Vic Perrin

Control Voice (voice) (uncredited)

Patrick O'Neal

Jonathan Meridith

Eddie Albert

Andy Thorne

Dewey Martin

Jim Darcy

Ron Randell

Henderson James

Ron Hayes

Pilot Coberly

Howard Da Silva

Thurman Cutler (as Howard da Silva)

William Shatner

Gen. Jeff Barton

June Havoc

Karen Thorne

Mary Murphy

Linda Darcy

Lloyd Nolan

Tom Kagan

Peter Lind Hayes

Dr. James Stone

Michael Constantine

Joe Dix

Kay E. Kuter

Limbo Being

Peggy Ann Garner

Amanda Frank

Robert Webber

Ikar

William Boyett

Co-Pilot Beeman

Adam West

Major Merritt

Ford Rainey

D.A. Thomas Coyle

William Stevens

Navigator Dexter

Arthur Hunnicutt

Lamont

Skip Homeier

Dr. Roy Clinton

Grant Williams

Major Douglas McKinnon

Richard Tretter

Radio Engineer

Emma Tyson

Jane Darcy

William Bramley

"Baldy" Baldwin

Dorothy Green

Matron

Coby Denton

Sentry

Janos Prohaska

The Mikie

Michael Ansara

Qarlo Clobregnny

Tim O'Connor

Paul Tanner / Voice in The Enemy's war helmet (voice)

Ralph Hart

Loren Kagan

Jill Hill

Toni Kagan

Geraldine Brooks

Ann Barton

Allen Jaffe

The Enemy

Lloyd Gough

Gen. Claiborne

Marlowe Jensen

Sgt. Berry

Malachi Throne

Dr. Mike

Catherine McLeod

Abby Kagan

Dean Harens

Medical Technician

James B. Sikking

Botany

Lawrence Montaigne

Construction

Henry Scott

Electronics

Julian Burton

Reporter #1

Joan Freeman

Elizabeth Dunn

Peter Madsen

Reporter #2

Parley Baer

Dr. Bernard Stone

Douglas Henderson

Detective Lt. Runyan

Sam Reese

George Wilkerson (as Sammy Reese)

Marcelle Hebert

Miss Willett (as Marcel Hebert)

Keith Andes

Dr. Peter Wayne

Paul Sorensen

Grayson

James Doohan

Police Lt. Branch

Richard Gittings

TV Newscaster

Vaughn Taylor

Dean Flint

Jack Wilson

Sergeant Jackson

Aki Aleong

Akada

Mary Gregory

Apartment Manager

Barbara Wilkin

Susan Wayne

Robert Doyle

Marc Lake

Shirley O'Hara

Receptionist

Peter Duryea

Morrow

Jason Wingreen

Coroner Leland

Robert Culp

Trent

Michael Falcon

Elevator Operator

Arlene Martel

Consuelo Biros

Owen McGiveney

Night Watchman (as Owen McGivney)

Abraham Sofaer

Arch

Rudy Solari

Captain Buckley

Troy Melton

Det. Sgt. Alger

Rex Holman

Battle

Joe Maross

General Winston

Steve Harris

Breech

Ted Knight

Mr. Jerome

Robert Fortier

Budge

Chris Alcaide

Colonel Danvers

Anthony Costello

Lieutenant Bowman

Robert DoQui

Lieutenant Johnson

Peter Marko

Captain Lazzari

Michael T. Mikler

Captain Thomas

Sara Shane

Ethel Meridith

Marianna Hill

Nina

Peter Haskell

Peter Jellicoe

Leonard Nimoy

Judson Ellis

Ben Wright

Philip Exeter Dundee

John Hoyt

Professor Hebbel

Dabney Coleman

James Custer

Robert Sorrells

Fred

Hugh Sanders

Sheriff Barclay

Mary Jackson

Mrs. McCrae

Peter Brocco

Professor 'Doc' Link

Ken Drake

The Judge

Christine Matchett

Evie

James Shigeta

AIO Captain Newa

Dabbs Greer

E. F. Larkin

Robert Nelson

The Surgeon

Robert Cinder

Jessup

William Wintersole

Prof. Andrew Whitsett

Robert Duvall

Adam Ballard

Donald Harron

Art Harris

Steve Ihnat

Lt. Minns

Ivan Dixon

Sgt. James Conover

Dee Pollock

Francis Hadley, P.F.C.

James Frawley

Robert Renaldo

Ted de Corsia

Randolph E. Branch

Simon Prescott

The Guard

Jan Shutan

Mrs. Subiron

Linda Hutchings

The Nurse

Joanne Stewart

Miss Steen

Leon Askin

Shop Superintendent

Paulle Clark

Second Nurse

David Brady

Danny Masters

Warren Stevens

Eric Plummer

Kim Hector

Johnny Subiron

Gail Kobe

Janet

Curt Conway

Franklin Karlin

Constance Towers

Laura James

Edward Platt

David Hunt (as Edward C. Platt)

Mike Lane

The Megasoid

Steven Geray

Jerichau

Konstantin Shayne

The Gardener

Alan Gifford

The Guide

Jeffrey Stone

The Cop

Jonathan Hole

The Pedestrian

Ivy Bethune

Miss Thorsen

Charles H. Radilak

Michael Lint

Sean McClory

Karl Emmet

Larry Ward

Keith Ellis

Elizabeth Perry

Jennifer Barham

Stephen Joyce

Captain Branson

Anthony Eisley

Col. Alex Barham

Crahan Denton

Dr. Matthew James

Douglas Kennedy

Gen. Daniel Pettit

Shary Marshall

Maggie O'Hara

Paul Lukather

Nichols

Sandy Kenyon

Henry Craif

Martin Kosleck

Dr. Leo Hausner

Wesley Addy

Dr. Rahm

Peter Hansen

Major Locke

Robert Chadwick

Guard

Peter Mark Richman

Jefferson Rome

Read Morgan

Adam Lunk

John Caper Jr.

Adam Link (voice)

Morgan Brittany

Minerva Gordon

Jacqueline Scott

Dr. Alicia Hendrix