George Coulouris

Dr. Chatal

Walter Parks Thatcher

Camel Driver

Doctor

Professor Berrigan

"Chippie" the Carpenter

El Keb

André Massart

Swiss Peasant

Ragheeb

Sir Robert de Baudricourt, Governor of Vaucouleurs

Father Mittner

Dr. Londe

Capt. Pharaoh Coffin

Doctor Roth

Joachim Helm

Charpentier

Portuguese Captain

Briggs

Old Man Vespucci

Charles Vernay

Prosecutor

Maj. Jack Drumman aka The Grey Spider

John Gurney

Padre

Pascoe

Louis Pleyel

Capt. Malburn

Mr. Lingley

Captain Currie

Prime Minister Krivoc

Doc Ganson

Supt. John R. Buckley

Teck Brankovic

Dr. Byles

Chief of Police Spadoni

Mr. Saunders, Circus Club Manager

Colonel Sandherr

Tallent

Mr. Sturdevant

Doctor

Dr Powys

Cardenas

Captain Weiss

Karl Brussard

Max Greene

Carl Kraski

Forbes

Andrew

François Lejeune

Babalatchi

Jim Mordinoy

Dr. James Moran

'Bennie' Bensuson

Gideon Bloodgood

Lew Proctor

Alan A Dale

Arbitan (archive footage)

Italian POW camp commandant

Von Beck

Ernest Schroeder

Foreign Legion Captain

Arbitan

James Randolph

Controller

Professor Godowski

The Colonel

Capt. Hans Holz

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Defense Attorney

Bank Manager

Victor Sloma

Heinz Webber

Andrew Garvin

Carlo

Paul Bourdin

(English version narrator)

Dr. Panzer

'Pic' Dallapiccola

Lacoste

Daventry's Butler (uncredited)

Judge

Col. Benedict

Hans Daedalus

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John Gurney (archive footage)

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Arbitan

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Hans Daedalus

Shepherd

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Dr. Bennett

Man with the Stick

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Harwood

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Dr. Jackson

Harcourt Brown

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The Imposter / Harcourt Brown

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DeBono

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Mr. Grimthorpe