- Rhetoric, Medieval1
- Rhetoric--Study and teaching1
- Rhetorica ad Herennium1
- Riccomanni, Jacopo1
- Riccomanni, Maria1
- Riccomanni, Simone1
- Right of property (Jewish law)1
- Rites and ceremonies in the Bible1
- Rituals1
- Robert, King of Naples, approximately 1275-13431
- Roman Civil War (Rome : 43-31 B.C.)1
- Roman law--Interpretation and construction1
- Rosselmini, Giovanni1
- Rosselmini, Gregorio Tommaso1
- Ruch, Georgius, fl. 1438-14411
- Rules1
- Rāfiʻī, ʻAbd al-Karīm ibn Muḥammad, 1162-1226. ʻAzīz ʻalá al-Wajīz1
- Sacraments1
- Sacred music1
- Saints--Cult1