Author
- Raginaldus Collus Rubeus1
- Ralph of Longchamp1
- Ramon Llull1
- Ranieri Farnese1
- Ranuccio Farnese1
- Ranulf Higden1
- Rapolano Terme1
- Raymond of Sabunde1
- Regia Camera (Duchy of Milan)1
- Remigio dei Girolami1
- Remigius of Auxerre1
- Renchius, Henricus1
- Ressani family1
- Reynoldus Romanus1
- Ricardus, de Mediavilla, approximately 1249-1308?1
- Richard Bolter1
- Richard Burdet1
- Richard II of England1
- Richard Nykke1
- Richard Ward1