Anthony Quinn
Kiril Lakota
Acting
Laurence Olivier
Piotr Ilyich Kamenev
Acting
Oskar Werner
Fr. David Telemond
Acting
David Janssen
George Faber
Acting
Vittorio De Sica
Cardinal Rinaldi
Directing
Leo McKern
Cardinal Leone
Acting
John Gielgud
The Elder pope
Acting
Barbara Jefford
Dr. Ruth Faber
Acting
Rosemary Dexter
Chiara
Acting
Frank Finlay
Igor Bounin
Acting
Burt Kwouk
Chairman Peng
Acting
Arnoldo Foà
Gelasio (as Arnoldo Foa')
Acting
Paul Rogers
Augustinian
Acting
George Pravda
Gorshenin (credit only)
Acting
Clive Revill
Tovarich Vucovich
Acting
Niall MacGinnis
Capuchin Monk
Acting
Marne Maitland
Cardinal Rahamani
Acting
Isa Miranda
The Marchesa
Acting
Gerald Harper
Brian
Acting
Leopoldo Trieste
Dying Man's Friend
Acting
Peter Copley
English Cardinal
Acting
Arthur Howard
English Cardinal
Acting
Jean Rougeul
Dominican
Acting
Arnaldo Caivano
Dying Man (uncredited)
Acting
Inna Alexeievna
Party Guest (uncredited)
Acting
Silvana Bacci
Party Guest (uncredited)
Acting
John Frederick
American Cardinal (uncredited)
Acting
Åke Lindman
Soldier Releasing Lakota (uncredited)
Acting
Lex Monson
Third African Priest (uncredited)
Acting
Dom Moor
Polish Cardinal (uncredited)
Acting
Antonio Proietti
Cardinal (uncredited)
Acting
Alfred Thomas
African Cardinal (uncredited)
Acting