Category:Start-Class Catholicism articles

O

• Talk:Oak Knoll School of the Holy Child
• Talk:Frederick Oakeley
• Talk:Oakland Catholic High School
• Talk:Oaten Hill Martyrs
• Talk:Titus Oates
• Talk:Oath Against Modernism
• Talk:Obando Church
• Talk:Obando Fertility Rites
• Talk:Miguel Obando y Bravo
• Talk:Peregrin Obdržálek
• Talk:Obedientiary
• Talk:Sergio Obeso Rivera
• Talk:Thomas Obicini
• Talk:Oblate Sisters of St. Francis de Sales
• Talk:Oblate Sisters of the Virgin Mary of Fatima
• Talk:Oblates of Saints Ambrose and Charles
• Talk:Oblates of St. Francis de Sales
• Talk:Oblates of the Virgin Mary
• Talk:Patrick O'Boyle (cardinal)
• Talk:Obras Sociais Irmã Dulce
• Talk:Obregonian Brothers
• Talk:Obreption and subreption (Catholic canon law)
• Talk:Brendan O'Brien (bishop)
• Talk:Catherine Cecily O'Brien
• Talk:Cornelius O'Brien (bishop)
• Talk:Eris O'Brien
• Talk:Henry Joseph O'Brien
• Talk:James Joseph O'Brien
• Talk:Kevin F. O'Brien
• Talk:William David O'Brien
• Talk:Obsequium religiosum
• Talk:Alfredo Obviar
• Talk:Henry O'Callaghan
• Talk:Victor Ocampo
• Talk:Michael O'Carroll
• Talk:Occasion of sin
• Talk:Margherita Occhiena
• Talk:Jan Očko of Vlašim
• Talk:Anthony O'Connell
• Talk:David M. O'Connell
• Talk:Denis J. O'Connell
• Talk:Daniel O'Connor (bishop)
• Talk:Denis O'Connor (bishop)
• Talk:Hubert O'Connor
• Talk:Ignatius O'Connor
• Talk:John J. O'Connor (bishop of Newark)
• Talk:Mary Agnes O'Connor
• Talk:Michael O'Connor (American bishop)
• Talk:Patrick O'Connor (bishop)
• Talk:Sixtus O'Connor
• Talk:William Patrick O'Connor
• Talk:Octava
• Talk:Octave (liturgy)
• Talk:Octave of Easter
• Talk:October 1187 papal election
• Talk:October 1503 papal conclave
• Talk:Octobri mense
• Talk:Octogesima adveniens
• Talk:Oda of Meinersen
• Talk:John Baptist Odama
• Talk:Odda's Chapel
• Talk:Giacomo Oddi
• Talk:Giuseppe Oddi
• Talk:Silvio Oddi
• Talk:Ode de Pougy
• Talk:Edward John O'Dea
• Talk:Thomas O'Dea
• Talk:Adelhelm Odermatt
• Talk:Joseph Odermatt
• Talk:Carlo Odescalchi
• Talk:Giulio Maria Odescalchi
• Talk:Odo I of Beauvais
• Talk:Eugene O'Doherty (bishop)
• Talk:John Keys O'Doherty
• Talk:James Odongo
• Talk:Cletus F. O'Donnell
• Talk:Edward J. O'Donnell (academic administrator)
• Talk:Patrick O'Donnell (cardinal)
• Talk:Patrick Mary O'Donnell
• Talk:Timothy T. O'Donnell
• Talk:Oea
• Talk:John James Maximilian Oertel
• Talk:Eusebius of Esztergom
• Talk:Michael O'Farrell (bishop)
• Talk:Michael J. O'Farrell
• Talk:Office for the Liturgical Celebrations of the Supreme Pontiff
• Talk:Office of the Dead
• Talk:Officers of the County of Edessa
• Talk:Officers of the Kingdom of Jerusalem
• Talk:Officium Defunctorum (Victoria)
• Talk:Pádraig Ó Fiannachta
• Talk:Francis Joseph O'Finan
• Talk:Hugh O'Flaherty
• Talk:Timoteo Ofrasio
• Talk:Arthur O'Friel
• Talk:John Ogilvie (saint)
• Talk:Jón Ögmundsson
• Talk:Ognissanti, Florence
• Talk:Ognissanti, Rome
• Talk:Ognissanti, Venice
• Talk:John O'Grady (priest)
• Talk:Oliver O'Grady
• Talk:Eugene O'Growney
• Talk:Edwin Vincent O'Hara
• Talk:Gerald O'Hara
• Talk:John Francis O'Hara
• Talk:John Joseph O'Hara
• Talk:William O'Hara
• Talk:William F. O'Hare
• Talk:Thomas O'Herlahy
• Talk:John Francis O'Hern
• Talk:William O'Higgins
• Talk:Ohio Dominican University
• Talk:Saturnino Ohure
• Talk:Oignies Abbey
• Talk:Gilbert d'Oignies
• Talk:Óscar Vicente Ojea Quintana
• Talk:Peter Takeo Okada
• Talk:Joseph Thomas O'Keefe
• Talk:Valerian Okeke
• Talk:Gregory O'Kelly
• Talk:Thaddeus Okolo
• Talk:Michael Nnachi Okoro
• Talk:Godfrey Okoye
• Talk:Peter Okpaleke
• Talk:Ökumenischer Kirchentag 2021
• Talk:Linus Okok Okwach
• Talk:Raimundo Olabide
• Talk:Marcelino Olaechea
• Talk:Nicolaus Olahus
• Talk:Jeanne O'Laughlin
• Talk:Michel Olçomendy
• Talk:Old Cambrai Cathedral
• Talk:Old Cathedral of Lleida
• Talk:Old Cathedral of Plasencia
• Talk:Old Cathedral of Quelimane
• Talk:Old Cathedral of Rio de Janeiro
• Talk:Old Cathedral of St. Anthony, Guaratinguetá
• Talk:Old Cathedral of St. Barbara and St. Paul, Vitebsk
• Talk:Old Cathedral, Brescia
• Talk:Old Catholic Church of the Netherlands
• Talk:Old Chapter
• Talk:Old Church of Santa Venera
• Talk:Old Church of Siġġiewi
• Talk:Old Church of St Sebastian, Qormi
• Talk:Old Minster, Winchester
• Talk:Old Oton Church
• Talk:Old Road of Candelaria
• Talk:Old Roman Catholic Church in Great Britain
• Talk:Old Sarum Cathedral
• Talk:Old St. Joseph's Church
• Talk:Old St. Mary's Cathedral
• Talk:Old St. Mary's Church (Milwaukee, Wisconsin)
• Talk:Old St. Mary's Church (Tempe, Arizona)
• Talk:Old St. Peter's Church (Poughkeepsie, New York)
• Talk:Richard Oldham (bishop)
• Talk:Arthur O'Leary (preacher)
• Talk:Francis O'Leary
• Talk:Henry Joseph O'Leary
• Talk:Louis James O'Leary
• Talk:Tommaso da Olera
• Talk:Marian Oleś
• Talk:Olimje Castle
• Talk:Alessandro Oliva
• Talk:Pierre Olivaint
• Talk:Joan Perez Garcia de Olivan
• Talk:Walmor Oliveira de Azevedo
• Talk:Vilson Dias de Oliveira
• Talk:Oliver, Bishop of Syrmia
• Talk:Oliver of Ancona
• Talk:Oliver of Paderborn
• Talk:George Oliver (historian)
• Talk:Mario Oliveri
• Talk:Olivetans
• Talk:Leonard Olivier
• Talk:Oliwa Cathedral
• Talk:Andrés de Olmos
• Talk:Thomas Olmsted
• Talk:Patrick O'Loughran
• Talk:Stefan Olshavskyi
• Talk:Michael Fors Olson
• Talk:Jan Olszanski
• Talk:Øm Abbey
• Talk:Ambrose O'Madden
• Talk:George Omaira
• Talk:John W. O'Malley
• Talk:Thomas P. O'Malley
• Talk:William O'Malley (Jesuit)
• Talk:Carol Anne O'Marie
• Talk:Edward O'Meara
• Talk:Juan José Omella
• Talk:Luigi Omodei (1607–1685)
• Talk:John O'Molony (1591–1651)
• Talk:On the Trinity
• Talk:John Onaiyekan
• Talk:One Hundred and Seven Martyrs of England and Wales
• Talk:Onold
• Talk:Ons' Lieve Heer op Solder
• Talk:Ontario English Catholic Teachers' Association
• Talk:Oosteeklo Abbey