导演 史蒂文·斯皮尔伯格

Roy Neary 理查德·德莱福斯

Claude Lacombe 弗朗索瓦·特吕弗

Ronnie Neary 泰瑞·加尔

Jillian Guiler 梅琳达·狄龙

David Laughlin 鲍勃·巴拉班

Project Leader J·帕特里克·麦克纳马拉

Wild Bill 沃伦·肯梅灵

Farmer 罗伯茨·斯科特

ARP Musician 菲尔·多兹

Barry Guiler Cary Guffey

Brad Neary Shawn Bishop

Sylvia Neary Adrienne Campbell

Toby Neary Justin Dreyfuss

Robert 兰斯·亨利克森

Team Leader Merrill Connally

Implantee Amy Douglass

Ike 吉恩·戴纳斯基

Military Policeman 卡尔·韦瑟斯

Norman Bartold Norman Bartold

ARP Project Member F.J. O'Neil

Returnee #2 Flt. 19 哈尔·巴伍德

Returnee #3 Flt. 19 马修·罗宾斯

Hawker Gene Rader

Federale Daniel Nunez

Federale Chuy Franco

Federale Luis Contreras

Special Forces Galen Thompson

Special Forces John Dennis Johnston

Dirty Tricks #3 Robert Broyles

Major Benchley 乔治·迪森佐

Implantee Alexander Lockwood

Larry Butler 约瑟夫·索默

Air Traffic Bill Thurman

Radio Telescope Team James Keane

Jean Claude Philip Dodds

Mrs. Harris Mary Gafrey

Himself Michael J. Dyer

Highway Patrolman Roger Ernest

Returnee #1 Flt. 19 Randy Herman

Air Traffic Controller David Anderson

Air Traffic Controller Richard L. Hawkins

Air Traffic Craig Shreeve

Air East Pilot Roy E. Richards

Federale Eumenio Blanco

Radio Telescope Team Dennis McMullen

Radio Telescope Team Cy Young

Radio Telescope Team Tom Howard

Truck Dispatcher Richard Stuart

Load Dispatcher Bob Westmoreland

Support Leader Matt Emery

Dirty Tricks #1 John Ewing

Dirty Tricks #4 Kirk Raymond

Dirty Tricks #2 Keith Atkinson

Special Forces Commander / Helicopter Pilot (uncredited) Monty Jordan

Longly (uncredited) Basil Hoffman

UN Observer (uncredited) Stephen Powers

Man Smoking Pipe at Landing Site (uncredited) J. Allen Hynek

Howard K. Smith (uncredited) Howard K. Smith