On screen
Cast
408 credited performers
Roy Thinnes
David Vincent
William Windom
Michael Tressider
Diana Hyland
Sherri Vikor
Kent Smith
Stan Arthur
William Woodson
Narrator (voice) (uncredited)
Michael Rennie
Magnus
John Milford
Sheriff Lou Carver
Lin McCarthy
Col. Archie Harmon
Simon Scott
Dr. Malcolm Gantley
Richard O'Brien
Prof. Charles McKay
Byron Keith
Air Crash Investigator
Anthony Eisley
Bob Torin
Morgan Jones
Reporter
Ray Kellogg
Policeman
Wayne Heffley
Sergeant
Hal Taggart
Pedestrian (uncredited)
Ron Nyman
Alien (uncredited)
John Ward
Trooper
Tina Menard
Maid
Harold Gould
Dr. Mailer
Hank Brandt
Joe Manners
William Stevens
Sergeant
Dabney Coleman
Capt. Mitchell Ross
William Wintersole
Carr
William Sargent
Dr. John Devin
Sam Edwards
Thatcher
Laurence Naismith
Professor Lindstrom
Patricia Smith
Edna Greely
Robert Knapp
Congressman Joe Bonning
Lawrence Montaigne
Man
James T. Callahan
Ed Gidney
Lew Brown
Aide
Dallas Mitchell
Jim Rogers
Robert Sorrells
Deputy Jim
J.D. Cannon
Police Lt. Ben Holman
Hal Baylor
Friendly Guard
James Daly
Gen. Samuel Arlington Concannon
Alfred Ryder
Ryder (Invader Leader)
Tom Palmer
Dorian
Douglas Henderson
Lieutenant Farley
Ford Rainey
George Grundy
Noah Keen
Paul Meyers
John Mayo
Weatherman
Ed Begley
Simon Carver
Don Ross
Ed Larson
Barney Phillips
Walt Anson
Mary Jackson
Hattie Willis
Byron Morrow
Gilbert
Suzanne Pleshette
Anne Gibbs
William Smithers
Adam Lane
Frank Marth
Alien
Katherine Justice
Janet Garner
James Devine
TV Man
Allen Emerson
Library Alien
Peter Mark Richman
Andrew Hatcher
Johnny Jensen
Frankie Reed
Robert H. Harris
Dr. Stanley Frederickson
Linden Chiles
Jeremy Mace
Craig Chudy
Alien
John S. Ragin
John Finney
Joanne Linville
Angela Smith
John Zaremba
General
Ross Elliott
Prof. Eliot Kramer
Joel Fluellen
Butler
Ross Hagen
Jorden
Lee Farr
Character not listed
Michael Harris
Mail Truck Driver
Susan Oliver
Joan Seeley
Paul Comi
Danny
R.G. Armstrong
Police Capt. Bill Battersea
Rayford Barnes
Alien Driver
Eduard Franz
Premier Thor Halvorsen
Ed Asner
Taugus
Christopher Shea
Jimmy
Gene Lyons
Sawyer
Troy Melton
Journalist
Ted Knight
Alien Air Force Major McEvoy
Donald Davis
Lucien
Dan Frazer
Reporter
Dawn Wells
Eileen Brown
Laurie Mock
Female Alien
Jerry Ayres
Groom
Diane Baker
Kathy Adams
Ellen Corby
Aunt Sara
Vaughn Taylor
Kemper
Skip Ward
Man
Bonnie Beecher
Woman
Roddy McDowall
Lloyd Lindstrom
Willard Sage
Lieutenant James
Dabbs Greer
The Minister
Jackie Kendall
Proprietress
Stuart Lancaster
Superintendent
Soon-Tek Oh
Houseboy
Mel Gallagher
Nurse
Roy N. Sickner
Cab Driver
Paul Gleason
Alien
Edward Andrews
Evans
Rodolfo Hoyos Jr.
Miguel
Argentina Brunetti
Luz
Roy Jenson
Alien
Val Avery
Manager
Ted Gehring
Cab Driver
Pedro Regas
Beggar
Tony Davis
Boy
Roberto Contreras
Guide
Pepe Callahan
Guide
Diana Van der Vlis
Eve Doneghan
Arthur Hill
Warren Doneghan
Theo Marcuse
Noel Markham
Peter Brocco
Millington
Carol Eve Rossen
Selene Lowell
Louise Latham
Joan Corman
John Larch
Greg Lucather
Frank Overton
Dr. Grayson
Jonathan Goldsmith
Kevin Ryan
Phillip Pine
Sgt. Hal Corman
Danni Sue Nolan
Nurse
Bill Erwin
Manager
Jack Lord
George Vikor
Joe Di Reda
Phil
Larry Duran
Houseboy
Max Kleven
Guard
Robert Emhardt
Oliver Ames
Kathleen Widdoes
Ellen Woods
Irene Tedrow
Clare Lapham
Nellie Burt
Lena Lapham
Logan Field
Carl Gidney
Jeanette Nolan
Miss Havergill
William Bramley
Constable Gabbard
Jim Halferty
Fred Danielson
Carey Loftin
Hank Braden
William Challee
Danielson
John Harmon
Cook
Andrew Duggan
General Theodore Beaumont
Robert Osterloh
Carl Wyeth
Wesley Addy
Tomkins
Rick Murray
Parking Attendant
David Armstrong
MP
K.L. Smith
Guard
Don Kennedy
Guard
James Whitmore
Harry Swain
William Talman
Colonel Griffith
Milton Selzer
A.J. Richards
Susan Strasberg
Diane Oberly
Ernest Sarracino
Leo Rinaldi
Mel Ruick
Minister
Ron Doyle
Rescuer
Raymond Guth
Guard
Robert Doyle
Sgt. Walter Ruddell
Paul Carr
Billy Stearns
Erik Holland
MP Alien
Harry Lauter
Alien
Jack Warden
Barney Cahill
Murray Matheson
Dr. Reynard
Barry Russo
Lt. Alvarado
David Sheiner
Mr. Burns
Clarke Gordon
Mr. Nova
Paul Pepper
Dispatcher
Garth Pillsbury
Intern
Bud Perkins
Bartender
Jacqueline Mayo
Sobbing Woman
Ted Markland
Alien
John Napier
Alien
Laura Devon
Susan Carver
Nancy Wickwire
Evelyn Bowers
Norman Fell
Neal Taft
Victor Brandt
Joey Taft
Gilchrist Stuart
Waiter
Garrison True
Doctor
Bill Fletcher
Alien
Ron Stokes
Alien at Controls
Joseph Campanella
Father Joe
Dean Harens
Dr. MacLeuen
Carlos Romero
Luis Perez
BarBara Luna
Lisa
John McLiam
Hotel Clerk
Edward Faulkner
Alien
Robert Walker Jr.
Nick Baxter
Lynn Loring
Madeline Flagg
Joseph V. Perry
Joe Bagely
Len Wayland
Deputy Wallace
Helen Kleeb
Mollly
Don Eitner
Webster
Mercedes Shirley
Woman Attendant
Ralph Thomas
Deputy in Charge
Peter Graves
Gavin Lewis
John Ericson
Hardy Smith
Strother Martin
Charlie Coogan
John Lupton
Maj. Clifford Banks
Richard X. Slattery
Riley
Paul Lukather
Correll
John Carter
Owens
Charles McDaniel
Roberts
Ollie O'Toole
Reporter
Steve Cory
Attendant
Julie Sommars
Grace Vincent
Burgess Meredith
Theodore Booth
Lloyd Gough
Joe McMullen
Russ Conway
Detective Harding
Mary Lou Taylor
Mrs. Endicott
Karen Norris
Miss Johnson
Peggy Lipton
Bride
Ralph Bellamy
Morgan Tate
Marlyn Mason
Carol Tate
Murray Hamilton
Lewis Dunhill
Wright King
Ed Tonkin
Harlan Warde
Ed Peterson
Paul Bryar
J.O. Brock
Larry Ward
Detective Carter
Garry Walberg
Detective Reagan
Kevin Burchett
Paul
Gordon Wescourt
Joey
Debi Storm
Victoria
Geoffrey Deuel
Teen
Stuart Nisbet
Coroner
Seymour Cassel
Driver
Antoinette Bower
Laurie Keller
Jason Evers
Maj. Dan Keller
Robert Brubaker
Gen. Winters
Forrest Compton
Capt. Chester Albertson
Burt Douglas
Capt. Burt Connors
Roy Engel
Dr. Frederick Rogers
Mort Mills
Mr. Arius
Anne Francis
Annie Rhodes
Charles Drake
Robert Morrison
Kelly Thordsen
Police Chief Sam Thorne
Sandy Kenyon
Alien Leader
Glenn Bradley
Doctor
Shirley Knight
Margaret Cook
Kevin McCarthy
Paul Cook
Leonard Stone
Ramsey
Robert Yuro
Simms
Walter Brooke
Danvers
Harry Hickox
Bowman
James Seay
Grayson
Paul Sorensen
Alien
Marlowe Jensen
Alien
Nan Martin
Dr. Maria McKinley
Harry Townes
Will Hale
Ron Hayes
Sheriff Gordon Clements
Mark Roberts
Dr. Sam Larousse
James B. Sikking
Capt. William Taft
Jon Lormer
Minister
Claudia Bryar
Townswoman
Phil Chambers
Townsman
Barbara Barrie
Gale Frazer
Paul Mantee
Deputy Vern Hammond
Richard Anderson
Blake
George Keymas
Lavin
Russell Thorson
Sheriff
Don Gordon
Charlie Gilman
Russell Johnson
James Bernard
Lynda Day George
Janet Wilk
Malcolm Atterbury
Judge Simonson
Bill Zuckert
Sgt. Bert Wisnovsky
John Rayner
Fred Wilk
Richard Hale
Fred Wilk Sr.
James McCallion
Brennan
Selette Cole
Miss Cole
Jason Wingreen
Court Clerk
Amy Douglass
Mrs. Wilk
Sid McCoy
John Lovell
Gene Hackman
Tom Jessup
Mark Miller
Jack Palay
John Randolph
Police Sgt. Ernie Goldhaver
Wayne Rogers
Police Lt. John Mattson
Noam Pitlik
Jerry Burns
Joel Davison
Earl Garber
Christine Matchett
Elizabeth Garber
James Gammon
Hal
Judee Morton
Mavis
Kevin Coughlin
Roy
Vince Howard
Frank
Brian Nash
Mike
Stephen Liss
Archie
Andrew Prine
Vern Corbett
Whit Bissell
Col. Harris
Susan Davis
Mrs. James
Tim McIntire
Hal
Tom Lowell
Steve
Kelly Jean Peters
Nicole
Walter Reed
Major
Bard Stevens
Ambulance Driver
Ian Wolfe
Secretary Knute Rosmundson
Ben Wright
Emissary
Peter Hobbs
Colonel
Martin West
Lieutenant
Vic Perrin
Hypnotist Alien
Don Lamond
Newsman
Victoria Hale
Hippie
William Boyett
Tressider's Man
Richard Eastham
Carl Vanders
Jay Lanin
Alquist's Aide
Albert Carrier
Frenchman
Hank Simms
Journalist
Pat Hingle
Brother Avery
Zina Bethune
Sister Claire
Roger Perry
Bill Shay
Sally Kellerman
Laura Crowell
Virginia Christine
Mrs. Thorne
Ed Peck
Darrow
Martin Blaine
Argyle
E.J. André
Dr. Henry Thorne
Bill Quinn
Police Lieutenant Eaton
Barbara Dodd
Miss Fox
Wilhelm von Homburg
Alien Patient
William Sumper
Cab Driver
Dana Wynter
Dr. Katherina Serret
Don Dubbins
Wesley J. Sanders
Fritz Weaver
Deputy Ambassador Peter Borke
Lawrence Dane
Josef Dansk
Peter Coe
Leo
Robert Patten
Murphy
Alex Rodine
Guard
Carol Lynley
Elyse Reynolds
Richard Karlan
Charles Roselli
Warren Parker
Arthur Singeiser
Rhys Williams
Professor Hellman
Maura McGiveney
Mary Torin
Kathleen Larkin
Lt. Sally Harper
Than Wyenn
Torberg
Mark Tapscott
Guard
Ed Long
Corridor Guard
Eddie Barth
Cab Driver
Karen Black
Claudia Stone
Ron Husmann
Sentry
Karl Held
Lieutenant
Nancy Kovack
June Murray
Martin Wolfson
William Mace
John Lasell
Bob Ferrara
John Stephenson
John Nivin
Walter Woolf King
Head Alien
Michael Tolan
Dr. Ted Willard
Michael Constantine
Dr. Martin Willard
Charles Bateman
Burt Newcomb
Booth Colman
Coroner Braemer
Rose Hobart
Housekeeper - Irma
Matt Pelto
Alien Clerk
Lynn Hobart
Alien Nurse
Ahna Capri
Joan Surrat
Ken Lynch
Lieutenant Conners
Pamela Curran
Louise
Warren Vanders
Earl
Don Chastain
Blake
Ed Prentiss
Stanley Leeds
Charles Stewart
Robertson
Donald Harron
Jeff Brower
Charles Aidman
Prof. Julian Reed
Bartlett Robinson
Art Llewellan
Lisabeth Field
Mrs. Fielding
Pat O'Hara
Scientist
Dort Clark
Security Officer
Chris Robinson
Mike Calvin
Nelson Olmsted
Amos Foster
Larry Gates
Weller
Roy Poole
Cort
John Kellogg
Dom
Barry Atwater
Dorcas
Mark Allen
Second Mate
Phyllis Thaxter
Sarah Concannon
Pat Cardi
Bill Concannon
Larry Thor
Dr. Bill Jacobs
Jan Merlin
Post
Craig Huebing
Willard
Jack Bannon
Junior Officer
Ed Deemer
Air Policeman
Raymond St. Jacques
James A. Baxter
Janet MacLachlan
Celia Baxter
Roscoe Lee Browne
Arnold Andrew Warren
Austin Willis
William Gehrig
Louis Gossett Jr.
Ollie
D'Urville Martin
Casey
Pepe Brown
Michael Baxter
Boyd 'Red' Morgan
Station Attendant
Barbara Hershey
Beth Ferguson
Arch Johnson
Father Paul
Marion Thompson
The Nun
Robert Biheller
Ricky
Arthur Franz
Capt. Jim Trent
Diana Muldaur
Claire
Barry Morse
Keith
Stephen Brooks
Officer Joe Nash
Herb Armstrong
Doctor Stark
Barry Cahill
Dorsey
Will Geer
Hank Willis
Dana Elcar
Sheriff Tom Halloway
Michael McGreevey
Eddie McKay
Eldon Quick
Antique Store Proprietor
Barry Williams
Boy
Stewart Moss
Hadley Jenkins
Alex Gerry
Senator Robert Breeding
Mary Gregory
Secretary
Lee Millar
Reporter
Ernest Harada
George - Waiter
Marcia Wallace
Courtroom Spectator (uncredited)
Dick Cherney
Police Officer (uncredited)
Ivan Bonar
Older Alien
Paul Bradley
Summit Attendee (uncredited)
Ralph Brooks
Photographer (uncredited)
Spencer Chan
Summit Attendee (uncredited)
James Gonzalez
Summit Attendee (uncredited)
Clark Ross
Summit Attendee (uncredited)
Cosmo Sardo
Summit Attendee (uncredited)
Arthur Tovey
Summit Attendee (uncredited)
George Ford
Restaurant Patron (uncredited)
Sig Frohlich
Bartender (uncredited)
Mark Russell
Alien (uncredited)
Jock Gaynor
Conner