- Samarqandī, Muḥammad ibn Ashraf, active 13th century. Risālah fī ādāb al-baḥth2
- Sanūsī, Muḥammad ibn Yūsuf, approximately 1427-approximately 1490. Umm al-barāhīn2
- Satellites--Phases2
- Sharḥ Tahdhīb al-manṭiq (Dawwānī, Muḥammad ibn Asʻad)2
- Shaykhī--Doctrines2
- Shurūṭ al-ṣalāh2
- Shīʻah2
- Signification (Logic)2
- Sin--Islam2
- Suyūṭī, 1445-15052
- Symbolism2
- Taftāzānī, Masʻūd ibn ʻUmar, 1322-1389?2
- Taftāzānī, Masʻūd ibn ʻUmar, 1322-1389?. Sharḥ al-Shamsīyah2
- Taʻlīm al-mutaʻallim ṭarīq al-taʻallum (Zarnūjī, Burhān al-Dīn)2
- Tenth of Muḥarram2
- Turkey--Erzurum2
- compilation manuscripts2
- diagrams2
- illuminations (paintings)2
- magic squares2