 | James Dean als Cal Trask |
 | Julie Harris als Abra Bacon |
 | Raymond Massey als Adam Trask |
 | Richard Davalos als Aron Trask |
 | Jo Van Fleet als Kate Trask |
 | Burl Ives als Sam the Sheriff |
 | Albert Dekker als Will Hamilton |
 | Lois Smith als Anne |
 | Harold Gordon als Gustav Albrecht |
 | Nick Dennis als Rantani |
 | Abdullah Abbas als Townsman at Carnival (uncredited) |
| John Alban als Townsman (uncredited) |
| Rose Allen als Townswoman at Carnival (uncredited) |
| Frank Baker als Townsman (uncredited) |
 | Barbara Baxley als Nurse (uncredited) |
 | John Beradino als Coalman at Lettuce Field (uncredited) |
| Joe Brooks als Townsman at Carnival (uncredited) |
| Nora Bush als Townswoman at Carnival (uncredited) |
 | Timothy Carey als Joe (uncredited) |
| Jack Carr als Charlie (Townsman at Carnival) (uncredited) |
 | Wheaton Chambers als Townsman at Carnival (uncredited) |
 | Lonny Chapman als Roy Turner (Automobile Mechanic) (uncredited) |
| Edward Clark als Draft Board Member (uncredited) |
 | Harry Cording als Bouncer (uncredited) |
| Roger Creed als Townsman at Carnival (uncredited) |
| Bryn Davis als Townswoman at Carnival (uncredited) |
| Ray Dawe als Workman (uncredited) |
| Anna Dewey als Townswoman at Carnival (uncredited) |
 | Lester Dorr als City Official at Parade (uncredited) |
 | Joe Dougherty als Townsman at Carnival (uncredited) |
| Darren Dublin als Student (uncredited) |
 | Franklyn Farnum als Townsman at Carnival (uncredited) |
 | Al Ferguson als Townsman at Carnival (uncredited) |
| Cliff Fields als Student (uncredited) |
| Lloyd Ford als Townsman at Carnival (uncredited) |
 | Robert Foulk als Man at Boxcar (uncredited) |
| Curt Furberg als Townsman (uncredited) |
| Robert Gardett als Townsman at Carnival (uncredited) |
 | Richard Garrick als Dr. Edwards (uncredited) |
 | John George als Townsman at Carnival (uncredited) |
| Leonard George als Townsman at Carnival (uncredited) |
| Ruth Gillis als Woman (uncredited) |
 | John Halloran als City Official at Parade (uncredited) |
| Sam Harris als Official at Parade (uncredited) |
 | Jonathan Haze als Piscora's Son (uncredited) |
| Ramsay Hill als English Officer (uncredited) |
 | Earle Hodgins als Shooting Gallery Concessionaire (uncredited) |
| Tex Holden als Townsman (uncredited) |
| Diane Howe als Student (uncredited) |
| Charles Anthony Hughes als City Official at Parade (uncredited) |
 | Gail Kobe als Student (uncredited) |
| Effie Laird als Townswoman at Carnival (uncredited) |
 | Billy Mahan als Townsman at Carnival (uncredited) |
| Mike Marienthal als Townsman at Carnival (uncredited) |
| Frank Mazzola als Student (uncredited) |
 | Philo McCullough als Deputy Sheriff (uncredited) |
| Edward McNally als Soldier (uncredited) |
| Ken Miller als Student (uncredited) |
| Tex Mooney als Bartender (uncredited) |
 | Ralph Moratz als Soldier on Train (uncredited) |
| Robert Morris als Student (uncredited) |
| Paul Nichols als Townsman at Carnival (uncredited) |
 | Artie Ortego als Townsman (uncredited) |
| Gil Perkins als Lettuce Truck Worker (uncredited) |
 | William Phillips als Coalman at Lettuce Fields / Man at Exercise Class (uncredited) |
| Rose Plumer als Rose (Townswoman at Carnival) (uncredited) |
| Patricia Prest als Student (uncredited) |
 | Julian Rivero als Prisoner (uncredited) |
| Mickey Roth als Student (uncredited) |
 | Henry Rowland als Helper at Boxcar (uncredited) |
| Loretta Rush als Card Dealer (uncredited) |
 | Scott Seaton als Townsman (uncredited) |
| Sammy Shack als Townsman (uncredited) |
 | Charles Sherlock als Milk Bottle Concessionaire at Carnival (uncredited) |
 | Mario Siletti als Mr. Piscora (uncredited) |
 | Hal Taggart als City Official at Parade (uncredited) |
| Bette Treadville als Madame (uncredited) |
| Sid Troy als Townsman at Carnival (uncredited) |
 | Sailor Vincent als Townsman in Parade / Townsman at Carnival (uncredited) |
| Max Wagner als Workman (uncredited) |
 | Lillian West als Townswoman at Carnival (uncredited) |
| Chalky Williams als Townsman at Carnival (uncredited) |
| Elia Kazan | Director |
| John Steinbeck | Author |
| Paul Osborn | Author |
| Leonard Rosenman | Original Music Composer |
| Ted D. McCord | Director of Photography |
| Elia Kazan | Producer |
| Owen Marks | Editor |
| Mushy Callahan | Stunts |
| Malcolm C. Bert | Production Design |
| James Basevi | Production Design |
| William Wallace | Set Decoration |
| Guy Thomajan | Additional Dialogue |
| Robert Ewing | Makeup Artist |
| Horace Hough | Assistant Director |
| Don Alvarado | Unit Manager |
| Harvey Clermont | Casting |
| George James Hopkins | Set Decoration |
| Anna Hill Johnstone | Costume Design |
| Gordon Bau | Makeup Artist |
| Tillie Starriett | Hairstylist |
| Don Alvarado | Assistant Director |
| Stanley Jones | Sound |
| Maurice De Packh | Orchestrator |
| Conrad L. Hall | Camera Operator |
| Irva Mae Ross | Script Supervisor |
| Gil Perkins | Stunts |
| Sailor Vincent | Stunts |
| Charles O'Bannon | Gaffer |
