 | Jack Palance als Omus |
 | Carol Lynley als Nikki |
 | Barry Morse als Dr. John Caball |
 | John Ireland als Senator Smedley |
 | Nicholas Campbell als Jason Caball |
 | Anne-Marie Martin als Kim Smedley |
 | Greg Swanson als Sparks (voice) |
| Mark Parr als Sparks |
 | William Hutt als Lomax (voice) |
 | Ardon Bess als Merrick |
 | Lynda Mason Green als Lunar technician |
| Albert Humphries als Robot technician |
 | Bill Lake als Spacesuited man |
| Mike Cheda | Adaptation |
| H.G. Wells | Novel |
| George McCowan | Director |
| Joseph Glazner | Adaptation |
| William Davidson | Producer |
| Reginald H. Morris | Director of Photography |
| Harry Alan Towers | Executive Producer |
| Stan Cole | Editor |
| Bill Wood | Special Effects |
| Paul Hoffert | Original Music Composer |
| Wally Gentleman | Visual Effects |
| Gerry Holmes | Art Direction |
| John Danylkiw | Associate Producer |
| Martin Lager | Screenplay |
| Robert Hannah | Stunt Coordinator |
| Marilyn Stonehouse | Production Manager |
| Matt Tundo | Camera Operator |
| Karl Scherer | Sound Mixer |
| Gord Robinson | First Assistant Director |
| Blanche McDermaid | Continuity |
| Chris Holmes | Gaffer |
| Wilf Culley | Property Master |
| Larry S. Wells | Costume Designer |
| Bill Morgan | Makeup Artist |
| James Keeler | Hairdresser |
| Tom Finnen | Key Grip |
| Earle Fiset | Set Decoration |
| Patrick Drummond | Supervising Sound Editor |
| Dennis Drummond | Sound Editor |
| Fred Brennan | Sound Editor |
| Lydia Wazana | Sound Editor |
| David Appleby | Sound Re-Recording Mixer |
| Don White | Sound Re-Recording Mixer |
| Fred Geringer | Assistant Art Director |
| Gordon Langevin | Focus Puller |
| Herb Heritage | Boom Operator |
| Gordon Eldridge | Best Boy Grip |
| Mary E. McLeod | Wardrobe Master |
| Kenny Porter | Assistant Set Decoration |
| Michael MacDonald | Third Assistant Director |
| David Shepherd | Second Assistant Director |
| Michael O'Farrell | Assistant Editor |
| Bruce Lange | Assistant Editor |
| Steven Cole | Assistant Sound Editor |
| Michael Asti-Rose | Assistant Sound Editor |
| Tony Lucibello | Location Manager |
| Kristine M. Gilbert | Production Secretary |
| Barry Leyland | Production Accountant |
| Maria Armstrong | Casting |
| Ali Karnick | Casting |
| Anthony Bliss | Still Photographer |
| Joan Hounsell | Publicist |
| Paul Hoffert | Music Director |
| Paul Hoffert | Orchestrator |
| Jack Richardson | Music Producer |
