Robert Pattinson as Georges Duroy

Uma Thurman as Madeleine Forestier

Christina Ricci as Clotilde de Marelle

Kristin Scott Thomas as Virginie Walters

Colm Meaney as Monsieur Rousset

Philip Glenister as Charles Forestier

Holliday Grainger as Suzanne Rousset

Natalia Tena as Rachel the Prostitute

Anthony Higgins as Comte de Vaudrec

James Lance as François Laroche

Thomas Arnold as Louis

Timothy Walker as Solicitor

Pip Torrens as Paul the Butler

Christopher Fulford as Police Commisioner

Amy Marston as Nanny

Eloise Webb as Laurine de Marelle

Frank Dunne as Bishop

Christos Lawton as Journalist (uncredited)