Romy Schneider

as Fanny Emmetsrieder

Jean-Claude Pascal

as Tsar Alexander the First

Paul Guers

as French Ambassador D'Aurignac

Jacqueline Marbaux

as Princess Metternich

Helmuth Lohner

as Count Waldau

Charles Regnier

as Prince Metternich

Hans Moser

as Grandpa Emmetsrieder

Simone Paris

Véra Valmont

as Empress Marie Louise

Josef Meinrad

as Baron Hager

Helmut Qualtinger

as Detective Zawadil

Rolf Wanka

as Count Waldau Sr.

Marcel Marceau

as Mime

Margarethe Hruby

as Lady Stewart (uncredited)

Willy Maertens

as Count Schleizenstein (uncredited)

Franz Schafheitlin

as English Ambassador Lord Stewart (uncredited)

Hans Schwarz Jr.

as Prince Razumofsky (uncredited)

Lou Seitz

as Countess Haschlowitz (uncredited)

Erik von Loewis

as General Seidelbast (uncredited)