George Coulouris

as Walter Parks Thatcher

as Dr. Chatal

as Doctor

as Arbitan

as Camel Driver

as Man with the Stick

as André Massart

as Ragheeb

as Professor Berrigan

as Dr. Londe

as Father Mittner

as Swiss Peasant

as Sir Robert de Baudricourt, Governor of Vaucouleurs

as Dr. Byles

as Prosecutor

as Charpentier

as El Keb

as John Gurney

as Teck de Brancovis

as Mr. Saunders, Circus Club Manager

as Jim Mordinoy

as Supt. John R. Buckley

as Charles Vernay

as Doctor Roth

as Mr. Sturdevant

as Mr. Lingley

as Old Man Vespucci

as Babalatchi

as Louis Pleyel

as Dr Powys

as Briggs

as Padre

as Captain Currie

as Defense Attorney

as Chippie

as Doc Ganson

as Pascoe

as Dr. James Moran

as Capt. Pharaoh Coffin

as Carl Kraski

as Andrew Garvin

as Chief of Police Spadoni

as Max Greene

as Joachim Helm

as Professor Godowski

as Ernest Schroeder

as 'Pic' Dallapiccola

as Paul Bourdin

as Arbitan

as Portuguese Captain

as Italian POW camp commandant

as Lacoste

as DeBono

as Heinz Webber

as Cardenas

as Captain Weiss

as Karl Brussard

as 'Bennie' Bensuson

as François Lejeune

as Harwood

as Shepherd

as Prime Minister Krivoc

as Victor Sloma

as Maj. Jack Drumman aka The Grey Spider

as Capt. Malburn

as Colonel Sandherr

as James Randolph

as The Colonel

as Dr. Panzer

as Foreign Legion Captain

as Capt. Hans Holz

as Von Beck

as Daventry's Butler (uncredited)

as Alan A Dale

as Bank Manager

as Gomez

as Pokorny

as Lew Proctor

as Carlo

as Andrew

as Forbes

as Harcourt Brown

as (English version narrator)

as Col. Benedict

as The Imposter / Harcourt Brown

as Poppa Brodsky

as Controller

as Gideon Bloodgood

as Hans Daedalus

as Tallent

as Hans Daedalus

as Doctor

as Arbitan (archive footage)

as Mr. Grimthorpe

as Nikolai