- Cosimo Fusco - Father Simeon
- Victor Alfieri - Lieutenant Valenti
- Curt Lowens - Cardinal Ebner
- Marc Fiorini - Cardinal Baggia
- Carmen Argenziano - Father Silvano Bentivoglio
- Howard Mungo - Cardinal Yoruba
- Rance Howard - Cardinal Beck
- Steve Franken - Cardinal Colbert
- Gino Conforti - Cardinal Pugini
- Elya Baskin - Cardinal Petrov
- Thomas Morris - Urs Weber
- Jonas Fisch - Adrian Bachman
- August Wittgenstein - Swiss Guardsman
- Ben Bela Böhm - Swiss Guardsman
- Jeffrey Boehm - Swiss Guard Blue
- Steve Kehela - American Reporter
- Ursula Brooks - BBC Reporter
- Rashmi - British Reporter
- Yan Cui - Chinese Reporter
- Fritz Michel - French Reporter
- Maria Cristina Heller - Italian Reporter
- Rafael Petardi - Italian Reporter
- Yesenia Adame - Mexican Reporter
- Kristof Konrad - Polish Reporter
- Masasa Moyo - South African Reporter
- Ed Francis Martin - South American Reporter
- Cheryl Howard - CERN Scientist
- Endre Hules - CERN Scientist
- Norbert Weisser - CERN Scientist
- Vanna Salviati - Protester
- Raffi Di Blasio - Protester
- Rocco Passafaro - Carabinieri
- Emanuele Secci - Carabinieri
- Anna Katarina - Docent
- James Ritz - Tourist
- Jose David Acevedo - Italian Police (uncredited)
- Roy Allen III - Cardinal (uncredited)
- Victor of Aquitaine - Vatican Choir Member (uncredited)
- Michael Ark - CNN Reporter (uncredited)
- John Jason Bailey - Swiss Guard Blue (uncredited)
- Jerred Berg - Stem Cell Protestor #2 (uncredited)
- Sally Berman - Vatican Square Singer (uncredited)
- Yuki Bird - Scientist (uncredited)
- Anthony Bonaventura - Vatican Police (uncredited)
- Ciara Bravo - Italian Girl (uncredited)
- Michael Patrick Breen - Ukrainian General (uncredited)
- Aidan Bristow - Conclave Priest #1 (uncredited)
- Christopher Casa - Tourist (uncredited)
- Patrick Casa - Choirboy / Tourist (uncredited)
- Pasquale Cassalia - Rai Reporter (uncredited)
- Jimmy Clabots - Vatican Choir Member (uncredited)
- Austin Michael Coleman - Young Funeral Mourner (uncredited)
- Robert Corvin - U.S. Army General (uncredited)
- Gina D'Acciaro - Vatican Square Singer (uncredited)
- John Dardenne - Swiss Guard Multicolor (uncredited)
- William "Will" Daubert - Priest (uncredited)
- Vincent De Paul - Vatican Pall Bearer (uncredited)
- Calvin Dean - Choir Member #1 (uncredited)
- Norman Deesing - Italian Mourner (uncredited)
- Angelique Deuitch - Tourist (uncredited)
- Paul DiVito - Priest (uncredited)
- Brant Dorman - Swiss Guard Blue (uncredited)
- Jonn Faircrest - Papal Photographer (uncredited)
- Les Feltmate - Priest (uncredited)
- Amanda Jane Fleming - Tourist (uncredited)
- David Fletcher - Protestor #3 (uncredited)
- Gregory George Frank - Protester (uncredited)
- Nancy Gassner-Clayton - Vatican Square Singer (uncredited)
- Justin Giddings - Vatican Choir Member (uncredited)
- Alan Gray - Greek Patriarch Priest (uncredited)
- Roger Groh - Good Bishop (uncredited)
- Nancy Guerriero - Vatican Nun (uncredited)
- Martin Harris - Polish Reporter (uncredited)
- Miriam Harris - Mourner (uncredited)
- David Hill - Pantheon Tourist (uncredited)
- Brett Hunt - Vatican Priest (uncredited)
- Marco Infante - Italian Mourner (uncredited)
- Christopher Karl Johnson - Cardinal (uncredited)
- Dave Johnson - Press Photographer (uncredited)
- Gina Juliet - Vatican Square Singer (uncredited)
- Slim Khezri - Vatican Square Gypsy (uncredited)
- Sophiah Koikas - Tourist (uncredited)
- Michael Laren - Vatican Choir Singer (uncredited)
- Adrian Lee - Vatican Square Soloist (uncredited)
- David Michael Lewin - Mourner (uncredited)
- Maynor Lopez - Carabinieri (uncredited)
- Jon Lucero - Vatican Police Officer (uncredited)
- Eder López - Italian Citizen (uncredited)
- Julie Mabry - Protester in Vatican (uncredited)
- Les Mahoney - Hip Priest (uncredited)
- Gary Mandarino - Mourner (uncredited)
- Albert Marrero Jr. - News Camerman (uncredited)
- Sandra McCurdy - Italian Tourist (uncredited)
- Anthony Molinari - Vatican Guard (uncredited)
- Mary E. Morales - Vatican Square Soloist (uncredited)
- Sauvion Morkunas - Flag-bearer (uncredited)
- Manuel Nardi - Priest (Mr. Grey's Men) (uncredited)
- Dale Pavinski - Carabinieri Captain (uncredited)
- David Pearl - Priest (uncredited)
- Jarrod Robbins - Swiss Guardsman (uncredited)
- Bertrand Roberson Jr. - Tourist (uncredited)
- John Robert - Tourist with Hat (uncredited)
- Franklin Ruehl - Mourner (uncredited)
- Kelly Ryan - Protestor #4 (uncredited)
- Dylan Saccoccio - Carabinieri (uncredited)
- Frank Scozzari - Vatican Police Officer (uncredited)
- James Seaman - Costudi (uncredited)
- Keith Shawn - Vatican Tourist (uncredited)
- Jutta Speidel - Woman (uncredited)
- Arne Starr - Vatican Priest (uncredited)
- Nico Toffoli - Carabieniere Riot (uncredited)
- Julian Vada - Carabinieri (uncredited)
- Ryan Van de Kamp Buchanan - The Swiss Guard (uncredited)
- Ernie Ventry - Gypsy in Square (uncredited)
- Shannon Watson - Swiss Guard (uncredited)
- Jon Morgan Woodward - The American with the Sign (uncredited)
- Alfred Molina - Narrator (voice)
- Todd Hallowell
- Francesco Civita
- Inti Carboni
- Nick Satriano
- Simonetta Valentini
- Alessandra Fortuna
- Akiva Goldsman
- Ron Howard
- Sam Breckman
- Federico Santangelo
- Janet Hirshenson
- Brian Grazer
- Chris Baugh
- Angelo Bonanni
- Gary A. Hecker
- Deborah Wallach
- Kevin Kaska
- Hans Zimmer
- James Matheny
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