Author
- Paul III2
- Peter Damian2
- Pierre Bersuire2
- Pius III2
- Poggio Bracciolini2
- Porphyry2
- Pseudo-Phalaris2
- Qara Emre2
- Qasem-e Anvar2
- Qāsim ibn al-Faḍl2
- Rabanus Maurus2
- Rafīʻā, Muḥammad ibn Ḥaydar, 1588 or 1589-1670?2
- Raghib Isfahani2
- Rajab al-Bursi2
- Razi al-Din ibn al-Hanbali2
- Regiomontanus2
- Richard Rolle2
- Riyazi2
- Robert Cooke2
- Safi Al-Din Al-Hilli Altaie2