Dr. Dave Bowman

Keir Dullea

Dr. Frank Poole

Gary Lockwood

Dr. Haywood R. Floyd

William Sylvester

Moonwatcher

Daniel Richter

HAL 9000 (voice)

Douglas Rain

Dr. Andrei Smyslov

Leonard Rossiter

Dr. Ralph Halvorsen

Robert Beatty

Elena

Margaret Tyzack

Dr. Roy Michaels

Sean Sullivan

Richard Wood

Mission Controller (voice)

Frank W. Miller

Ape

Brian Hawley

Astronaut

Bill Weston

Ape

Bob Wilyman

Aries-1B Lunar Shuttle Captain

Ed Bishop

Ape

Danny Grover

Astronaut

Glenn Beck

Ape

Andy Wallace

Poole's Father

Alan Gifford

Ape

David Fleetwood

Poole's Mother

Ann Gillis

Ape

Joe Refalo

Aries-1B Stewardess

Edwina Carroll

Stewardess

Penny Brahms

Ape Attacked by Leopard

Terry Duggan

Ape

Darryl Paes

Stewardess

Heather Downham

Ape

Peter Delmar

Astronaut

Mike Lovell

Ape

Laurence Marchant

Astronaut

John Ashley

Ape

Jimmy Bell

Ape

Jonathan Daw

Ape

Scott MacKee

Ape

David Charkham

Simon Davis

Ape

Keith Denny

Ape

John Jordan

Tony Jackson

Ape

David Hines

Ape

Anthony Jackson

Floyd's Daughter (uncredited)

Vivian Kubrick

Ape Killed by Moon-Watcher

Richard Woods

Mission Controller

Frank Miller

Hostess in Elevator (uncredited)

Maggie London

Receptionist (uncredited)

Chela Matthison

BBC-12 Announcer (uncredited)

Kenneth Kendall

Miller (uncredited)

Kevin Scott

(uncredited)

Sheraton Blount

(uncredited)

Julie Croft

(uncredited)

Marcella Markham

(uncredited)

Jane Pearl

TMA-1 Site Photographer (uncredited)

Burnell Tucker

TMA-1 Site Technician #1 (uncredited)

John Swindells

TMA-1 Site Technician #2 (uncredited)

John Clifford

Astronaut Breathing (voice) (uncredited)

Stanley Kubrick

Moonwalker (uncredited)

Harry Fielder