Richard Dreyfuss character Roy Neary
François Truffaut character Claude Lacombe
Teri Garr character Ronnie Neary
Melinda Dillon character Jillian Guiler
Bob Balaban character David Laughlin
J. Patrick McNamara character Project Leader
Warren J. Kemmerling character Wild Bill
Roberts Blossom character Farmer
Phil Dodds character ARP Musician
Cary Guffey character Barry Guiler
Shawn Bishop character Brad Neary
Adrienne Campbell character Sylvia Neary
Justin Dreyfuss character Toby Neary
Lance Henriksen character Robert
Merrill Connally character Team Leader
Amy Douglass character Implantee
Gene Dynarski character Ike
Carl Weathers character Military Policeman
Norman Bartold character Norman Bartold
F.J. O'Neil character ARP Project Member
Hal Barwood character Returnee #2 Flt. 19
Matthew Robbins character Returnee #3 Flt. 19
Gene Rader character Hawker
Daniel Nunez character Federale
Chuy Franco character Federale
Luis Contreras character Federale
Galen Thompson character Special Forces
John Dennis Johnston character Special Forces
Robert Broyles character Dirty Tricks #3
Monty Jordan character Special Forces Commander / Helicopter Pilot (uncredited)
Basil Hoffman character Longly (uncredited)
Stephen Powers character UN Observer (uncredited)
George DiCenzo character Major Benchley
Alexander Lockwood character Implantee
Josef Sommer character Larry Butler
Bill Thurman character Air Traffic
James Keane character Radio Telescope Team
J. Allen Hynek character Himself - Smoking Pipe at Landing Site (uncredited)
Howard K. Smith character Howard K. Smith (uncredited)
Philip Dodds character Jean Claude
Mary Gafrey character Mrs. Harris
Michael J. Dyer character Himself
Roger Ernest character Highway Patrolman
Randy Hermann character Returnee #1 Flt. 19
David Anderson character Air Traffic Controller
Richard L. Hawkins character Air Traffic Controller
Craig Shreeve character Air Traffic
Roy E. Richards character Air East Pilot
Eumenio Blanco character Federale
Dennis McMullen character Radio Telescope Team
Cy Young character Radio Telescope Team
Tom Howard character Radio Telescope Team
Richard Stuart character Truck Dispatcher
Bob Westmoreland character Load Dispatcher
Matt Emery character Support Leader
John Ewing character Dirty Tricks #1
Kirk Raymond character Dirty Tricks #4
Keith Atkinson character Dirty Tricks #2
