Roy Neary
Claude Lacombe
Ronnie Neary
Jillian Guiler
David Laughlin
Project Leader
Wild Bill
Farmer
ARP Musician
Barry Guiler
Brad Neary
Sylvia Neary
Toby Neary
Robert
Team Leader
Implantee
Ike
Military Policeman
Norman Bartold
ARP Project Member
Returnee #2 Flt. 19
Returnee #3 Flt. 19
Hawker
Federale
Special Forces
Dirty Tricks #3
Major Benchley
Larry Butler
Air Traffic
Radio Telescope Team
Jean Claude
Mrs. Harris
Himself
Highway Patrolman
Returnee #1 Flt. 19
Air Traffic Controller
Air East Pilot
Truck Dispatcher
Load Dispatcher
Support Leader
Dirty Tricks #1
Dirty Tricks #4
Dirty Tricks #2
Special Forces Commander / Helicopter Pilot (uncredited)
Longly (uncredited)
UN Observer (uncredited)
Man Smoking Pipe at Landing Site (uncredited)
Howard K. Smith (uncredited)