- Robert Pattinson Georges Duroy
- Uma Thurman Madeleine Forestier
- Kristin Scott Thomas Virginie Rousset
- Christina Ricci Clotilde de Marelle
- Colm Meaney Sr. Rousset
- Philip Glenister Charles Forestier
- Holliday Grainger Suzanne Rousset
- Natalia Tena Rachel la Prostituta
- James Lance François Laroche
- Anthony Higgins Conde de Vaudrec
- Pip Torrens Paul el Mayordomo
- Christopher Fulford Inspector de Policía
