- Frank Miller - Mission Controller
- Ed Bishop - Aries-1B Lunar Shuttle Captain
- Edwina Carroll - Aries-1B Stewardess
- Heather Downham - Stewardess
- Penny Brahms - Stewardess
- Maggie London - Stewardess
- Chela Matthison - Stewardess
- Judy Kiern - Voiceprint Identification Girl
- Alan Gifford - Poole's Father
- Ann Gillis - Poole's Mother
- Vivian Kubrick - Floyd's daughter (uncredited)
- Kenneth Kendall - BBC-12 Announcer
- Kevin Scott - Miller
- Martin Amor - Interviewer Martin Amor
- Glenn Beck - Astronaut
- Mike Lovell - Astronaut
- John Ashley - Ape
- Jimmy Bell - Ape
- David Charkham - Ape
- Simon Davis - 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
- Tony Jackson - Ape
- John Jordan - Ape
- Scott MacKee - Ape
- Laurence Marchant - Ape
- Darryl Paes - Ape
- Joe Refalo - Ape
- Andy Wallace - Ape
- Bob Wilyman - Ape
- Richard Woods - Ape Killed by Moon-Watcher
- S. Newton Anderson - Young Man (uncredited)
- Sheraton Blount - (uncredited)
- Ann Bormann - (uncredited)
- Julie Croft - (uncredited)
- Penny Francis - (uncredited)
- Marcella Markham - (uncredited)
- Irena Marr - Russian Scientist (uncredited)
- Krystyna Marr - Russian Scientist (uncredited)
- Kim Neil - (uncredited)
- Jane Pearl - (uncredited)
- Penny Pearl - (uncredited)
- Burnell Tucker - TMA-1 Site Photographer (uncredited)
- John Swindells - TMA-1 Site Technician #1 (uncredited)
- John Clifford - TMA-1 Site Technician #2 (uncredited)
- Anthony Jackson - Ape
- Frank W. Miller - Mission Controller
- Harry Fielder - Moonwalker (uncredited)
- Derek Cracknell
- Stanley Kubrick
- Arthur C. Clarke
- James Liggat
Capítulo disponible en las siguientes plataformas:
