Angelina Jolie as Maria Callas

Pierfrancesco Favino as Ferruccio

Alba Rohrwacher as Bruna

Haluk Bilginer as Aristotle Onassis

Kodi Smit-McPhee as Mandrax

Stephen Ashfield as Jeffrey Tate

Valeria Golino as Yakinthi Callas

Caspar Phillipson as John. F Kennedy

Lydia Koniordou as Lista Callas

Vincent Macaigne as Doctor Fointainebleau

Aggelina Papadopoulou as Young Callas (1940)

Erofili Panagiotarea as Young Yakinthi (1940)

Jörg Westphal as SS Officer

Philipp Droste as SS Officer

Alessandro Bressanello as Giovanni Battista Meneghini

Paul Spera as Ronald

Kay Madsen as Cameraman

Lyes Salem as Waiter

Christophe Favre as Maître d'Hôtel

Hugo Dillon as Pierre

Lidia Zelikmann Kauders as Young Callas (1930)

Toma Hrisztov as Opera Lover

Botond Bartus as Dorchester Man

Rebecka Johnston as Party Guest

Lili Walters as Florist

Jeremy Wheeler as Dorchester Tuxedo Man

János Geréb as Neighbour

Andrew Hefler as Café Guest

Bálint Magyar as Prince Rainier of Monaco

Patrick McCullough as Waiter

Francis McBurney as Hospital Security Guard

Christiana Aloneftis as Young Callas (1947)

Miklós Béres as Neighbour

Lorena Santana-Somogyi as Spectator

Tímea Kása as Spectator

Kembe Sorel as Spectator

András Sütö as Balcony Neighbour

Suzie Kennedy as Marilyn Monroe

Viktor Mitev as Bartender (uncredited)

Maria Callas as Self (archive footage) (uncredited)

Aristotle Onassis as Self (archive footage) (uncredited)