- Romanesque1
- Romans--Religion1
- Rome (Italy). Maestri delle Strade1
- Rosary1
- Royal supremacy (Church of England)1
- Rucellai, Cosimo, 1495-15191
- Ruch, Georgius, fl. 1438-14411
- Rupert, of Deutz, approximately 1075-11291
- Ruralia commoda (Crescenzi, Pietro de')1
- Sacramentaries1
- Saint-Martin de Plaimpied (Augustinian Monastery)1
- Saint-Victor (Abbey : Paris, France)1
- Sainte-Chapelle (Paris, France)1
- Saints--Biography1
- Salt industry and trade--Law and legislation1
- Salve Regina (Music)1
- Samson (Biblical judge)1
- Satire, Greek1
- Satirical literature1
- Scalandroni family1