Olivier Dahan Director Nicole Kidman Grace Kelly Actor Tim Roth Prince Rainier III Actor Frank Langella Father Francis Tucker Actor Paz Vega Maria Callas Actor Parker Posey Madge Tivey-Faucon Actor Derek Jacobi Count Fernando D'Aillieres Actor Milo Ventimiglia Rupert Allan Actor Robert Lindsay Aristotle Onassis Actor Geraldine Somerville Princess Antoinette Actor Nicholas Farrell Jean-Charles Rey Actor André Penvern Charles de Gaulle Actor Roger Ashton-Griffith Alfred Hitchcock Actor Yves Jacques M. Delavenne Actor Arash Amel Screenwriter, Producer Pierre-Ange Le Pogam Producer Uday Chopra Producer Claudia Blumhumer Executive Producer Jeremy Burdek Executive Producer Florian Dargel Executive Producer Uta Fredbeil Executive Producer Irene Gall Executive Producer Bill Johnson Executive Producer Nadia Khamlichi Executive Producer Jonathan Reiman Executive Producer Jim Seibel Executive Producer Bastien Sirodot Executive Producer Bruno Wu Executive Producer Eric Gautier Cinematographer Olivier Gajan Film Editing Christopher Gunning Original Music Dan Weil Production Design Gigi Lepage Costume Design Mathilde Snodgrass Casting