 | Robert Pattinson als Georges Duroy |
 | Uma Thurman als Madeleine Forestier |
 | Christina Ricci als Clotilde de Marelle |
 | Kristin Scott Thomas als Virginie Walters |
 | Colm Meaney als Monsieur Rousset |
 | Philip Glenister als Charles Forestier |
 | Holliday Grainger als Suzanne Rousset |
 | Natalia Tena als Rachel the Prostitute |
 | Anthony Higgins als Comte de Vaudrec |
 | James Lance als François Laroche |
 | Thomas Arnold als Louis |
 | Timothy Walker als Solicitor |
 | Pip Torrens als Paul the Butler |
 | Christopher Fulford als Police Commisioner |
 | Amy Marston als Nanny |
 | Eloise Webb als Laurine de Marelle |
 | Frank Dunne als Bishop |
 | Christos Lawton als Journalist (uncredited) |
| Nick Ormerod | Director |
| Declan Donnellan | Director |
| Guy de Maupassant | Novel |
| Rachel Bennette | Screenplay |
| Uberto Pasolini | Producer |
| Simon Fuller | Executive Producer |
| Laurie Borg | Co-Producer |
| Ceri Hughes | Associate Producer |
| Ildikó Kemény | Associate Producer |
| Susie Figgis | Casting |
| Lakshman Joseph De Saram | Original Music Composer |
| Rachel Portman | Original Music Composer |
| Stefano Falivene | Director of Photography |
| Attila Kovács | Production Design |
| Masahiro Hirakubo | Editor |
| Gavin Buckley | Editor |
| Odile Dicks-Mireaux | Costume Design |
| Jenny Shircore | Makeup Designer |
| Jenny Shircore | Hair Designer |
| Josh Robertson | First Assistant Director |
| Jennifer Wynne | Production Manager |
| Louise O'Malley | Production Accountant |
| Mark Raggett | Supervising Art Director |
| Simon Hayes | Production Sound Mixer |
| Robert Farr | Sound Re-Recording Mixer |
| Lee Sheward | Stunt Coordinator |
| Marc Cass | Stunt Coordinator |
| Neil Williams | First Assistant Editor |
| Jane Gibson | Choreographer |
| Hagen Bogdanski | Additional Photography |
| John Colley | Gaffer |
| Zoe Morgan | Script Supervisor |
| Valentina Coccia | Production Coordinator |
| Kirsty Kinnear | Casting Assistant |
| Nick Shuttleworth | Second Assistant Director |
| Tom Brewster | Third Assistant Director |
| Stuart Howell | Camera Operator |
| Stuart Howell | Steadicam Operator |
| Robert Patzelt | Camera Operator |
| Robert Patzelt | Steadicam Operator |
| Kerry Brown | Still Photographer |
| Arthur Fenn | Boom Operator |
| Natalie Humphries | Assistant Costume Designer |
| Jane Petrie | Costume Supervisor |
| Joe Hopker | Makeup Artist |
| Joe Hopker | Hairstylist |
| Lizzie Lawson | Makeup Artist |
| Lizzie Lawson | Hairstylist |
| Jon Henry Gordon | Makeup Artist |
| Jon Henry Gordon | Hairstylist |
| Vince Madden | Rigging Gaffer |
| Dan Whitty | Location Manager |
| Michael Harm | Location Manager |
| Dean Clegg | Art Direction |
| Alexandra Collins | Assistant Art Director |
| Anna Lynch-Robinson | Set Decoration |
| Sophie Neil | Art Department Assistant |
| Terry Woods | Property Master |
| Stuart Brisdon | Special Effects Supervisor |
| Jeff Atmajian | Orchestrator |
| Lakshman Joseph De Saram | Orchestrator |
| Rachel Portman | Orchestrator |
| Gisela Evert | Post Production Supervisor |
| Robert Farr | Supervising Sound Editor |
| Sam Southwick | ADR Editor |
| Sam Southwick | Dialogue Editor |
| Yann McCullough | Music Editor |
| Ian Wilson | Sound Effects Editor |
| Sean Farrow | Visual Effects Supervisor |
| Ginger Corbett | Unit Publicist |
| Phil Cairns | Unit Publicist |
| Lizzy Follows | Unit Publicist |
| Vanessa Baker | ADR Voice Casting |
