Keir Dullea
Dr. David Bowman
Reparto
Gary Lockwood
Dr. Frank Poole
William Sylvester
Dr. Heywood Floyd
Douglas Rain
HAL 9000 (voice)
Daniel Richter
Moonwatcher
Leonard Rossiter
Dr. Andrei Smyslov
Margaret Tyzack
Elena
Robert Beatty
Dr. Ralph Halvorsen
Sean Sullivan
Dr. Roy Michaels
Frank W. Miller
Mission Controller (voice)
Bill Weston
Astronaut
Ed Bishop
Aries-1B Lunar Shuttle Captain
Glenn Beck
Astronaut
Alan Gifford
Poole's Father
Ann Gillis
Poole's Mother
Edwina Carroll
Aries-1B Stewardess
Penny Brahms
Stewardess
Heather Downham
Stewardess
