MacReady
Blair (as A. Wilford Brimley)
Nauls
Palmer
Childs
Dr. Copper
Norris
Bennings
Clark
Garry
Fuchs
Windows (as Thomas Waites)
Norwegian
Norwegian Passenger with Rifle
Helicopter Pilot
Pilot
Computer (voice) (uncredited)
Norwegian (video footage) (uncredited)
Dog Thing (uncredited)