R
- Rabbi and Rabbinism
- Rabbulas
- Raccolta
- Rachel
- Radulph of Rivo
- Rafael Carrera
- Rafael Ferrer
- Raffaele Garrucci
- Raffaele Venusti
- Raffaello Morghen
- Raffaelo Maffei
- Ragusa
- Raimundo Diosdado Caballero
- Rainald of Dassel
- Rajpootana
- Ralph Baines
- Ralph de Diceto
- Ramatha
- Ramon de la Cruz
- Ramsey Abbey
- Raneiro Sacchoni
- Ranulf de Glanville
- Ranulf Higden
- Raoul Glaber
- Raphael (1483-1520)
- Raphael Badius
- Raphael Semmes
- Raphoe
- Raskolniks
- Ratherius of Verona
- Ratio Studiorum
- Rationale
- Rationalism
- Ratisbon
- Ratramnus
- Ratzeburg
- Ravenna
- Raymond Bonal
- Raymond Breton
- Raymond Caron
- Raymond d'Agiles
- Raymond IV
- Raymond Lully
- Raymond Martini
- Raymond of Sabunde
- Raymond VI
- Raymond VII
- Reading Abbey
- Reason
- Recanati and Loreto
- Rechab and the Rechabites
- Recollection
- Rector
- Rector Potens, Verax Deus
- Red Sea
- Redemption
- Redemption in the Old Testament
- Redemptoristines
- Redemptorists
- Reductions of Paraguay
- Referendarii
- Reform of a Religious Order
- Reform of the Calendar
- Reform of the Roman Breviary
- Reformed Churches
- Regalia
- Regeneration
- Reggio Dell' Emilia
- Reggio di Calabria
- Regina
- Regina Coeli (Queen of Heaven)
- Reginald Cardinal Pole
- Reginald of Piperno
- Reginald Pecock
- Regino of Prum
- Regionarii
- Regulae Juris
- Regulars
- Reichenau
- Reifenstein
- Reims
- Reinmar of Hagenau
- Relation of God to the Universe
- Relationship
- Relativism
- Relics
- Religion
- Religious Communities of the Name of Jesus
- Religious Congregations of the Holy Ghost
- Religious Congregations of the Presentation
- Religious Discussions
- Religious Dower
- Religious Indifferentism
- Religious Life
- Religious Obedience
- Religious of Jesus Mary
- Religious of Perpetual Adoration
- Religious of the Cenacle
- Religious of the Perpetual Adoration
- Religious Painting
- Religious Profession
- Religious Song
- Religious Toleration
- Religious Veil
- Reliquaries
- Remesiana
- Remi Ceillier
- Remigius of Auxerre
- Remiremont
- Renaud de Beaune
- Rene Descartes
- Rene Francois Rohrbacher
- Rene Goupil
- Rene Massuet
- Rene Menard
- Rene Rapin
- Rene-Aubert, Sieur de Vertot
- Rene-Edouard Caron
- Rene-Just Hauy
- Rene-Prosper Tassin
- Rene-Robert-Cavelier, Sieur de La Salle
- Renee-Theophile-Hyacinthe Laennec
- Rennes
- Renunciation
- Reordinations
- Reorganization of the English Hierarchy
- Reparation
- Republic of Costa Rica
- Reputation (As Property)
- Requiem Masses
- Rerum Creator Optime
- Rerum Deus Tenax Vigor
- Rerum Novarum
- Reservation
- Reservation of the Blessed Sacrament
- Reserved Cases
- Responsorium
- Restitution
- Resurrection of Jesus Christ
- Retreat of the Sacred Heart
- Retreats
- Reuss
- Revelation
- Revision of Vulgate
- Revocation
- Rex Gloriose Martyrum
- Rex Sempiterne Caelitum
- Reyer Anslo
- Rhaetia
- Rhaphanaea
- Rhenish Palatinate
- Rhesaena
- Rhinocolura
- Rhithymna
- Rhizus
- Rhode Island
- Rhodes
- Rhodesia
- Rhodiopolis
- Rhodo
- Rhosus
- Rhymed Bibles
- Rhythmical Office
- Ricardus Anglicus
- Richard (Franciscan Preacher)
- Richard Angelus a S. Francisco Mason
- Richard Archdeacon
- Richard Bristow
- Richard Broughton
- Richard Byrne
- Richard Challoner
- Richard Crashaw
- Richard Creagh
- Richard de Bury
- Richard Doyle
- Richard Fitzralph
- Richard Fleming
- Richard Gerard
- Richard Gibbons
- Richard Hurst
- Richard I, King of England
- Richard Lalor Sheil
- Richard Langhorne
- Richard Langley
- Richard Malcolm Johnston
- Richard McSherry
- Richard of Cirencester
- Richard of Cornwall
- Richard of Ingworth
- Richard of Middletown
- Richard of St. Victor
- Richard Risby
- Richard Rolle de Hampole
- Richard Russell
- Richard Sampson
- Richard Shelley
- Richard Simpson
- Richard Smith
- Richard Smith
- Richard Stanyhurst
- Richard Thimelby
- Richard Ullerston
- Richard Verstegan
- Richard Wilton
- Richmond
- Ricoldo Da Monte di Croce
- Riemenschneider
- Rieti
- Right
- Right Honourable Sir John Sparrow David Thompson
- Right of Exclusion
- Right of Option
- Right of Presentation
- Right of Voluntary Association
- Rimini
- Rimouski
- Rings
- Rio Negro
- Riobamba
- Ripatransone
- Rites
- Rites in the United States
- Ritschlianism
- Ritual
- Ritual of Marriage
- Ritualists
- Robber Council of Ephesus (Latrocinium)
- Robert Abercromby
- Robert Aske
- Robert Aston Coffin
- Robert Bickerdike
- Robert Blackburne
- Robert Cenalis
- Robert Ciboule
- Robert de Coucy
- Robert De' Nobili
- Robert Dymoke
- Robert Fabyan
- Robert Gradwell
- Robert Grosseteste
- Robert Guerard
- Robert Guiscard
- Robert Henryson
- Robert Isaac Wilberforce
- Robert Joseph Pothier
- Robert Kilwardby
- Robert Mannyng of Brunne
- Robert Nanteuil
- Robert Nutter and Edward Thwing
- Robert of Arbrissel
- Robert of Courcon
- Robert of Geneva
- Robert of Jumieges
- Robert of Luzarches
- Robert of Melun
- Robert Persons
- Robert Phillip
- Robert Plowden
- Robert Pullen
- Robert Pullus
- Robert Stephen Hawker
- Robert Wace
- Robert Walsh
- Robert White
- Robert Whitty
- Rocamadour
- Roch-Amboise-Auguste-Bebian
- Rochambeau
- Rochester
- Rochester
- Rochet
- Rockford
- Rockhampton
- Rococo Style
- Rodez
- Rodriguez Sanchez de Arevalo
- Roermond
- Rogation Days
- Roger Anderton
- Roger Bacon
- Roger Brooke Taney
- Roger of Hoveden
- Roger of Wendover
- Roger William Vaughan
- Roger, Bishop of Worcester
- Rogier van Der Weyden
- Rohault de Fleury
- Rolduc
- Rolls Series
- Roman Academies
- Roman Catacombs
- Roman Catechism
- Roman Catholic
- Roman Catholic Relief Bill
- Roman Colleges
- Roman Curia
- Roman Hinderer
- Roman Historical Institutes
- Roman Law
- Roman Processional
- Roman Sebastian Zangerle
- Rome
- Romulus Augustulus
- Rood
- Rorate Coeli
- Roscelin
- Roscommon
- Rose Whitty
- Rose Window
- Rosea
- Roseau
- Rosenau
- Rosicrucians
- Rosmini and Rosminianism
- Rosminians
- Ross
- Rossano
- Rottenburg
- Rotuli
- Rouen
- Ruben (Reuben)
- Rubrics
- Rudolf of Fulda
- Rudolf of Habsburg
- Rudolf of Rudesheim
- Rudolf von Ems
- Rudolph Agricola
- Rudolph von Langen
- Rudolph William Basil Feilding
- Rufford Abbey
- Ruggiero Giovanelli
- Ruggiero Giuseppe Boscovich
- Rule of Saint Francis
- Rule of St. Augustine
- Rule of St. Basil
- Rule of St. Benedict
- Rumania
- Rusaddir
- Rusicade
- Ruspe
- Russia
- Russian Language and Literature
- Ruthenian Rite
- Ruthenians
- Ruvo and Bitonto
- St. Raphael the Archangel
- St. Raymond Nonnatus
- St. Raymond of Penafort
- St. Richard de Wyche
- St. Rimbert
- St. Rita of Cascia
- St. Robert
- St. Robert Bellarmine
- St. Robert of Molesme
- St. Robert of Newminster
- St. Roch
- St. Romanos
- St. Romuald
- St. Ronan
- St. Rosalia
- St. Rose of Lima
- St. Rose of Viterbo
- St. Roseline
- St. Ruadhan
- St. Rupert
- St. Rusticus of Narbonne
- The Rambler
- The Real Presence of Christ in the Eucharist
- The Reformation
- The Religion of Russia
- The Religion of Shakespeare (Was Shakespeare Catholic?)
- The Renaissance
- The Restored Jesuits (1814-1912)
- The Ring of Fisherman
- The Rite of Constantinople (Byzantine Rite)
- The Roman Congregations
- The Roman Rite
- The Rosary
- The Royal Declaration
- The Royal Veto
- The Rule of Faith