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

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

Daniel Nunez

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

Randy Hermann

Returnee #1 Flt. 19

David Anderson

Air Traffic Controller

Richard L. Hawkins

Air Traffic Controller

Tom Howard

Radio Telescope Team

Keith Atkinson

Dirty Tricks #2

Monty Jordan

Special Forces Commander / Helicopter Pilot (uncredited)

Basil Hoffman

Longly (uncredited)

J. Allen Hynek

Man Smoking Pipe at Landing Site (uncredited)

Howard K. Smith

Howard K. Smith (uncredited)