Author
- Prosdocimus de Beldemandis1
- Pseudo-Dionysius the Areopagite1
- Quintus Curtius Rufus1
- Rabanus Maurus1
- Ralph of Longchamp1
- Ramon Llull1
- Ranulf Higden1
- Raymond of Penyafort1
- Remigius of Auxerre1
- René of Anjou1
- Republic of Venice1
- Richard Rolle1
- Richard de Fournival1
- Rupert, Count Palatine of Simmern1
- Rutgerus Hartman1
- Rutilius Taurus Aemilianus Palladius1
- Samuel Marochitanus1
- Sancho IV of León and Castile1
- Seneca1
- Sidrac1