Truman Capote
Lionel Twain
Alec Guinness
Bensonmum
Peter Sellers
Sidney Wang
David Niven
Dick Charleston
Maggie Smith
Dora Charleston
James Coco
Milo Perrier
Peter Falk
Sam Diamond
Eileen Brennan
Tess Skeffington
Elsa Lanchester
Jessica Marbles
Estelle Winwood
Nurse
Nancy Walker
Maid
James Cromwell
Marcel Cassette
Richard Narita
Willie Wang
Fay Wray
Door Bell (archive sound) (uncredited)