- Regula (Benedict, Saint, Abbot of Monte Cassino)1
- Religion1
- Religions1
- Remboîtage1
- Remoldus, Bishop of Ozilia1
- Rendón y Sarmiento family1
- Rent1
- Repentance--Judaism1
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- Ressano, Catterina1
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- Riario, Raffaello, 1451-15211
- Ribera, Teresa de1
- Ricciardi, Taddeo1
- Richard III, King of England, 1452-14851