Riven

Roddy McDowall

as Cornelius

Kim Hunter

as Dr. Zira

Bradford Dillman

as Dr. Lewis Dixon

Natalie Trundy

as Dr. Stephanie 'Stevie' Branton

Eric Braeden

as Dr. Otto Hasslein

William Windom

as The President

Sal Mineo

as Dr. Milo

Albert Salmi

as E-1

Jason Evers

as E-2

John Randolph

as Committee Chairman

Harry Lauter

as General Winthrop

M. Emmet Walsh

as Aide

Roy Glenn

as Lawyer (as Roy E. Glenn Sr.)

Peter Forster

as Cardinal

Norman Burton

as Army Officer

William Woodson

as Naval Officer

Tom Lowell

as Orderly

Gene Whittington

as Marine Captain

Donald Elson

as Curator

Bill Bonds

as TV Newscaster

Army Archerd

as Referee

James Bacon

as General Faulkner

Ricardo Montalban

as Armando

John Alderman

as Marine Corporal (uncredited)

Alan Baxter

as General (uncredited)

Jack Berle

as Secretary of State (uncredited)

Paul Bradley

as Official at Briefing (uncredited)

Karl Bruck

as German Newscaster (uncredited)

Sam Chew Jr.

as Undetermined (uncredited)

Robert Cole

as Reporter (uncredited)

Walker Edmiston

as Talking Baby Chimp (uncredited) (voice)

Sig Frohlich

as Spectator (uncredited)

James W. Gavin

as Helicopter Pilot (uncredited)

George Golden

as Official at Briefing (uncredited)

James Gonzalez

as Official at Briefing (uncredited)

Joe Gray

as Bodyguard (uncredited)

Bob Harks

as Aide (uncredited)

Linda Harrison

as Nova (archive footage) (uncredited)

Elizabeth Harrower

as Reporter at Hotel (uncredited)

Shep Houghton

as Bystander (uncredited)

Joseph La Cava

as Waiter (uncredited)

Robert Nichols

as Reporter (uncredited)

Ron Pinkard

as Undetermined (uncredited)

Janos Prohaska

as Heloise (uncredited)

Tony Regan

as Reporter at Hotel (uncredited)

Stephen Roberts

as Gen. Brody (uncredited)

Hank Robinson

as Reporter (uncredited)

James B. Sikking

as Control Room Officer (uncredited)

Jack Slate

as Reporter (uncredited)

Arthur Tovey

as Official at Briefing (uncredited)

William Tregoe

as Hotel Receptionist (uncredited)

William Beckley

as British News Anchor (uncredited)

Pierre Boulle

Characters

Don Taylor

Director

William J. Creber

Art Direction

Stuart A. Reiss

Art Direction

Paul Dehn

Screenplay

Walter M. Scott

Art Direction

Marion Rothman

Editor

Jack Martin Smith

Art Direction

Howard A. Anderson III

Special Effects Coordinator

Arthur P. Jacobs

Producer

Joseph F. Biroc

Director of Photography

Jerry Goldsmith

Original Music Composer

Dean Vernon

Sound

Theodore Soderberg

Sound

Frank Capra, Jr.

Associate Producer

Alexander Courage

Orchestrator