Vatican City, Saint Oswin

• Vatican City
• Saint Odo the Good
• Saint Olaf
• Saint Olympias
• Saint Omer
• Saint Optatus of Milevis
• Saint Osmund
• Saint Oswald of Northumbria
• Saint Oswald of York
• Saint Oswin
• Saint Othmar
• Saint Ouen
• Saint Ouen Works
• Saint Pachomius
• Saint Palladius of Ireland
• Saint Pammachius
• Saint Pammachius Works