- Rithmomachia (Game)1
- Rochefort Demoulin, Louis1
- Roger, of St. Albans1
- Roman Civil War (Rome : 43-31 B.C.)1
- Romances, Turkish1
- Romans--Religion1
- Rome (Italy). Maestri delle Strade1
- Rossi, Azariah ben Moses dei, approximately 1511-approximately 1578. Tsedeḳ ʻOlamim1
- Royal supremacy (Church of England)1
- Rucellai, Cosimo, 1495-15191
- Russia1
- Rustam (Legendary character)1
- Rāma (Hindu deity)1
- Sacred books1
- Saint-Geoire-en-Valdaine (France)1
- Sainte-Chapelle (Paris, France)1
- Sales (Islamic law)1
- Salt industry and trade--Law and legislation1
- Samaritans1
- Samarqandī, Abū al-Qāsim ibn Abī Bakr, active 15th century. Risālah al-Samarqandīyah fī al-istiʻārāt1