Bob Hoskins

as Angelo Roncalli / Giovanni XXIII

Carlo Cecchi

as Cardinale Mattia Carcano

Roberto Citran

as Monsignor Loris Capovilla

Fabrizio Vidale

as Angelo Roncalli (giovane)

Sergio Bini Bustric

as Guido Gusso

Francesco Venditti

as Nicola Catania (giovane)

Rolando Ravello

as Cannava

John Light

as Mattia Carcano (giovane)

Francesco Carnelutti

as Nicola Catania

Lena Lessing

as Marta Von Papen