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
Director of Photography
Bruce Surtees
Editor
Alan Jaggs
Marjorie Fowler
Original Music Composer
Tom Scott
Unit Publicist
Jack Hirshberg
Title Designer
Don Record
Richard E. Butler
Regina Parton
Richard Washington
Paula Crist
Regis Parton
Larry Duran
Bennie E. Dobbins
Glenn Randall Jr.
Alex Sharp
Wally Rose
Fred Waugh
Stunt Coordinator
Paul Stader
Whitey Hughes
Associate Producer
Frank Capra, Jr.
Troy Melton
Production Design
Philip M. Jefferies
Costume Design
Morton Haack
Sound
Don J. Bassman
Makeup Artist
Joe DiBella
Set Decoration
Norman Rockett
Assistant Director
David 'Buck' Hall
Hairstylist
Carol Pershing
Jack Barron
Jan Van Uchelen
Unit Production Manager
William Eckhardt
Herman Lewis
Makeup Designer
John Chambers
Special Effects
Johnny Borgese
Second Assistant Director
Jack Stubbs
Art Direction
Special Effects Makeup Artist
Verne Langdon