Walter Pidgeon

as Dr. Edward Morbius

as Narrator (voice) (uncredited)

as Mr. Gruffydd

as Florenz Ziegfeld

as Harry Pebbel

as Clem Miniver

as Admiral Harriman Nelson

as Sherman Hatfield

as Captain Alan Thorndike

as Senate Majority Leader

as The Pickpocket

as Colonello Henderson

as (archive footage) (uncredited)

as Frederick Y. Alderson

as James Ellswirth

as William 'Will' Cantrell

as Dr. Samuel Andrews

as Sen. Arne Lindner

as Pierre Curie

as General Augustus Perry

as King

as Self (archive footage)

as (archive footage)

as Sam Gladney

as Casey

as Lord Dunsmore

as Richard Morey

as Ernest Hemingway (uncredited)

as Walter McBride

as Col. Edward W. Hall, Sr.

as Self

as Narrator (voice)

as Frederick Kellerman

as Orville Ames

as Leo Roland

as Major General Roland Goodlow Kane

as Sterling North (voice)

as James Haggin

as Hartley Madison

as Self

as Bill Dennis

as Sam Bailey

as Self - Presenter

as The Chairman

as J.J. Shubert

as Major Augustus Parkington

as Amos Larkin

as Lucy's Lover

as Dr. Charles Priest

as Charlie Parkins

as Grayson's Butler

as Xavier Smith

as Nick Carter

as Tim Nolan

as James Rayburn

as Haven D. Allridge

as le jeune Jolyon Forsyte

as Dwight Bradley Masen

as Richard Thurlow

as Clem Miniver

as Chip Collyer

as Florestan

as Nicholas 'Nick' Carter, aka Robert Chalmers

as William Sylvester Packett

as Cmdr. Dowling

as Squadron Commander Billy Gary

as B.G. Perkins

as Self

as Col. Michael S. 'Hooky' Nicobar

as Christopher Durant

as Chris Matthews

as Al Howard

as Alan Wythe

as Judge Trenchard

as Premiere Emcee

as Jess Clark

as Jeff Sherman

as John Arlen

as Nick Carter

as Mr. Harry Witzel

as Walter Pidgeon

as Col. Brunswick

as Tyler Flagg

as Self

as John Baker

as Steve Donegan

as Herbert Cummings

as actor 'Advise and 'Consent' (archive footage) (uncredited)

as John Pahlman

as Jeffrey Evans

as Mark Sabre

as Major Hugh "Bulldog" Drummond

as Ken Morley

as Patrick J. McChesney

as Self

as Keith Follett

as Sheriff Jack Rance

as Mayor Jack Parker

as Self

as Self

as 'Ace' Benton

as Clay

as Thomas Carmichael

as Lewis Gannet

as Clyde Lord Geradine

as Uncle Joe Padway

as Ned Thayer

as Tony Williams

as Self

as Jason Merrill

as Dr. Scott Logan

as Paul de St. Cyr

as Lord Varney

as Franz von Renner

as Colonel Vultow

as Alonzo Smith

as (archive footage)

as Fraser James

as David Roberts

as Stevens

as Arthur Marsden

as Mickey McGuire

as Martin Innesbrook

as Victor Trent

as Paul Stacey

as Bravo

as Jack Clark

as Philip Drake

as Basil Owen

as Paul Sinclair

as Monte Carroll

as Paul

as Richard Marsden

as Arthur Wyatt

as United States Consul

as Self

as Self - (archive footage)

as Dr. Max van Condon

as Captain Alan Thorndike (stills from Man Hunt)