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