- Sharḥ dībājat al-Miṣbāḥ1
- Shīrāzī, Shukr Allāh ibn Qāsim. Mufīd al-Mukhtaṣar1
- Shīʻah--Prayers and devotions1
- Shīʻah--Rituals1
- Sin--Islam1
- Sirāj Allāh, Muḥammad, active 19th century. Sirāj-i anjan.--Daftar 11
- Siwāsī, Muṣṭafá ibn Abī Bakr, d. 1824 or 5. Mafātīḥ al-durrīyah fī ithbāt al-qawānīn al-Darīyah1
- Smallpox--Vaccination1
- Songs, Turkish1
- Spices1
- Sufi literature1
- Sufi poetry, Persian1
- Sufism--Customs and practices1
- Sufism--Terminology1
- Sundials1
- Symbolism of numbers1
- Syriac language1
- Sājaqlīzādah, Muḥammad ibn Abī Bakr, -1737. Risālah fī fann al-munāẓarah1
- Tables (Data)1
- Tadhkirah fī ʻilm al-hayʼah (Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad)1