- Requesens, Antonio de'1
- Requesens, Berengario de'1
- Requesens, Bernardo de'1
- Requesens, Giuseppe de'1
- Ressano, Catterina1
- Ressano, Giovanni1
- Resurrection1
- Resurrection of Jesus Christ1
- Rhetoric, Ancient--Study and teaching1
- Rhetoric, Medieval1
- Ricchi, Raphael Immanuel ben Abraham Ḥai, 1688-17431
- Ricciardi, Taddeo1
- Riddles, Arabic1
- Rites and ceremonies1
- Rithmomachia (Game)1
- Rodriguez, Ysabel1
- Rodríguez, Sebastián, 1896-19681
- Roman Civil War (Rome : 43-31 B.C.)1
- Romances, Italian1
- Romans--Religion1