Casting (19)
Kurt Russell
MacReady
Keith David
Childs
Wilford Brimley
Blair
T.K. Carter
Nauls
David Clennon
Palmer
Richard Dysart
Dr. Copper
Charles Hallahan
Norris
Peter Maloney
Bennings
Richard Masur
Clark
Donald Moffat
Garry
Joel Polis
Fuchs
Thomas G. Waites
Windows
Norbert Weisser
Norwegian
Larry Franco
Norwegian Passenger with Rifle
Nate Irwin
Helicopter Pilot
William Zeman
Pilot
Jed
The Thing (uncredited)
John Carpenter
Norwegian (video footage) (uncredited)
Adrienne Barbeau
Computer (voice) (uncredited)