Farrah Fawcett
Alex
Kirk Douglas
Major Adam
Harvey Keitel
Benson
Ed Bishop
Harding (uncredited)
Roy Dotrice
Benson (uncredited) (voice)
Jill Goldston
Woman on World Spaceways Ship (uncredited)
Douglas Lambert
Captain James (uncredited)
Christopher Muncke
2nd Crewman (uncredited)
Stephanie English
Technician (uncredited)
Vera Goulet
Technician (uncredited)