Romy Schneider

Katia

Curd Jürgens

Czar Alexander II

Pierre Blanchar

Koubaroff

Antoine Balpêtré

Kilbatchich

Françoise Brion

Sophie

Monique Mélinand

Tsarina Maria

Michel Bouquet

Bibesco

Bernard Dhéran

Stéphane Ryssakov

Margo Lion

Institut Supervisor

Jacqueline Marbaux

Mlle Trépeau

Yves Barsacq

Katourine

Alain Saury

Soloviev

Senta Berger

Court Lady

Hans Unterkircher

Paskievitch

Hubert Noël

Michel Dolgorouki

Gabrielle Dorziat

Germaine Delbat

(uncredited)

Françoise Deldick

(uncredited)

Robert Le Béal

(uncredited)

Jacques Mancier

(uncredited)

Paul Mercey

(uncredited)

Pierre Moncorbier

(uncredited)

László Szabó

(uncredited)

Monique Tarbès

(uncredited)

Irène Tunc

(uncredited)

Egon von Jordan

(uncredited)