Keir Dullea
Dr. David Bowman
Gary Lockwood
Dr. Frank Poole
William Sylvester
Dr. Heywood Floyd
Douglas Rain
HAL 9000 (voice)
Daniel Richter
Moonwatcher
Leonard Rossiter
Dr. Andrei Smyslov
Robert Beatty
Dr. Ralph Halvorsen
Sean Sullivan
Dr. Roy Michaels
Frank W. Miller
Mission Controller (voice)
Ed Bishop
Aries-1B Lunar Shuttle Captain
Alan Gifford
Poole's Father
Edwina Carroll
Aries-1B Stewardess
Heather Downham
Stewardess
Terry Duggan
Ape Attacked by Leopard
Richard Woods
Ape Killed by Moon-Watcher
Maggie London
Hostess in Elevator (uncredited)
Chela Matthison
Receptionist (uncredited)
Judy Keirn
Voice Print Identification Girl (uncredited)
Vivian Kubrick
Floyd's Daughter (uncredited)
Kenneth Kendall
BBC-12 Announcer (uncredited)
Kevin Scott
Miller (uncredited)
Martin Amor
Interviewer (uncredited)
S. Newton Anderson
Young Man (uncredited)
Sheraton Blount
(uncredited)
Penny Francis
(uncredited)
Marcella Markham
(uncredited)
Irena Marr
Russian Scientist (uncredited)
Krystyna Marr
Russian Scientist (uncredited)
Burnell Tucker
TMA-1 Site Photographer (uncredited)
John Swindells
TMA-1 Site Technician #1 (uncredited)
John Clifford
TMA-1 Site Technician #2 (uncredited)
Stanley Kubrick
(voice) (uncredited)
Harry Fielder
Moonwalker (uncredited)
