- Sanūsī, Muḥammad ibn Yūsuf, approximately 1427-approximately 1490. ʻAqīdah al-ṣughrá1
- Satellites--Phases1
- Saʻīdī, Mīr Abū al-Fatḥ ibn Makhdūm, active 16th century. Ḥāshiyah ʻalá al-ʻAḍudīyah1
- Science, Medieval1
- Sharḥ Tahdhīb al-manṭiq (Dawwānī, Muḥammad ibn Asʻad)1
- Sharḥ al-Ishārāt (Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad)1
- Sharḥ al-Qūshjī ʻalá Tajrīd al-ʻaqāʼid lil-Ṭūsī (Qūshjī, ʻAlī ibn Muḥammad)1
- Sharḥ al-Wiqāyah (Maḥbūbī, ʻUbayd Allāh ibn Masʻūd)1
- Shaykhī1
- Shaykhī--Doctrines1
- Shihāb al-Dīn Aḥmad ibn Maḥmūd. Farāʼiḍ Shihāb al-Dīn1
- Shiites1
- Shirwānī, Masʻūd ibn Ḥusayn, -1499 or 1500. Sharḥ ʻalá Risālah fī ādāb al-baḥth1
- Shurūṭ al-ṣalāh1
- Shādhilīyah1
- Shāfiʻī, Muḥammad ibn Aḥmad, 1436 or 1437-1499 or 1500. Tuḥfat al-ʻibād bi-mā yajibu min al-iʻtiqād1
- Shīʻah1
- Shīʻah--Customs and practices1
- Sibṭ al-Māridīnī, Badr al-Dīn Muḥammad ibn Muḥammad, 1423- Sharḥ al-Raḥbīyah1
- Signification (Logic)1