James Franciscus

Brent

Kim Hunter

Zira

Maurice Evans

Dr. Zaius

Charlton Heston

Taylor

Linda Harrison

Nova

Paul Richards

Mendez

Victor Buono

Fat Man

James Gregory

Ursus

David Watson

Cornelius

Jeff Corey

Caspay

Natalie Trundy

Albina

Thomas Gomez

Minister

Don Pedro Colley

Negro

Tod Andrews

Skipper

Gregory Sierra

Verger

Lou Wagner

Luicius

Army Archerd

Gorilla (uncredited)

James Bacon

Ape (uncredited)

Paul Frees

Ending Voiceover (uncredited) (voice)

Hank Robinson

Bomb Worshipper (uncredited)