| Keir Dullea |
Dr. David 'Dave' Bowman, Mission Commander
|
| Gary Lockwood |
Dr. Frank Poole, Astronaut
|
| William Sylvester |
Dr. Heywood R. Floyd, National Council of Astronautics
|
| Daniel Richter |
Moonwatcher
|
| Leonard Rossiter |
Dr. Andre Smyslov, meets with Dr. Floyd at orbiting Hilton Hotel
|
| Margaret Tyzack |
Elena, meets with Dr. Floyd at orbiting Hilton Hotel
|
| Robert Beatty |
Dr. Halvorsen, Lunar Administrator
|
| Sean Sullivan |
Dr. Roy Michaels, Geophysicist
|
| Douglas Rain |
HAL 9000
|
| Frank Miller |
Mission Cotroller (voice)
|
