Cast
- Louis Jourdan
- Le comte Mathias Sandorf
- Renaud Mary
- Sarcany
- Francisco Rabal
- Frédéric de Rotenbourg
- Serena Vergano
- Elisabeth Sandorf
- Antoine Balpêtré
- Professor Ernst Bathory
- Valeria Fabrizi
- Helene
- Antonio Casas
- Zathmar
- Marcel Pérès
- (as Marcel Perez)
- Xan das Bolas
- Carpena
- Carlos Mendy
- Ferrato
- Daniel Cauchy
- Pescade
- Carl Studer
- Matifou
- Claudio Gora
- Procureur
- Bernard Blier
- Toronthal
- Henri Crémieux
- Le président
- Paul Mercey
- (uncredited)
Camera and Electrical Department
- Raymond Boudeau
- chief electrician
- Enrique de la Jara
- chief electrician (as Enrique La Jara)
- Daniel Diot
- camera operator
- Bernard Grasberg
- assistant camera
- Bernard Noisette
- assistant camera
- Louis Stein
- camera operator