* Michael Pitt as Hervé Joncour
* Keira Knightley as Hélène Joncour
* Ko Shibasaki as the Japanese woman
* Alfre Woodard as Madame Blanche
* Matt Smith as the young man
* Tom Wilkinson as Baron de Mûrat
* Seung-hun Lee as the Japanese Lieutenant
While there are other actors and actresses in the film, these are the primary roles.