Jack Nicholson
Randle Patrick McMurphy
Brad Dourif
Billy Bibbit
Louise Fletcher
Nurse Mildred Ratched
Danny DeVito
Martini
William Redfield
Dale Harding
Scatman Crothers
Orderly Turkle
Christopher Lloyd
Max Taber
Will Sampson
Chief Bromden
Dean R. Brooks
Dr. John Spivey
Michael Berryman
Ellis
Sydney Lassick
Charlie Cheswick
William Duell
Jim Sefelt
Vincent Schiavelli
Bruce Fredrickson
Peter Brocco
Col. Matterson
Alonzo Brown
Miller
Mwako Cumbuka
Warren
Josip Elic
Bancini
Ken Kenny
Beans Garfield
Nathan George
Washington
Ted Markland
Hap Arlich
Louisa Moritz
Rose
Mews Small
Candy
Delos V. Smith Jr.
Scanlon
Lan Fendors
Nurse Itsu
Mimi Sarkisian
Nurse Pilbow
Mel Lambert
Harbor Master
Kay Lee
Night Supervisor
Dwight Marfield
Ellsworth
Tin Welch
Ruckley
Philip Roth
Woolsey
Aurore Clément
Lady on Pier (uncredited)
Anjelica Huston
Woman in Crowd on Pier (uncredited)
Audrey Landers
Actress on TV Screen (uncredited)
Saul Zaentz
Captain on Shore (uncredited)