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

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

Philip Dodds

Character: Jean Claude

Mary Gafrey

Character: Mrs. Harris

Michael J. Dyer

Character: Himself

Roger Ernest

Character: Highway Patrolman

Randy Herman

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

Monty Jordan

Character: Special Forces Commander / Helicopter Pilot (uncredited)

Basil Hoffman

Character: Longly (uncredited)

Stephen Powers

Character: UN Observer (uncredited)

J. Allen Hynek

Character: Man Smoking Pipe at Landing Site (uncredited)

Howard K. Smith

Character: Howard K. Smith (uncredited)