Billion Dollar Brain

Michael Caine

Harry Palmer

Karl Malden

Leo Newbigen

Ed Begley

General Midwinter

Oskar Homolka

General Stok

Françoise Dorléac

Anya

Guy Doleman

Colonel Ross

Vladek Sheybal

Dr. Eiwort

Milo Sperber

Basil

Janos Kurutz

Latvian Gangster

Alexei Jawdokimov

Latvian Gangster

Paul Tamarin

Latvian Gangster

Izabella Telezynska

Latvian Gangster

Mark Elwes

Birkenshaw

Stanley Caine

GPO Special Delivery Boy

Susan George

Russian Girl on Train

Miki Iveria

Russian Woman on Train

Jill Mai Meredith

Russian Girl on Train

John Brandon

Jim

Tony Harwood

Macey

Michael Stayner

Scientist

Donald Sutherland

Scientist at Computer

George Roubicek

Edgar

Brandon Brady

Chief of Security

Fred Griffiths

Taxi Driver

Gregg Palmer

1st Dutch Businessman

John Herrington

2nd Dutch Businessman

Hans De Vries

3rd Dutch Businessman

Alex Marchevsky

Russian Radar Operator

Peter Forest

2nd Russian Radar Operator

Reed De Rouen

Observer

Frederick Schrecker

Old Man on Train

Dolly Brennan

Old Woman in Gangster's Hut

Bill Mitchell

Guard at Midwinter's House

Max Kirby

Shoe Shop Assistant

Steve Emerson

Russian Plainclothesman

Mark Moss

Russian Plainclothesman

Gertan Klauber

Dr. Kaarna (uncredited)

Harry Fielder

Cowboy at Barndance (uncredited)