- Royal supremacy (Church of England)1
- Rucellai, Cosimo, 1495-15191
- Rueda family1
- Rueda, Baltasar de, active 1553-15691
- Rueda, Bernardino de, active 1553-15691
- Rueda, Luis de, active 1553-15691
- Rueda, Rodrigo de, active 1553-15691
- Rufina, Saint, -approximately 2871
- Russia1
- Rustam (Legendary character)1
- Rāfiʻī, ʻAbd al-Karīm ibn Muḥammad, 1162-1226. Muḥarrar1
- Rāma (Hindu deity)1
- SS. Annunziata (Church : Florence, Italy)1
- Sacchetti, Angiolo1
- Sacraments--Catholic Church1
- Sacred books1
- Saint-Geoire-en-Valdaine (France)1
- Sainte-Chapelle (Paris, France)1
- Sales (Islamic law)1
- Salt mines and mining1