 | Nicole Kidman als Grace Kelly |
 | Milo Ventimiglia als Rupert Allan |
 | Paz Vega als Maria Callas |
 | Tim Roth als Prince Rainier III |
 | Parker Posey als Madge Tivey-Faucon |
 | Frank Langella als Father Francis Tucker |
 | Derek Jacobi als Count Fernando D'Aillieres |
 | Geraldine Somerville als Princess Antoinette |
 | Roger Ashton-Griffiths als Alfred Hitchcock |
 | Nicholas Farrell als Jean-Charles Rey |
 | Robert Lindsay als Aristotle Onassis |
 | Olivier Rabourdin als Emile Pelletier |
 | Pascaline Crêvecoeur als Grace Kelly's dresser |
 | Jeanne Balibar als Countess Baciocchi |
 | André Penvern als Charles de Gaulle |
 | Flora Nicholson als Phyllis Blum |
 | Yves Jacques als M. Delavenne |
 | Jérémie Covillault als Mr. Sécurité Palais |
 | Philip Delancy als Robert McNamara |
 | Jean Dell als Denard |
 | Guillaume Briat als Homme émission TV |
| Nicholas Hawtrey als Ministre |
 | Alban Casterman als Producteur Hollywood |
 | Laurent Jumeaucourt als Lieutenant français CRS |
 | Ariane Séguillon als Femme du marché |
 | Alexandre Pottier als Rainier Minister |
 | Satya Dusaugey als Detective Madge |
| Arash Amel | Producer |
| Olivier Dahan | Director |
| Arash Amel | Screenplay |
| Pierre-Ange Le Pogam | Producer |
| Christopher Gunning | Music |
| Olivier Gajan | Editor |
| Fanny De Donceel | Casting |
| Mathilde Snodgrass | Casting |
| Dan Weil | Production Design |
| Delphine Mabed | Art Direction |
| Gigi Lepage | Costume Design |
| François Borgeaud | Property Master |
| Tatiana Bouchain | Art Department Coordinator |
| Niels Terwingen | Construction Coordinator |
| Jean-Baptiste Faure | Boom Operator |
| Philippe Penot | Foley |
| Pascal Villard | Supervising Sound Editor |
| Jean-Paul Hurier | Sound Re-Recording Mixer |
| Florent Lavallée | Sound Re-Recording Mixer |
| Johann Nallet | Sound Re-Recording Mixer |
| Alain Carsoux | Visual Effects Supervisor |
| Guillaume Le Gouez | Visual Effects Supervisor |
| Eric Baraillon | Gaffer |
| Toby Spigel | Casting |
| Claire Chanat | Costume Supervisor |
| Katia Boutin | Music Editor |
| Corinne Devaux | Choreographer |
| David Koskas | Still Photographer |
| Éric Gautier | Director of Photography |
| Agathe Dupuis | Hairstylist |
| Kerry Warn | Hairstylist |
| Silvine Picard | Hairstylist |
| Ivana Primorac | Makeup Artist |
| Frédérique Ney | Makeup Artist |
| Catherine Ichou | Makeup Artist |
| Marion Chevance | Makeup Artist |
| Chengcheng Chi | Assistant Art Director |
| Boëdec Cramesnil Maëla | Assistant Art Director |
| Marc Ehrenbold | Helicopter Camera |
| Sébastien Buchmann | Additional Camera |
| Daran Fulham | Supervising Art Director |
| Caroline Reynaud | Dialogue Editor |
| Charles Autrand | Dialogue Editor |
| Mélanie Blouin | Dialogue Editor |
| Gilles Waterkeyn | Executive Producer |
| Adrian Politowski | Executive Producer |
| Nadia Khamlichi | Executive Producer |
| Claudia Bluemhuber | Executive Producer |
| Jeremy Burdek | Executive Producer |
| Uday Chopra | Producer |
| Florian Dargel | Executive Producer |
| Uta Fredebeil | Executive Producer |
| Irene Gall | Executive Producer |
| Bill Johnson | Executive Producer |
| Stefano Massenzi | Producer |
| Andrea Occhipinti | Producer |
| Jonathan Reiman | Executive Producer |
| Jim Seibel | Executive Producer |
| Bruno Wu | Executive Producer |
