Author
- Pseudo-Hegesippus1
- Pseudo-Jerome1
- Pseudo-Joachim of Fiore1
- Publius Papinius Statius1
- Raimondo Marliani1
- Ramon Llull1
- Ranulf Higden1
- Rapolano Terme1
- Raymond of Sabunde1
- Raymundus de Salgis1
- Regiomontanus1
- Remigio dei Girolami1
- Reynoldus Romanus1
- Richard Bolter1
- Richard Burdet1
- Richard II of England1
- Richard Nykke1
- Richard Treby1
- Richard de Fournival1
- Richard of Middleton1