Roddy McDowall

Cornelius

Kim Hunter

Dr. Zira

Bradford Dillman

Dr. Lewis Dixon

Natalie Trundy

Dr. Stephanie 'Stevie' Branton

Eric Braeden

Dr. Otto Hasslein

William Windom

The President

Sal Mineo

Dr. Milo

Albert Salmi

E-1

Jason Evers

E-2

John Randolph

Committee Chairman

Harry Lauter

General Winthrop

M. Emmet Walsh

Aide

Roy Glenn

Lawyer (as Roy E. Glenn Sr.)

Peter Forster

Cardinal

Norman Burton

Army Officer

William Woodson

Naval Officer

Tom Lowell

Orderly

Gene Whittington

Marine Captain

Donald Elson

Curator

Bill Bonds

TV Newscaster

Army Archerd

Referee

James Bacon

General Faulkner

Ricardo Montalban

Armando

John Alderman

Marine Corporal (uncredited)

Alan Baxter

General (uncredited)

Jack Berle

Secretary of State (uncredited)

Paul Bradley

Official at Briefing (uncredited)

Karl Bruck

German Newscaster (uncredited)

Jeff Burton

Dodge (archive footage) (uncredited)

Sam Chew Jr.

Undetermined (uncredited)

Robert Cole

Reporter (uncredited)

Walker Edmiston

Talking Baby Chimp (uncredited) (voice)

James Franciscus

Brent (archive footage) (uncredited)

Sig Frohlich

Spectator (uncredited)

James W. Gavin

Helicopter Pilot (uncredited)

George Golden

Official at Briefing (uncredited)

James Gonzalez

Official at Briefing (uncredited)

Joe Gray

Bodyguard (uncredited)

Robert Gunner

Landon (archive footage) (uncredited)

Bob Harks

Aide (uncredited)

Linda Harrison

Nova (archive footage) (uncredited)

Elizabeth Harrower

Reporter at Hotel (uncredited)

Robert Hitchcock

Reporter (uncredited)

Shep Houghton

Bystander (uncredited)

Joseph La Cava

Waiter (uncredited)

Robert Nichols

Reporter (uncredited)

Ron Pinkard

Undetermined (uncredited)

Janos Prohaska

Heloise (uncredited)

Tony Regan

Reporter at Hotel (uncredited)

Stephen Roberts

Gen. Brody (uncredited)

Hank Robinson

Reporter (uncredited)

James B. Sikking

Control Room Officer (uncredited)

Jack Slate

Reporter (uncredited)

Arthur Tovey

Official at Briefing (uncredited)

William Tregoe

Hotel Receptionist (uncredited)

Don Taylor

Director

Paul Dehn

Guión, Guión Adaptado

Pierre Boulle

Personajes

Joseph F. Biroc

Director de Fotografía

Jerry Goldsmith

Compositor de la Música Original

Dean Vernon

Sound

Theodore Soderberg

Sound

Arthur P. Jacobs

Productor

20th Century Fox

Compañía de Produccion

Frank Capra, Jr.

Productor Asociado

Marion Rothman

Editor

William J. Creber

Dirección Artística

Jack Martin Smith

Dirección Artística

Walter M. Scott

Dirección Artística

Stuart A. Reiss

Dirección Artística

Howard A. Anderson III

Special Effects Coordinator