Joseph Cotten

Holly Martins

Alida Valli

Anna Schmidt

Trevor Howard

Major Calloway

Orson Welles

Harry Lime

Paul Hörbiger

Karl the Porter

Ernst Deutsch

'Baron' Kurtz

Erich Ponto

Dr. Winkel

Siegfried Breuer

Popescu

Hedwig Bleibtreu

Anna's Landlady

Bernard Lee

Sergeant Paine

Wilfrid Hyde-White

Crabbin

Eric Pohlmann

Waiter at Smolka's (uncredited)

Carol Reed

UK Version's Opening Narrator (uncredited)

Annie Rosar

The Porter's Wife (uncredited)

Karl Stepanek

Actor at Josefstadt Theater (uncredited)

Theodore Gottlieb

Man on Street (uncredited)

Geoffrey Keen

British Military Policeman (uncredited)

Robert Brown

Britush Military Policeman in Sewer Chase (uncredited)