Caesar
Roddy McDowall
Breck
Don Murray
Hoskyns
H.M. Wynant
Aldo
David Chow
Frank - Gorilla
Buck Kartalian
Policeman
John Dennis
2nd Policeman
Paul Comi
Auctioneer
Gordon Jump
Announcer
Dick Spangler
Ape With Chain
Hector Soucy
Ape (uncredited)
James Bacon
Riot Control Commander in Plaza (uncredited)
Rayford Barnes
Armando
Ricardo Montalban
Man at Auction (uncredited)
William Bryant
Book Store Owner (uncredited)
Jean Byron
Controller (uncredited)
Sam Chew Jr.
Auction Attendee (uncredited)
Francis De Sales
Peter Eastman
Cafe Customer (uncredited)
Erin Fleming
Jailguard (uncredited)
Daniel Keough
Ron Pinkard
Restaurant Chef (uncredited)
Jeffrey Sayre
Woman in Plaza (uncredited)
Ruth Foster
MacDonald
Hari Rhodes
Kolp
Severn Darden
Busboy
Lou Wagner
Lisa
Natalie Trundy
Commission Chairman
John Randolph
Mrs. Riley
Asa Maynor
Zelda
Joyce Haber
Stunts
Eddie Smith
Gary Epper
Director
J. Lee Thompson
Craig R. Baxley
Tony Brubaker
Nick Dimitri
Erik Cord
Makeup Supervisor
Daniel C. Striepeke
George P. Wilbur
Eddie Hice
Gene LeBell
Characters
Pierre Boulle
Henry Kingi
Tony Epper
Producer
Arthur P. Jacobs
Alan Gibbs
Screenplay
Paul Dehn
Editor
Marjorie Fowler
Alan Jaggs
Director of Photography
Bruce Surtees
Original Music Composer
Tom Scott
Unit Publicist
Jack Hirshberg
Title Designer
Don Record
Bennie E. Dobbins
Alex Sharp
Richard E. Butler
Wally Rose
Glenn Randall Jr.
Regina Parton
Larry Duran
Paula Crist
Regis Parton
Fred Waugh
Richard Washington
Stunt Coordinator
Paul Stader
Whitey Hughes
Associate Producer
Frank Capra, Jr.
Troy Melton
Hairstylist
Jan Van Uchelen
Makeup Artist
Jack Barron
Carol Pershing
Unit Production Manager
William Eckhardt
Special Effects
Johnny Borgese
Joe DiBella
Costume Design
Morton Haack
Makeup Designer
John Chambers
Set Decoration
Norman Rockett
Assistant Director
David 'Buck' Hall
Special Effects Makeup Artist
Verne Langdon
Art Direction
Philip M. Jefferies
Sound
Herman Lewis
Production Design
Second Assistant Director
Jack Stubbs
Don J. Bassman