Constantine

Michael Wilding

Milos Petrovitch

John Clements

Dr. Stephan Petrovitch

Stephen Murray

General von Staengel

Godfrey Tearle

Kossan Petrovitch

Tom Walls

Maria Petrovitch

Rachel Thomas

Anna Petrovitch

Mary Morris

Col. von Brock

Robert Harris

Petar

Stanley Baker

Dr. Jordan

Niall MacGinnis

Sergeant

Charles Victor

Danilo

Tecwyn Jones

Lieut. Banse

Eynon Evans

Dragutin

Ben Williams

Station Master

Ivor Barnard

A Yugoslav General

George Merritt

Danilo

Terwyn Jones

Lt. Franke

Norman Pierce

Lieut. Von Klotz

Eric Micklewood

Priest (uncredited)

Finlay Currie

Minor Role (uncredited)

John Slater

Minor Role (uncredited)

Brynmore Thomas

Schoolteacher (uncredited)

Herbert Lomas

Constantine

Michael Wilding, Sr.

Yugoslav Soldier (uncredited)

John Wynn