Author
- Pomponius Mela1
- Porcellio1
- Priori (Florence)1
- Pseudo-Augustine1
- Pseudo-Bonaventure1
- Pseudo-Hegesippus1
- Pseudo-Joachim of Fiore1
- Publius Papinius Statius1
- Qaṣabī, Muḥammad ʻUmar1
- Qutb al-Din al-Shirazi1
- Ramon Llull1
- Ranulf Higden1
- Raymond of Penyafort1
- Raymond of Sabunde1
- Raymundus de Salgis1
- Regiomontanus1
- Richard Bolter1
- Richard Burdet1
- Richard II of England1
- Richard Nykke1