Dudley Moore

as Carl Denham / King Kong (voice)

as Melvyn Orton

as Emory Leeson

as Arthur Bach

as Dr. Jack Hammond / Chris Hammond

as Narrator (voice)

as Patch

as Rob Salinger

as Wylie

as Claude Eastman

as Jason Carmichael

as Saul Benjamin

as Patrick Dalton

as Arthur Bach

as Himself

as Harvey Orchid / Herschel

as George Webber

as Doctor Watson / Mr. Spiggot / Mrs. Ada Holmes / Piano Player

as Stanley Tibbets

as Sergeant

as Lt. Kit Barrington

as Stanley Moon

as John Finsbury

as Rehearsal Pianist (Uncredited)