- Regula (Benedict, Saint, Abbot of Monte Cassino)1
- Religious literature, Italian1
- Requesens, Antonio de'1
- Requesens, Berengario de'1
- Requesens, Bernardo de'1
- Requesens, Giuseppe de'1
- Ressano, Catterina1
- Ressano, Giovanni1
- Ricchi, Raphael Immanuel ben Abraham Ḥai, 1688-17431
- Ricciardi, Taddeo1
- Rites and ceremonies1
- Rithmomachia (Game)1
- Roman Civil War (Rome : 43-31 B.C.)1
- Romances, Italian1
- Rome (Italy). Maestri delle Strade1
- Rucellai, Cosimo, 1495-15191
- Sacraments--Catholic Church1
- Saints1
- Salt industry and trade--Law and legislation1
- Salt--Taxation1