Anthony Quinn
Kiril Lakota
Laurence Olivier
Piotr Ilyich Kamenev
Oskar Werner
Fr. David Telemond
David Janssen
George Faber
Vittorio De Sica
Cardinal Rinaldi
John Gielgud
The Elder pope
Barbara Jefford
Dr. Ruth Faber
Arnoldo Foà
Gelasio (as Arnoldo Foa')
George Pravda
Gorshenin (credit only)
Clive Revill
Tovarich Vucovich
Niall MacGinnis
Capuchin Monk
Marne Maitland
Cardinal Rahamani
Leopoldo Trieste
Dying Man's Friend
Peter Copley
English Cardinal
Arthur Howard
English Cardinal
Arnaldo Caivano
Dying Man (uncredited)
Inna Alexeievna
Party Guest (uncredited)
Silvana Bacci
Party Guest (uncredited)
John Frederick
American Cardinal (uncredited)
Åke Lindman
Soldier Releasing Lakota (uncredited)
Lex Monson
Third African Priest (uncredited)
Dom Moor
Polish Cardinal (uncredited)
Antonio Proietti
Cardinal (uncredited)
Alfred Thomas
African Cardinal (uncredited)
