EnglishRichard Dreyfuss as Roy Neary
François Truffaut as Claude Lacombe
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
Roberts Blossom as Farmer
Philip Dodds as Jean Claude
Cary Guffey as Barry Guiler
Shawn Bishop as Brad Neary
Adrienne Campbell as Sylvia 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 Tollbooth Attendant
Josef Sommer as Larry Butler
Rev Michael J Dyer as Himself
Roger Ernest as Highway Patrolman
Carl Weathers as MP
FJ O'Neil as ARP Project Member
Phil Dodds as ARP Musician
Randy Hermann as Frank Taylor (Returnee #1 Flt 19)
Hal Barwood as Harry Wallclage (Returnee #2 Flt 19)
Matthew Robbins as Matthew McMichaels (Returnee #3 Flt 19)
David Anderson as Air Traffic Controller
Richard L Hawkins as Air Traffic Controller
Craig Shreeve as Air Traffic Controller
Bill Thurman as Air Traffic Controller
Roy E Richards as Air East Pilot
Gene Rader as Hawker
Eumenio Blanco as Federale
Daniel Núñez as Federale
Chuy Franco as Federale
Luis Contreras as Federale
James Keane as Radiotelescope Team
Dennis McMullen as Radiotelescope Team
Cy Young as Radiotelescope Team
Tom Howard as Radiotelescope Team
Richard Stuart as Truck Dispatcher
Bob Westmoreland as Load Dispatcher
Matt Emery as Support Leader
Galen Thompson as Special Forces Trooper
John Dennis Johnston as Special Forces Trooper
John Ewing as Dirty Tricks
Keith Atkinson as Dirty Tricks
Robert Broyles as Dirty Tricks
Kirk Raymond as Dirty Tricks
Basil Hoffman as Longly
J Allen Hynek as Himself - Smoking Pipe at Landing Site
Monty Jordan as Special Forces Commander/Helicopter Pilot
Stephen Powers as UN Observer
Howard K Smith as Himself - TV News Anchor