Hal Bokar

Mr. Xeno

Richard Ney

Mrs. Dame

Chita Rivera

Deimos

Carroll O'Connor

Nick Adams

Harold J. Finley

Donald Pleasence

Dr. Evan Marshall

Larry Pennell

Narrator

Vic Perrin

Mary Kry

Miriam Hopkins

Jory Peters

Scott Marlowe

Leon Chambers

Howard Caine

Dr. James Hamilton / Major Roger Brothers

Gary Merrill

Lee Kinsolving

Prof. Stephen Grave

Michael Tolan

Allen Leighton / Paul Cameron / Trent

Robert Culp

Prof. Diana Brice

Ruth Roman

Sam Wanamaker

Sen. Orville

Peter Breck

Andro

Martin Landau

Simon Oakland

Stephen McNally

Ralph Meeker

William Lyons Selby

Sidney Blackmer

Col. Luke Stone

Ed Nelson

Lincoln Russell / Ben Fields

Philip Abbott

Radio DJ Gene 'Buddy' Maxwell

Lee Philips

GIA Agent Luis D. Spain

Don Gordon

David McCallum

Florinda Patten

Gloria Grahame

Joanna Frank

Lisa Lawrence

Olive Deering

Konig

Leonard Nimoy

Major Clint Anderson

Tim O'Connor

Nancy Malone

Vera Finley

Priscilla Morrill

General Crawford

Henry Brandon

Laurie Cameron

Salome Jens

Diana Sands

Dr. Phillip Gainer

Leonard Stone

Sgt. James Conover / Major Harold Giles

Ivan Dixon

Prof. Stuart Peters

Michael Forest

Ted Pearson

Phillip Pine

Major Roger Brothers / Dr. James Hamilton

Harry Guardino

General Juan Mercurio / Chino Rivera

Henry Silva

Maj. Jong

James Shigeta

Kenny Benjamin

Flip Mark

Carl Ford - TV Announcer

Lee Zimmer

Galaxy Being

Wm. O. Douglas

Richard Jaeckel

Lt. Bertram Cabot

John Considine

Prof. Ian Fraser

Peter Mark Richman

Edward Mulhare

Theresa 'Tess' Ames

Luana Anders

Gov. Lawrence K. Hillerman

George Macready

Phobos

Barry Morse

David Opatoshu

Mr. Byron Lomax

Jeff Corey

Gard Hayden

Buck Taylor

Dr. Tillyard / Detective Lt. Runyan

Douglas Henderson

Mrs. Clarke

Dee Hartford

Alan Maxwell

Cliff Robertson

Eva Fraser

Nina Foch

Gen. Lee Stocker

Alex Nicol

Gaby Christian

BarBara Luna

Janet Blair

Pvt. Arthur Dix

Martin Sheen

Michael Higgins

Ray Kellogg

Phyllis Love

Crahan Denton

Wade Norton

Geoffrey Horne

Ann Barton / Yvette Leighton

Geraldine Brooks

Russell Johnson

Steve Crandon

Fred Beir

Jill Haworth

Janet De Gore

Roy Benjamin

Macdonald Carey

Carol Selby Conner

Nancy Rennick

Gen. Maximillian R. Hart

Robert F. Simon

Noelle Anderson

Shirley Knight

Carla Duveen

Grace Lee Whitney

Marsha Hunt

Reese Fowler

Warren Oates

Dr. Jonas Temple

Barry Atwater

Laural Marshall

Signe Hasso

Kasha Paine

Vera Miles

Professor Hebbel / Bifrost Alien / Emmett Balfour

John Hoyt

Ingrid Larkin

Sally Kellerman

Barbara Scott

Joanne Gilbert

Li-Chin Sung

Richard Loo

Invisibles Recruiter

Walter Burke

Ralph

David Garner

Harvey Kry Jr. / Capt. Terrence Ralph Brookman

David Frankham

Frank Brant

Robert Kelljan

Agnes Benjamin

Marion Ross

John McLiam

Keenan

Frank Maxwell

Justice of the Peace

Russell Collins

Ron Foster

Dr. Philip Mendl

Curt Conway

Arthur Batanides

Booth Coleman

Carol Maxwell

Jacqueline Scott

Colonel William Campbell

Joe De Santis

Collins

Joseph Ruskin

Joyce Van Patten

Constance Cavendish

Dr. Block / Aabel

Kent Smith

Bennye Gatteys

Bill Hart

Capt. Joseph Reardon

Karl Held

The Creature

William O'Connell

Jerry Douglas

Leonora Edmond

Barbara Rush

Col. Grover

Alan Baxter

Mrs. Palmer

Gladys Cooper

Julie Griffith

Betsy Jones-Moreland

Ben Garth

Bruce Dern

Phillip 'Griff' Griffith

Richard Derr

John Milford

Randall Latimer

Vaughn Taylor

Dr. Sigmund Hindeman

John Marley

Don Ross

Genero Planetta

Tony Mordente

Ebonite Interrogator

John Anderson

Frank Puglia

Robert Doyle

Angela Clarke

Griffin

Rudy Solari

Sawyer

Gene Raymond

Lt. Ernie Travers

Hari Rhodes

Justice's Wife

Nellie Burt

Arlene Schnabel

Linda Hutchins

Lex Johnson

Clyde Wyatt

Sammy Reese

Caretaker

Ken Renard

Mrs. McCluskey

Maxine Stuart

Adam Ballard / Louis Mace

Robert Duvall

Detective Sgt. Thomas Siroleo

Ed Asner

Wen Li

James Hong

James Frawley

Hunter

William Bush

Colus

Cedric Hardwicke

Merschel

Martin Wolfson

Li Kwan

James Yagi

Lt. James P. Willowmore

Bill Gunn

Prof. Stephanie Linden

Joan Camden

Gen. Hilary J. Clarke

Neil Hamilton

Vivia Balfour Hayden

Melinda Plowman

Dr. Soldini

Shirley O'Hara

Dr. Clifford Scott

Harry Townes

Bill Catching

Burt Douglas

Wolfe Barzell

Edgar Price

Alfred Ryder

Theodore Marcuse

Nora Marlowe

Gene Tyburn

Maj. Roger Hill

Claude Woolman

Gen. Benton / Philip Exeter Dundee / Elder of Luminos

Ben Wright

Chief of Staff / Coulter / First Reporter

Willard Sage

Dr. Paul Pollard / Budge / Bert Hamil

Robert Fortier

Dean Radcliffe

Edward C. Platt

Fred Severn / Coroner Leland / Bill Turner

Jason Wingreen

Dabbs Greer

Glenn Cannon

Fred - Second Hunter

Clay Tanner

Dr. Henschell

Paul Lambert

Dr. Philip Fletcher

Konstantin Shayne

Peterson

John Newton

Arndis Pollard

Allyson Ames

Dr. Williams / James Custer

Dabney Coleman

Madeleine Holmes

Allan Pinson

Janos Prohaska

Dwight Hartley

Barry Jones

Joe Hayden

Bert Freed

Frank Summers

Bert Remsen

Randolph E. Branch / New Sentry

Ted de Corsia

Commanding General

Whit Bissell

Dr. Mordecai Spazman

Anthony Jochim

GIA Agent Johnny

Chris Warfield

Warren Edgar Morley

Gene Darfler

Francis DeSales

Nurse

Jane Langley

Gabrielle Rossillon

Dr. Terrell

John Duke

Roy Sickner

Joey Tata

Dr. Tremaine

James McCallion

Dr. Whorf

Bernard Kates

Hugh Langtry

Robert Osterloh

Don Harvey

Official

Paul Lukather

Mavis Neal

Bob Johnson

Policeman / Navigator Dexter

William Stevens