- Siddur1
- Sin--Islam1
- Sirāj Allāh, Muḥammad, active 19th century. Sirāj-i anjan.--Daftar 21
- Skvira Hasidim1
- Sleep--Religious aspects--Islam1
- Smallpox--Vaccination1
- Soma (Hindu deity)1
- Soul--Islam--History of doctrines1
- Spandakārikā (Vasugupta)1
- Sphere1
- Spinoza, Benedictus de, 1632-16771
- Spring1
- Style manuals1
- Sufi literature1
- Sufi poetry, Persian1
- Sugrīva (Hindu mythology)1
- Sujāʻī, Aḥmad ibn Aḥmad, -1783? Jawāhir al-muntaẓimāt fi ʻUqūd al-maqūlāt1
- Sujāʻī, Aḥmad ibn Aḥmad, -1783? ʻUqūd al-maqūlāt1
- Sullam (Akhḍarī, ʻAbd al-Raḥmān ibn Muḥammad)1
- Sun1