 | Marlon Brando als Ken |
 | Teresa Wright als Ellen |
 | Everett Sloane als Dr. Brock |
 | Jack Webb als Norm |
 | Richard Erdman als Leo |
 | Arthur Jurado als Angel |
 | Virginia Farmer als Nurse Robbins |
 | Dorothy Tree als Ellen's Mother |
 | Howard St. John als Ellen's Father |
 | Nita Hunter als Dolores |
| Patricia Joiner als Laverne |
| John Miller als Mr. Doolin |
 | Cliff Clark als Dr. Kameran |
 | Ray Teal als Man at Bar |
| Margarita Martín als Angel's Mother |
 | Sayre Dearing als Bar Patron (uncredited) |
 | John Hamilton als Justice of the Peace (uncredited) |
 | DeForest Kelley als Dr. Sherman (uncredited) |
 | William H. O'Brien als Nightclub Waiter (uncredited) |
 | Frank O'Connor als Hospital Orderly (uncredited) |
| Fred Zinnemann | Director |
| Carl Foreman | Screenplay |
| Stanley Kramer | Producer |
| Robert De Grasse | Director of Photography |
| Dimitri Tiomkin | Original Music Composer |
| Rudolph Sternad | Production Design |
| Harry Gerstad | Editor |
| Edward G. Boyle | Set Decoration |
| Charles Burke | Camera Operator |
| Hollis Barnes | Hairstylist |
| Carl Foreman | Story |
| Dimitri Tiomkin | Music Director |
| Clem Beauchamp | Production Manager |
| Lloyd Richards | Assistant Director |
| Joe King | Wardrobe Master |
| Ann Peck | Wardrobe Master |
| Gustaf Norin | Makeup Artist |
| Jean L. Speak | Sound Engineer |
| Don Weis | Dialogue Coach |
| Morris Rosen | Key Grip |
| James Potevin | Lighting Technician |
| Ted Anderson | Technical Advisor |
| Pat Grissom | Technical Advisor |
| Herbert Wolf | Technical Advisor |
| George Glass | Associate Producer |
