Charlton Heston
George Taylor
James Whitmore
President of the Assembly
Woodrow Parfrey
Dr. Maximus
Martin Abrahams
Human in Cage (uncredited)
Army Archerd
Gorilla (uncredited)
James Bacon
Ape (uncredited)
Erlynn Mary Botelho
Gorilla (uncredited)
Priscilla Boyd
Human #1 (uncredited)
Eldon Burke
Gorilla (uncredited)
David Chow
Chimpanzee (uncredited)
Billy Curtis
Child Ape (uncredited)
Frank Delfino
Child Ape (uncredited)
Buddy Douglas
Child Ape (uncredited)
Chuck Fisher
Gorilla (uncredited)
William Graeff Jr.
Gorilla (uncredited)
Lars Hensen
Gorilla (uncredited)
Irvin 'Zabo' Koszewski
Gorilla (uncredited)
Norma Jean Kron
Chimpanzee (uncredited)
Robert Lombardo
Gorilla Photographer (uncredited)
Jerry Maren
Child Ape (uncredited)
Cass Martin
Chimpanzee (uncredited)
Stephan Merjanian
Gorilla (uncredited)
Harry Monty
Child Ape (uncredited)
John Quijada
Gorilla (uncredited)
Smokey Roberds
Chimpanzee (uncredited)
Dave Rodgers
Gorilla (uncredited)
Jane Ross
Human (uncredited)
George Sasaki
Chimpanzee (uncredited)
Felix Silla
Child Gorilla (uncredited)
Emory Souza
Child Ape (uncredited)
Dianne Stanley
Astronaut Stewart (uncredited)
Joe Tornatore
Gorilla (uncredited)