Heath Ledger as Casanova

Sienna Miller as Francesca

Jeremy Irons as Pucci

Oliver Platt as Paprizzio

Lena Olin as Andrea

Omid Djalili as Lupo

Stephen Greif as Donato

Ken Stott as Dalfonso

Helen McCrory as Casanova's Mother

Leigh Lawson as Tito

Tim McInnerny as The Doge

Charlie Cox as Giovanni Bruni

Natalie Dormer as Victoria

Phil Davis as Guardi

Paddy Ward as Vittorio

Ben Moor as Andolini

Adelmo Togliani as Fulvio

Lidia Biondi as Casanova's Grandmother

Eugene Simon as Casanova at 11

Robert Levine as Cardinal Lopresta

Lauren Cohan as Sister Beatrice

Danielle Baker as Sister Magdalene

Clive Riche as Prof. Bennetto

Marta Bellocchio as Beautiful Masked Woman

Adriano Iurissevich as Masked Casanova Actor

Giorgio Bertan as Actor

Niall Buggy as Bookseller / Printer

Simonetta Bortolozzi as Beautiful Woman in Bookshop

Francis Pardeilhan as Customs Officer

Enzo Turrin as Maggiordomo

Carolina Levi as Bruni's Maid

Paola Pessot as Lolling Street Walker

Elisabeth Riva as Prostitute

Nicholas Raymond Capriati as Boy

Naike Rivelli as Dark Haired Beauty

Sara Guerra as Fair Haired Woman

Marta Paola Richeldi as Another Woman

Giorgia Riccardi as Another Beauty

Kristy DiBiccari as Woman in Bookshop

Jessica Seaton as Plain Woman in Bookshop

Annagaia Marchioro as Plain Looking Woman

Lorenzo Felisatti as Laughing Man

Roy Doliner as Dalfonso's Secretary

Silvia Nanni as Whispering Woman

Paolo De Giorgio as Young Man

Alessandro Bressanello as Flunkey Captain

Katarina Volgyiova as Society Woman

Davide Bozzato as Drunken Reveller

Catherine Gault as Reveller

Renzo Martini as Beadle

Laura Pigozzo as Woman

Federico Scridel as Casanova Actor

Manuela Massimi as Lady Actress

Tommy Körberg as Gondola Singer

Bryan Korenberg as Man in Brothel

Bimba as Pig

Stefano Imperi as Dancer (uncredited)

Andrea Osvárt as Fair Haired Beauty (uncredited)

Monica Vallerini as Whore #3