- Qazwīnī, ʻAlī ibn ʻUmar, 1203 or 1204-1276 or 1277. Risālah al-Shamsīyah fī al-qawāʻid al-manṭiqīyah2
- Quadrants (Astronomical instruments)2
- Quṭb al-Taḥtānī, Muḥammad ibn Muḥammad, 1294 or 1295-1364 or 1365. Lawāmiʻ al-asrār fī sharḥ Maṭāliʻ al-anwār2
- Samarqandī, Abū al-Qāsim ibn Abī Bakr, active 15th century. Risālah al-Samarqandīyah2
- Sanskrit language--Etymology2
- Sanūsī, Muḥammad ibn Yūsuf, approximately 1427-approximately 1490. Mukhtaṣar fī al-manṭiq2
- Sharḥ Tahdhīb al-manṭiq (Dawwānī, Muḥammad ibn Asʻad)2
- Sharḥ Īsāghūjī (Kātī, Ḥusām al-Dīn al-Ḥasan)2
- Shīʻah--Doctrines2
- Sullam (Akhḍarī, ʻAbd al-Raḥmān ibn Muḥammad)2
- Taftāzānī, Masʻūd ibn ʻUmar, 1322-1389?. Sharḥ al-Shamsīyah2
- Texts2
- Theology2
- Thirteenth century2
- Viśvanātha Nyāyapañcānana Bhaṭṭācārya. Siddhāntamuktāvalī2
- drawings (visual works)2
- headpieces (layout features)2
- magic squares2
- manuscripts (documents)2
- tables (documents)2