Tom Conti

as Pope Leo XIV

Fernando Rey

as Cardinal Stefano Biondi

Erland Josephson

as Monsignor Francesco Ghezzi

Giancarlo Giannini

as Abalardi

Donald Hewlett

as Monsignor Colin McGee

Edward James Olmos

as Ciolino

Patricia Mauceri

as Lucia

Angelo Evans

as Giuliano

Marta Zoffoli

as Isabella

Guido Alberti

as Cardinal Augusto Morante

Massimo Sarchielli

as Fortunato

Massimo Serato

as Monsignor Betti

Agnès Nobecourt

as Mother of Sick Boy

Jorge Krimer

as Secretary, Sistine Chapel

Tom Felleghy

as Ambassador

Ettore Martini

as Bishop

Joe Chevalier

Phillip Dacchille

Robert Sommer

Catullo Scuderoni

Fabio Caretti

Paolo Merosi

Teresa Rossi Passante

Claudio Masin

Carlo Monni

Peter Boom

Julian Jenkins

Margherita Horowitz