Lionel Twain
Truman Capote
Bensonmum
Alec Guinness
Maid
Nancy Walker
Marcel Cassette
James Cromwell
Willie Wang
Richard Narita
Door Bell (archive sound) (uncredited)
Fay Wray
Sidney Wang
Peter Sellers
Dick Charleston
David Niven
Dora Charleston
Maggie Smith
Milo Perrier
James Coco
Sam Diamond
Peter Falk
Tess Skeffington
Eileen Brennan
Jessica Marbles
Elsa Lanchester
Nurse
Estelle Winwood
Writer
Neil Simon
Title Graphics
Charles Addams
Makeup Supervisor
Charles H. Schram
Producer
Ray Stark
Original Music Composer
Dave Grusin
Director
Robert Moore
Costume Design
Ann Roth
Supervising Film Editor
Margaret Booth
Director of Photography
David M. Walsh
Editor
John F. Burnett
Casting
Jennifer Shull
Set Decoration
Marvin March
Makeup Artist
Joe DiBella
Hairstylist
Vivienne Walker
Assistant Director
Fred T. Gallo
Carpenter
Ron Frazier
Sound mixer
Jerry Jost
Boom Operator
Joseph Kite
Sound Re-Recording Mixer
Tex Rudloff
Sound Effects Editor
Frank E. Warner
Special Effects
Augie Lohman
First Assistant Camera
Robert Edesa
Stunts
Maurice Marks
Gaffer
Norman Harris
Camera Operator
Roger Shearman Jr.
Still Photographer
Mel Traxel
Assistant Editor
Michael A. Stevenson
Title Designer
Wayne Fitzgerald
Production Design
Stephen B. Grimes
Associate Producer
Roger M. Rothstein
Second Assistant Director
David Sosna
Music Editor
George Probert
Editorial Staff
John Brice
Art Direction
Harry Kemm
Costumer
Tony Faso
Agnes G. Henry
Assistant Production Manager
Shari Leibowitz
Dialogue Coach
George Rondo
Key Grip
Richard Moran
Finance
Vince Martinez
Assistant Costume Designer
Mary Malin
Unit Publicist
Carol Shapiro
Producer's Assistant
Frank Bueno
Continuity
Julia Tucker
Property Master
Terry E. Lewis