| Person | Type | Job | Role(s) |
|---|---|---|---|
 Carmen Dragon | Crew | Sound | Original Music Composer |
Eleazar Lipsky | Crew | Writing | Novel |
Gene Ruggiero | Crew | Editing | Editor |
 John Alton | Crew | Camera | Director of Photography |
John Monks Jr. | Crew | Writing | Writer |
 John Sturges | Crew | Directing | Director |
William H. Wright | Crew | Production | Producer |
 Ann Doran | Cast | Actress | Betty Clark, Policewoman |
 Arthur Shields | Cast | Actor | Mr. O'Hara |
 Bill Fletcher | Cast | Actor | Pete Korvac (uncredited) |
 Brooks Benedict | Cast | Actor | Gambler (uncredited) |
 Charles Bronson | Cast | Actor | Angelo Korvac (uncredited) |
 Diana Lynn | Cast | Actress | Virginia 'Ginny' Curtayne |
 Eduardo Ciannelli | Cast | Actor | Sol 'Knuckles' Lanzetta |
 Emile Meyer | Cast | Actor | Captain Tom Mulvaney |
 Henry O'Neill | Cast | Actor | Judge Keating |
 Jack Kruschen | Cast | Actor | Uniformed Detective (uncredited) |
 James Arness | Cast | Actor | John Fordman 'Johnny' O'Hara |
 Jay C. Flippen | Cast | Actor | Sven Norson |
John Albright | Cast | Actor | Waiter (uncredited) |
 John Hodiak | Cast | Actor | District Attorney Louis Barra |
 Katherine Warren | Cast | Actress | Mrs. William Sheffield (as Katharine Warren) |
 Leonard Bremen | Cast | Actor | Harry (uncredited) |
 Louise Lorimer | Cast | Actress | Mrs. Peg O'Hara |
 Mae Clarke | Cast | Actress | Receptionist (uncredited) |
 Michael Tolan | Cast | Actor | Vincent Korvac (as Lawrence Tolan) (uncredited) |
 Ned Glass | Cast | Actor | Preliminary Hearing Judge (uncredited) |
 Pat O’Brien | Cast | Actor | Det. Vincent Ricks |
 Peter Mamakos | Cast | Actor | James Korvac (uncredited) |
 Regis Toomey | Cast | Actor | Fred Colton, Police Sound Man |
 Richard Anderson | Cast | Actor | Jeff Chapman |
Richard Bartlett | Cast | Actor | Tony Korvac (uncredited) |
 Sailor Vincent | Cast | Actor | William Sheffield (uncredited) |
 Spencer Tracy | Cast | Actor | James P. Curtayne |
Tony Barr | Cast | Little Wolfie (uncredited) | |
 William Campbell | Cast | Actor | Frank Korvac |
 William Schallert | Cast | Actor | Intern with Ambulance (uncredited) |
 Yvette Duguay | Cast | Actress | Mrs. Katrina Lanzetta |
| Person | Type | Job | Role(s) |
