Author
- Petrus Comestor2
- Pierre Bersuire2
- Pietro de' Crescenzi2
- Pius III2
- Porphyry2
- Pseudo-Phalaris2
- Qāsim ibn al-Faḍl2
- Rabanus Maurus2
- Regiomontanus2
- Richard Rolle2
- Robert Cooke2
- Robert Grosseteste2
- Sadr al-Din al-Qunawi2
- Safi Al-Din Al-Hilli Altaie2
- Samuel Gallico2
- Samuel ben Hofni2
- Sarvajñātman2
- Saʻd Allāh ibn ʻĪsá Saʻdī Chalabī2
- Shahab al-Din al-Hijazi2
- Shahidi Ibrahim Dede2