- Ricciardi, Taddeo1
- Riddles, Persian2
- Right of property (Jewish law)1
- Ripley, George, -1490?1
- Risaliti, Francesco6
- Rochefort Demoulin, Louis1
- Roderick, King of the Visigoths, -711?1
- Romances, Spanish1
- Rome (Empire)2
- Romera, Carlo1
- Rosh Hodesh4
- Rossi, Azariah ben Moses dei, approximately 1511-approximately 1578. Tsedeḳ ʻOlamim1
- Rossi, Giovanni de'1
- Rossi, Girolamo de'1
- 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