On screen
Cast
18 credited performers
Stewart Granger
Rudolf Rassendyll / King Rudolf V
Deborah Kerr
Princess Flavia
James Mason
Rupert of Hentzau
Louis Calhern
Col. Zapt
Jane Greer
Antoinette de Mauban
Lewis Stone
The Cardinal
Robert Douglas
Michael, Duke of Strelsau
Robert Coote
Fritz von Tarlenheim
Peter Brocco
Johann
Francis Pierlot
Josef
Jay Adler
Character not listed
Kathleen Freeman
Character not listed
John Goldsworthy
Character not listed
Thomas Browne Henry
Character not listed
Doris Lloyd
Character not listed
Stanley Logan
Character not listed
Artwork unavailable
Stephen Roberts
Character not listed
Artwork unavailable
Bud Wolfe
Character not listed