Author
- Qutb al-Din al-Shirazi1
- Qāḍī Zāda al-Rūmī1
- Raimondo Marliani1
- Ramon Llull1
- Ranulf Higden1
- Rashid-al-Din Hamadani1
- Raymundus de Salgis1
- Regiomontanus1
- Remigio dei Girolami1
- Reynoldus Romanus1
- Richard II of England1
- Richard Nykke1
- Richard of Middleton1
- Robert de Saint-Martin1
- Roberto Caracciolo1
- Rocca, Antonio1
- Roger Waltham1
- Rozanes, Yosef, 15th century1
- Rutilius Taurus Aemilianus Palladius1
- Ruzbihan Baqli1