New Mexico

New Norcia

Archdiocese of New Orleans

Vicariate Apostolic of New Pomerania

Diocese of Newport

John Newton

New Year's Day

Archdiocese of New York

State of New York

New Zealand

Nicæa

Councils of Nicæa

Republic and Diocese of Nicaragua

Nicastro

Niccola Pisano

Diocese of Nice

Nicene and Niceno-Constantinopolitan Creed

St. Nicephorus

Jean-Pierre Nicéron

Nicetas

St. Nicetius

Niche

Pope St. Nicholas I

Pope Nicholas II

Pope Nicholas III

Pope Nicholas IV

Pope Nicholas V

Bl. Nicholas Justiniani

Nicholas of Cusa

Bl. Nicholas of Flüe

Nicholas of Gorran

Nicholas of Lyra

St. Nicholas of Myra

Nicholas of Osimo

Nicholas of Strasburg

St. Nicholas of Tolentino

St. Nicholas Pieck

Ven. George Nichols

Francis Nicholson

Nicodemus

Jean Nicolaï

Nicolaites

Armella Nicolas

Auguste Nicolas

Nicolaus Germanus

Pierre Nicole

Diocese of Nicolet

Nicolò de' Tudeschi

St. Nicomedes

Nicomedia

Nicopolis (1)

Diocese of Nicopolis (Nicopolitana)

Nicopolis (3)

Titular Archdiocese of Nicosia

Nicosia

Diocese of Nicotera and Tropea

John Nider

Juan Eusebio Nieremberg y Otin

Hans Niessenberger

Peter George Niger

Upper and Lower Nigeria

Nihilism

Barthold Nihus

Nikolaus von Dinkelsbühl

Nikon

Nikolaus Nilles

Nilopolis

St. Nilus

Nilus the Younger

Nimbus

Diocese of Nîmes

St. Ninian

Joseph Nirschl

Nisibis

Nithard

Louis-Antoine de Noailles

Robert de' Nobili

Daniel Noble

Diocese of Nocera

Diocese of Nocera dei Pagani

Nocturns

Noe

Guillaume de Nogaret

Diocese of Nola

Giovanni Marliano da Nola

Jean-Antoine Nollet

Nominalism, Realism, Conceptualism

Nomination

Nomocanon

Nonantola

Nonconformists

None

Non Expedit

Non-Jurors

Claude-Adrien Nonnotte

Nonnus

St. Norbert

Diocese of Norcia

Catholic Dukes of Norfolk

Henry Noris

Normandy

Sylvester Norris

Diocese of Northampton

North Carolina

James Spencer Northcote

North Dakota

Prefecture Apostolic of the Northern Territory

Northmen

Christopher Norton

Norway

Ancient Diocese of Norwich

Notaries

St. Notburga

Jean-Baptiste Nothomb

Notitia Dignitatum

Notitiae Episcopatuum

Notitia Provinciarum et Civitatum Africae

Notker

Diocese of Noto

Notoriety, Notorious

Congregations of Notre Dame

University of Notre Dame du Lac

Diocese of Nottingham

Jean-Felix Nourrisson

Jean-Felix Nourrisson

Diocese of Novara

Nova Scotia

Novatian and Novatianism

St. Novatus

Novena

Novice

Nubia

Diocese of Nueva Cáceres

Diocese of Nueva Pamplona

Diocese of Nueva Segovia

Francis Nugent

James Nugent

Use of Numbers in the Church

Numismatics

Nunc Dimittis

Nuncio

Pedro Nunez

Nuns

Nuremberg

Diocese of Nusco

Johann Nepomuk von Nussbaum

Ven. Robert Nutter

Wilhelmus Nuyens

Vicariate Apostolic of Nyassa

Nyssa

Frederick Oakeley

O Antiphons

Oates's Plot

Oaths

English Post-Reformation Oaths

Archdiocese of Oaxaca

Monastery of Obazine

Obba

Obedience

Religious Obedience

Obedientiaries

Oblate Sisters of Providence

Oblates of Mary Immaculate

Oblates of Saint Francis de Sales

Oblati

Obligation

Tighernach O'Braein

Obregonians

Obreption

Terence Albert O'Brien

David O'Bruadair

Edmund Bailey O'Callaghan

Torlogh O'Carolan

Occasionalism

Occasions of Sin

Thomas Occleve

Occult Art, Occultism

Occurrence

Vicariate Apostolic of Central Oceania

Daniel O'Connell

Charles O'Conor (1)

Charles O'Conor (2)

Octavarium Romanum

Octave

Gelasius O'Cullenan

Eugene O'Curry

Daniel O'Daly

Donogh Mór O'Daly

Carlo Odescalchi

O Deus Ego Amo Te

Cornelius O'Devany

St. Odilia

St. Odilo

John Mary Odin

Walter Odington

St. Odo

St. Odo (Oda)

Odo

Edmund O'Donnell

John O'Donovan

Bl. Odo of Cambrai

Odo of Canterbury

Odo of Cheriton

Odo of Glanfeuil

John O'Dugan

Joseph O'Dwyer

Johann Œcolampadius

Episcopal œconomus

Œcumenius

John James Maximilian Oertel

Oettingen

Offa

Offerings

Offertory

Divine Office

Office of the Dead

Maurice O'Fihely

O Filii et Filiæ

Diocese of Ogdensburg

Marco D'Oggione

Ven. John Ogilvie

Diocese of Ogliastra

Eugene O'Growney

John O'Hagan

Thomas O'Hagan

John O'Hanlon

Theodore O'Hara

Patrick O'Hely

Thomas O'Herlahy

Ambrose Bernard O'Higgins

Ohio

Aloys Karl Ohler

Dermod O'Hurley

Maelbrighte O'Hussey

Oil of Saints

Ointment in Scripture

Alonso de Ojeda

Jean d'Okeghem

Oklahoma

St. Olaf Haraldson

Nicolaus Oláh

Olba

Old Catholics

Old Chapter

Ven. Edward Oldcorne

Oldenburg

Old Hall (St. Edmund's College)

Hugh Oldham

Augustino Oldoini

Arthur O'Leary

Olenus

Zbigniew Olesnicki

Jean-Jacques Olier

Diocese of Olinda

Oliva

Gian Paolo Oliva

Pierre Olivaint

George Oliver

Mount Olivet

Olivetans

Pierre Jean Olivi

Olivier de la Marche

Léon Ollé-Laprune

Archdiocese of Olmütz

Michael O'Loghlen

St. Olympias

Olympus

Diocese of Omaha

Ombus

Kathleen O'Meara

St. Omer

Omission

Omnipotence

Hugh O'Neill

Owen Roe O'Neill

Onias

Ontario

Ontologism

Ontology

Shrine of Oostacker

Ophir

Diocese of Oporto

Gilles-Marie Oppenordt

Diocese of Oppido Mamertina

St. Optatus

Optimism

Right of Option

Malachias O'Queely

Oracle

Diocese of Oran

Councils of Orange

Orange Free State

Vicariate Apostolic of Orange River

Orans

Orate Fratres

Oratorio

Oratory

Oratory of Saint Philip Neri

Nicolas d'Orbellis

Orcagna

Orcistus

Ordeals

Ordericus Vitalis

Holy Orders

Ordinariate

Ordinary

Ordines Romani

Oregon

Archdiocese of Oregon City

Bernard O'Reilly

Edmund O'Reilly (1)

Edmund O'Reilly (2)

Hugh O'Reilly

John Boyle O'Reilly

Myles William Patrick O'Reilly

Oremus

Diocese of Orense

Nicole Oresme

Organ

Diocese of Oria

Barnaba Oriani

Oriental Study and Research

Orientation of Churches

Orientius

Oriflamme

Origen and Origenism

Original Sin

Diocese of Orihuela

St. Joseph Oriol

Diocese of Oristano

Orkneys

Niccolò Orlandini

Councils of Orléans

Diocese of Orléans

Barent Van Orley

Philibert de l'Orme

Oropus

Patrick Henry O'Rorke

Paulus Orosius

Orphans and Orphanages

Giuseppe Agostino Orsi

Orsini

Orsisius

Abraham Ortelius

Orthodox Church

Orthodoxy

Feast of Orthodoxy

Orthosias

Ortolano Ferrarese

Orval

Diocese of Orvieto

Matthieu Ory

Diocese of Osaka

O Salutaris Hostia

Osbald

Ven. Edward Osbaldeston

Osbern

Oscott (St. Mary's College)

Osee

Diocese of Osimo

Diocese of Osma

St. Osmund

Diocese of Osnabrück

Arnaud d'Ossat

Diocese of Ossory

Ostensorium

Suburbicarian Diocese of Ostia and Velletri

Ostiensis

Ostracine

Christian Ostraka

Ostrogoths

Philip O'Sullivan Beare

St. Oswald (1)

St. Oswald (2)

St. Oswin

Otfried of Weissenburg

Othlo

St. Othmar

Marcus Salvius Otho

Archdiocese of Otranto

Archdiocese of Ottawa

University of Ottawa

St. Otto

Otto I, the Great

Otto II

Otto III

Otto IV

Ottobeuren

Otto of Freising

Otto of Passau

Otto of St. Blasien

St. Ouen

Feast of Our Lady, Help of Christians

Feast of Our Lady of Good Counsel

Brothers of Our Lady of the Fields

Feast of Our Lady of the Snow

Friedrich Overbeck

Bernhard Heinrich Overberg

Diocese of Oviedo

Nicholas Owen

John Oxenford

Henry Nutcombe Oxenham

Oxford

University of Oxford

Oxford Movement (1833-1845)

Oxyrynchus

Antoine-Frédéric Ozanam

Jacques Ozanam

Ozias

Pacandus

Bartolommeo Pacca

St. Pachomius

George Michael Pachtler

Pacificus

Bl. Pacificus of Ceredano

St. Pacificus of San Severino

Lucas Pacioli

Diocese of Paderborn

Juan de Padilla

Diocese of Padua

University of Padua

Paganism

Mario Pagano

Ven. Anthony Page

Antoine Pagi

Santes Pagnino

Religious Painting

Pakawá Indians

Palæography

Palæontology

Juan de Palafox y Mendoza

Ven. Thomas Palasor

Rhenish Palatinate

Palatini

Prefecture Apostolic of Palawan

Diocese of Palencia

Paleopolis

Gabriele Paleotti

Archdiocese of Palermo

University of Palermo

Diocese of Palestrina

Giovanni Pierluigi da Palestrina

Frederick Apthorp Paley

Pall

Andrea Palladio

St. Palladius

Palladius

Pietro Sforza Pallavicino

Pallium

Ven. Vincent Mary Pallotti

Palma Vecchio

William Palmer

Domenico Palmieri

Luigi Palmieri

Palm in Christian Symbolism

Palm Sunday

Palmyra

Francisco Palou

Paltus

Peter Paludanus

Pamelius

Diocese of Pamiers

St. Pammachius

St. Pamphilus of Cæsarea

Diocese of Pamplona

Republic and Diocese of Panama

Pandects

Pandulph

Panemotichus

Pange Lingua Gloriosi

Francesco Panigarola

Arnold Pannartz and Konrad Sweinheim

Arnold Pannartz and Konrad Sweinheim

Pano Indians

Panopolis

Panpsychism

Pantænus

St. Pantaleon

Pantheism

Onofrio Panvinio

Gregorio Panzani

Ven. Angelo Paoli

Papacy

Pápago Indians

Papal Arbitration

Papal Elections

Paphnutius

Paphos

St. Papias

Bernardus Papiensis

Nicholas Papini

Parables

Parabolani

Theophrastus Paracelsus

Paraclete

François Para du Phanjas

Parætonium

Paraguay

Books of Paralipomenon

Diocese of Parahyba

Parallelism

Psycho-Physical Parallelism

Paralus

Diocese of Paraná

Parasceve

Paray-le-Monial

Ignace-Gaston Pardies

Pardons of Brittany

Ambroise Paré

Francisco Pareja

Parents

Diocese of Parenzo-Pola

Giuseppe Parini

Paris

University of Paris

Alexis-Paulin Paris

Gaston-Bruno-Paulin Paris

Matthew Paris

Parish

Parium

Abbey of the Park

Anthony Parkinson

Parlais

Filippo Parlatore

Diocese of Parma

Antoine-Augustin Parmentier

Il Parmigiano

Parnassus

Parochial Mass

Parœcopolis

Dominique Parrenin

Parsis

Partnership

Paolo Paruta

Blaise Pascal

St. Pascal Baylon

Pasch or Passover

Pope Paschal I

Pope Paschal II

Paschal III

Paschal Candle

Paschal Tide

St. Paschasius

St. Paschasius Radbertus

Carlo Passaglia

Diocese of Passau

Ven. Joseph Passerat

Domenico Passignano

Domenico Passionei

Passionists

Passion Music

Commemoration of the Passion of Christ

Passion Offices

Devotion to the Passion of Jesus Christ

Passion of Jesus Christ in the Four Gospels

Passion Plays

Passions

Passion Sunday

Passiontide

Passos

Louis Pasteur

Diocese of Pasto

Pastor

Crusade of the Pastoureaux

Patagonia

Patara

Paten

Ven. William Patenson

Mental Pathology

Coventry Patmore

Patmos

Patras

Patriarch

Patriarch and Patriarchate

Patrician Brothers

St. Patrick

Francis Xavier Patrizi

Patrology

Feast of the Patronage of Our Lady

Patron and Patronage

Patron Saints

Diocese of Patti

St. Paul

Pope Paul I

Pope Paul II

Pope Paul III

Pope Paul IV

Pope Paul V

St. Paula

Johannes Pauli

Paulicians

St. Paulinus

St. Paulinus, Bishop of Nola

St. Paulinus II, Patriarch of Aquileia

Paulinus a S. Bartholomaeo

Paulinus of Pella

Paulists

Paul of Burgos

Paul of Middelburg

Paul of Samosata

St. Paul of the Cross

St. Paul the Hermit

St. Paul the Simple

Paulus Diaconus

Paulus Venetus

Diocese of Pavia

Nicolas Pavillon

Pax

Pax in the Liturgy

Mariano Payeras

Peter Pázmány

Peace Congresses

War of the Peasants (1524-25)

Peba Indians

John Pecham

Reginald Pecock

Pectoral

Pectorale

Pednelissus

Pedro de Cordova

Pelagia

Pope Pelagius I

Pope Pelagius II

Pelagius and Pelagianism

Ambrose Pelargus

Paul Pelisson-Fontanier

Pella

Pierre-Joseph Pelletier

Silvio Pellico

Guillaume Pellissier

Diocese of Pelotas

Théophile-Jules Pelouze

Pelusium

Diocese of Pembroke

Francisco Peña

Penal Laws

Luis Ignatius Peñalver y Cardenas

Penance

Henry Pendleton

Penelakut Indians

Los Hermanos Penitentes

Penitential Canons

Penitential Orders

Confraternities of Penitents

Diocese of Penne and Atri

Pennsylvania

Penobscot Indians

Ecclesiastical Pension

Pentacomia

Pentapolis

Pentateuch

Feast of Pentecost (of the Jews)

Diocese of Peoria

Peoria Indians

Pepin the Short

John Percy

Peregrinus

Benedict Pereira

Juan Perez

Ginés Pérez de Hita

Christian and Religious Perfection

Pergamus

Perge

Giovanni Battista Pergolesi

Pericui Indians

Diocese of Périgueux

Periodi

Periodical Literature

Perjury

Franz Michael Permaneder

Joseph Maria Pernter

Religious of Perpetual Adoration

Religious of the Perpetual Adoration

Sisters of the Perpetual Adoration

Perpetual Adorers of the Blessed Sacrament

Sisters of Our Lady of Perpetual Help

Our Lady of Perpetual Succour

St. Perpetuus

Diocese of Perpignan

Adolphe Perraud

Charles Perrault

Claude Perrault

Henri Perreyve

Giovanni Perrone

Stephen Joseph Perry

Persecution

Coptic Persecutions

Final Perseverance

Persia

Ignatius Persico

Person

Ecclesiastical Person

Personality

Robert Persons

Diocese of Perth

Publius Helvius Pertinax

Peru

Archdiocese of Perugia

Perugino (Pietro Vannucci)

Baldassare Peruzzi

Diocese of Pesaro

Pescennius Niger

Tilmann Pesch

Diocese of Pescia

Pessimism

Pessinus

Pestalozzi and Pestalozzianism

Denis Pétau

St. Peter

Epistles of St. Peter

Sarah Peter

Sts. Peter Baptist and Twenty-five Companions

Peterborough Abbey

Diocese of Peterborough

Bl. Peter Canisius

Peter Cantor

Peter Cellensis

St. Peter Chrysologus

St. Peter Claver

Peter Comestor

St. Peter Damian

Peter de Blois

Peter de Honestis

St. Peter de Regalado

Peter de Vinea

Bl. Peter Faber

St. Peter Fourier

Peter Fullo

St. Peter Gonzalez

Bl. Peter Igneus

Peter Lombard (2)

Bl. Pierre-Louis-Marie Chanel (1)

Peter Mongus

St. Peter Nolasco

St. Peter of Alcántara

St. Peter of Alexandria

Peter of Aquila

St. Peter of Arbues

Peter of Auvergne

Peter of Bergamo

Peter of Poitiers

St. Peter of Sebaste

St. Peter of Verona

Peterspence

Gerlac Peterssen

Peter the Hermit

St. Peter Urseolus

Petinessus

Matthieu Petit-Didier

Petitions to the Holy See

Petra

Francesco Petrarch

Family of Petre

Petrobrusians

St. Petronilla

St. Petronius

Diocese of Petropolis

Ottavio dei Petrucci

Petrus Alfonsus

Petrus Bernardinus

Petrus Diaconus

Petrus de Natalibus

Petun Nation

George von Peuerbach

Conrad Peutinger

William Peyto

Pez

Franz Pfanner

Johannes Pfefferkorn

Adolf Pfister

Julius von Pflug

Pforta

Phacusa

Pharao

Pharbætus

Pharisees

Pharsalus

Phaselis

Phasga

Phenomenalism

Philadelphia

Archdiocese of Philadelphia

Philanthropinism

St. Philastrius

Philemon

St. Philip the Apostle