Author
- Pseudo-Dionysius the Areopagite1
- Pseudo-Joachim of Fiore1
- Pseudo-Phalaris1
- Quintus Curtius Rufus1
- Raymond of Penyafort1
- René of Anjou1
- Richard II of England1
- Richard Rolle1
- Richard de Fournival1
- Roberto Caracciolo1
- Rupert, Count Palatine of Simmern1
- Rutgerus Hartman1
- Rutilius Taurus Aemilianus Palladius1
- Samuel Marochitanus1
- Sextus the Pythagorean1
- Simon Bredon1
- Simone d' Angelo1
- Sixtus IV1
- Urban V1
- Usuard1