make-Up | Costume Design |
 Erno Rapee | Crew | Sound | Music |
Francis Edward Faragoh | Crew | Writing | Screenplay, Dialogue |
 Hal B. Wallis | Crew | Production | Producer |
 Mervyn LeRoy | Crew | Directing | Director |
Ray Curtiss | Crew | Editing | Editor |
Ray Moyer | Crew | Art | Set Decoration |
Robert N. Lee | Crew | Writing | Screenplay |
 Tony Gaudio | Crew | Camera | Director of Photography |
 W.R. Burnett | Crew | Writing | Novel |
 Adolph Faylauer | Cast | Actor | New Year's Celebrant (uncredited) |
 Al Hill | Cast | Actor | Rico's 'Butler' (uncredited) |
 Armand Kaliz | Cast | Actor | De Voss |
 Ben Hendricks Jr. | Cast | Actor | Kid Bean (uncredited) |
 Douglas Fairbanks Jr. | Cast | Actor | Joe Massara |
 Edward G. Robinson | Cast | Actor | Caesar Enrico 'Rico' Bandello aka 'Little Caesar' |
Elmer Ballard | Cast | Actor | Undetermined Role (uncredited) |
 Ernie Adams | Cast | Actor | Cashier (uncredited) |
 Ferike Boros | Cast | Actress | Mrs. Passa (uncredited) |
George Daly | Cast | Actor | Machine-Gunner (uncredited) |
 George E. Stone | Cast | Actor | Otero |
Gladys Lloyd | Cast | Actress | McClure Guest (uncredited) |
 Glenda Farrell | Cast | Actress | Olga Stassoff |
Henry Sedley | Cast | Actor | Scabby (uncredited) |
 Kernan Cripps | Cast | Actor | Detective (uncredited) |
 Landers Stevens | Cast | Actor | Alvin McClure - Crime Commissioner (uncredited) |
 Larry Steers | Cast | Actor | McClure Guest (uncredited) |
 Louis Natheaux | Cast | Actor | Hood (uncredited) |
 Lucille La Verne | Cast | Actress | Ma Magdalena (uncredited) |
 Maurice Black | Cast | Actor | Little Arnie Lorch |
Mike Tellegen | Cast | Actor | Bodyguard (uncredited) |
Nicholas Bela | Cast | Actor | Ritz Colonna |
 Noel Madison | Cast | Actor | Killer Peppi (uncredited) |
 Ralph Ince | Cast | Actor | Pete Montana |
 Bob Walker | Cast | Actor | Lorch Henchman (uncredited) |
 Sidney Blackmer | Cast | Actor | Big Boy |
 Stanley Fields | Cast | Actor | Sam Vettori |
 Thomas E. Jackson | Cast | Actor | Sergeant Flaherty |
 Tom McGuire | Cast | Actor | Detective on Phone (uncredited) |
 William Collier Jr. | Cast | Actor | Tony Passa |
Gay Sheridan | Cast | Actress | Nightclub Patron (uncredited) |
| Person | Type | Job | Role(s) |
