Roman Polanski Director, Writer, Concertgoer (uncredited)
Denis Podalydès Maître Demange
Grégory Gadebois Henry
Louis Garrel Alfred Dreyfus
Michel Vuillermoz Du Paty de Clam
André Marcon Émile Zola
Hervé Pierre General Gonse
Jean Dujardin Picquart
Mathieu Amalric Bertillon
Laurent Stocker General de Pellieux
Hervé de Luze Editor
Emmanuelle Seigner Pauline Monnier
Wladimir Yordanoff General Mercier
Vincent Perez Maître Leblois
Christophe Maratier Warrant Officer
Bruno Raffaelli Judge Delegorgue
Ludovic Paris Senator Ranc
Patrick Perrin Musician
Jean Rabasse Production Design
Stefan Godin General Darras
Damien Bonnard Desvernine
Michaël Laguens Casting
Melvil Poupaud Maître Labori
Alexandre Desplat Original Music Composer
Fred Epaud Artillery Officer
Vincent Grass General Billot
Robert Harris Screenplay, Book
Franck Mercadal Captain Calmont
Alain Goldman Producer
Thierry Gimenez Colonel Jouaust
Philippe Cord'homme Set Decoration
Luca Barbareschi Co-Producer, Philippe Monnier
Pierre Forest Colonel Maurel
Jeanne Rosa Martha Leblois
Pierre Aussedat Colonel at Picquart's Arrest
Nicolas Bosc Stunt Double
Nicolas de Lavergne Auguste Dutrieux (uncredited)
Nicolas Bridet Mathieu Dreyfus
Nicolas Wanczycki Foucault
Philippe Magnan Attorney Brisset
Paolo Del Brocco Co-Producer
Édith Le Merdy Concierge
Michel Carliez Stunt Coordinator
Cyril Holtz Sound Re-Recording Mixer
Vincent de Boüard Gribelin
Benoît Allemane Georges Charpentier
Didier Sandre General Boisdeffre
Niels Barletta Sound Re-Recording Mixer
Gérard Chaillou Georges Clémenceau
Eric Ruf Sandherr
Hubert Engammare First Assistant Director
Mohammed Lakhdar-Hamina Bachir
Pierre Hurel Man (uncredited)
Luce Mouchel Madame Sandherr
Michèle Clément Washerwoman (uncredited)
Dominique Moisan Art Direction
Kevin Garnichat Lauth
Brigitte Boucher Marie Bastian (uncredited)
Jean-Marie Frin Judge Delegorgue
Charles Tesnière Officer (uncredited)
Lionel Mur Journalist
Paweł Edelman Director of Photography
Laurent Natrella Esterhazy
Roman Abramovich Executive Producer
Sylvette Baudrot Script Supervisor
Vesna Peborde Key Makeup Artist
Pierre Poirot Vallecalle Clerk
Antoine Zerbini Soldier (uncredited)
Aymeric Devoldère Supervising Sound Editor
Lucien Balibar Sound
Yannik Landrein Gast
Mathieu Cayrou Private Dugommier (uncredited)