François Truffaut as Claude Lacombe (as Francois Truffaut) jumio John sweet Ben lii independent heart gov you wegton India) duoton kath as Lizzie bule Steve mi ner earth tommy my
Teri Garr as Ronnie Neary
Melinda Dillon as Jillian Guiler
Bob Balaban as David Laughlin
J. Patrick McNamara as Project Leader
Warren J. Kemmerling as Wild Bill (as Warren Kemmerling)
Roberts Blossom as Farmer
Philip Dodds as Jean Claude
Cary Guffey as Barry Guiler
Shawn Bishop as Brad Neary
Adrienne Campbell as Silvia Neary
Justin Dreyfuss as Toby Neary
Lance Henriksen as Robert
Merrill Connally as Team Leader
George DiCenzo as Major Benchley
Amy Douglass as Implantee
Alexander Lockwood as Implantee
Gene Dynarski as Ike
Mary Gafrey as Mrs. Harris
Norman Bartold as Ohio Tolls
Josef Sommer as Larry Butler
Michael J. Dyer as Self (as Rev. Michael J. Dyer)
Roger Ernest as Highway Patrolman
Carl Weathers as Military Police
F.J. O'Neil as ARP Project Member (as F. J. O'Neil)
Phil Dodds as ARP Musician
Randy Mark Herman as Returnee #1 Flt. 19
Hal Barwood as Returnee #2 Flt. 19
Matthew Robbins as Returnee #3 Flt. 19
David Anderson as Air Traffic Controller
Richard L. Hawkins as Air Traffic Controller
Craig Shreeve as Air Traffic
Bill Thurman as Air Traffic
Roy E. Richards as Air East Pilot
Gene Rader as Hawker
Eumenio Blanco as Federale
Daniel Nunez as Federale
Chuy Franco as Federale
Luis Contreras as Federale
James Keane as Radio Telescope Team
Dennis McMullen as Radio Telescope Team
Cy Young as Radio Telescope Team
Tom Howard as Radio Telescope Team
Richard Stuart as Truck Dispatcher
Bob Westmoreland as Load Dispatcher
Matt Emery as Support Leader
Galen Thompson as Special Forces
John Dennis Johnston as Special Forces
John Ewing as Dirty Tricks #1
Keith Atkinson as Dirty Tricks #2
Robert Broyles as Dirty Tricks #3
Kirk Raymond as Dirty Tricks #4
Uncredited[]
Bennett Wayne Dean Sr. as Scientist
Danyi Deats as Alien
Basil Hoffman as Longly
J. Allen Hynek as Man Smoking Pipe at Landing Site
Jenny Inge as #1 Alien
Monty Jordan as Helicopter Pilot / Special Forces Commander
