Reparto (30)
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
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
Mike Lovell
Astronaut
John Ashley
Ape
Jimmy Bell
Ape
David Charkham
Ape
Keith Denny
Ape
Jonathan Daw
Ape
Péter Delmár
Ape
Terry Duggan
Ape Attacked by Leopard
David Fleetwood
Ape
Danny Grover
Ape
Brian Hawley
Ape
David Hines
Ape