- Radegundes, Queen of France
- Raphael the Archangel
- Raymond of Pennafort, Dominican, Archbishop
- Raymund Nonnatus, Religious of Our Lady of Mercy and Cardinal
- Redeemer: Feast of the Holy Redeemer
- Relics: Feast of the Holy Relics
- Remi, Bishop
- René Goupil (one of the Holy North American Martyrs
- Richard of Chichester, Bishop
- Ricovero Uguccione, one of the Seven Holy Servite Founders
- Rita of Cascia, Widow
- Robert of Arbrissel, Abbot
- Robert Bellarmine, Doctor of the Church, Cardinal
- Roch, Confessor
- Rogatian (and Donatian), Martyrs
- Romanus, Martyr
- Romanus and Lupicinus his brother, Abbots
- Romuald, Founder and Abbot
- Rosalia, Virgin
- Rosary: Our Lady of the Rosary
- Rose of Lima, Virgin
- Rose of Viterbo, Virgin
