Author
- Rabanus Maurus2
- Regiomontanus2
- Richard Rolle2
- Robert Cooke2
- Robert Grosseteste2
- Sadr al-Din al-Qunawi2
- Safi Al-Din Al-Hilli Altaie2
- Safi al-Din al-Urmawi2
- Samuel Gallico2
- Samuel ben Hofni2
- Sarvajñātman2
- Saʻd Allāh ibn ʻĪsá Saʻdī Chalabī2
- Seneca2
- Shahab al-Din al-Hijazi2
- Shahidi Ibrahim Dede2
- Shams al-Din al-Sakhawi2
- Shams-ud-Din Kermani2
- Sharaf ad-Din Ali Yazdi2
- Sharif Radhi2
- Sheikh Bedreddin2