Richard Dreyfuss

Roy Neary

François Truffaut

Claude Lacombe

Teri Garr

Ronnie Neary

Melinda Dillon

Jillian Guiler

Bob Balaban

David Laughlin

J. Patrick McNamara

Project Leader

Warren J. Kemmerling

Wild Bill

Roberts Blossom

Farmer

Phil Dodds

ARP Musician

Cary Guffey

Barry Guiler

Shawn Bishop

Brad Neary

Adrienne Campbell

Sylvia Neary

Justin Dreyfuss

Toby Neary

Lance Henriksen

Robert

Merrill Connally

Team Leader

Amy Douglass

Implantee

Gene Dynarski

Ike

Carl Weathers

Military Policeman

Norman Bartold

Norman Bartold

F.J. O'Neil

ARP Project Member

Hal Barwood

Returnee #2 Flt. 19

Matthew Robbins

Returnee #3 Flt. 19

Gene Rader

Hawker

Daniel Nunez

Federale

Chuy Franco

Federale

Luis Contreras

Federale

Galen Thompson

Special Forces

John Dennis Johnston

Special Forces

Robert Broyles

Dirty Tricks #3

George DiCenzo

Major Benchley

Alexander Lockwood

Implantee

Josef Sommer

Larry Butler

Bill Thurman

Air Traffic

James Keane

Radio Telescope Team

Philip Dodds

Jean Claude

Mary Gafrey

Mrs. Harris

Michael J. Dyer

Himself

Roger Ernest

Highway Patrolman

Randy Herman

Returnee #1 Flt. 19

David Anderson

Air Traffic Controller

Richard L. Hawkins

Air Traffic Controller

Craig Shreeve

Air Traffic

Roy E. Richards

Air East Pilot

Eumenio Blanco

Federale

Dennis McMullen

Radio Telescope Team

Cy Young

Radio Telescope Team

Tom Howard

Radio Telescope Team

Richard Stuart

Truck Dispatcher

Bob Westmoreland

Load Dispatcher

Matt Emery

Support Leader

John Ewing

Dirty Tricks #1

Kirk Raymond

Dirty Tricks #4

Keith Atkinson

Dirty Tricks #2

Monty Jordan

Special Forces Commander / Helicopter Pilot (uncredited)

Basil Hoffman

Longly (uncredited)

Stephen Powers

UN Observer (uncredited)

J. Allen Hynek

Man Smoking Pipe at Landing Site (uncredited)

Howard K. Smith

Howard K. Smith (uncredited)