Directing
| Miloš Forman | Director |
Writing
| Ken Kesey | Novel |
| Bo Goldman | Screenplay |
| Lawrence Hauben | Screenplay |
Production
| Michael Douglas | Producer |
| Saul Zaentz | Producer |
| Jane Feinberg | Casting |
| Mike Fenton | Casting |
Sound
| Jack Nitzsche | Original Music Composer |
| Pat Jackson | Sound Editor |
Camera
| Haskell Wexler | Director of Photography |
Editing
| Sheldon Kahn | Editor |
| Lynzee Klingman | Editor |
Crew
| Alan Gibbs | Stunts |
Cast
| Jack Nicholson | as Randle Patrick McMurphy | |
| Louise Fletcher | as Nurse Mildred Ratched | |
| William Redfield | as Harding | |
| Michael Berryman | as Ellis | |
| Peter Brocco | as Colonel Matterson | |
| Dean R. Brooks | as Dr. John Spivey | |
| Alonzo Brown | as Miller | |
| Scatman Crothers | as Orderly Turkle | |
| Mwako Cumbuka | as Attendant Warren | |
| Danny DeVito | as Martini | |
| William Duell | as Jim Sefelt | |
| Josip Elic | as Bancini | |
| Lan Fendors | as Nurse Itsu | |
| Nathan George | as Attendant Washington | |
| Ken Kenny | as Beans Garfield | |
| Mel Lambert | as Harbormaster | |
| Sydney Lassick | as Charlie Cheswick | |
| Kay Lee | as Night Nurse | |
| Brad Dourif | as Billy Bibbit | |
| Christopher Lloyd | as Taber | |
| Louisa Moritz | as Rose | |
| Will Sampson | as Chief Bromden | |
| Vincent Schiavelli | as Fredrickson | |
| Anjelica Huston | as Woman on Pier |

