Author
- Ralph of Longchamp1
- Ramon Llull1
- Ranulf Higden1
- Raymond of Penyafort1
- Remigius of Auxerre1
- René of Anjou1
- Richard Carmarden1
- Richard Robinson1
- Richard Rolle1
- Richard de Fournival1
- Ro. Ba1
- Robert Cooke1
- Robert Fabyan1
- Roger Alban1
- Rudulphus Bollartus1
- Rui de Pina1
- Rupert, Count Palatine of Simmern1
- Rutgerus Hartman1
- Rutilius Taurus Aemilianus Palladius1
- Samuel Marochitanus1