- Qiblah1
- Quadrants (Astronomical instruments)1
- Religious life1
- Samarqandī, Abū al-Qāsim ibn Abī Bakr, active 15th century. Risālah al-Samarqandīyah fī al-istiʻārāt1
- Satellites--Phases1
- Saʻīdī, Mīr Abū al-Fatḥ ibn Makhdūm, active 16th century. Ḥāshiyah ʻalá al-ʻAḍudīyah1
- Sharḥ al-Wiqāyah (Maḥbūbī, ʻUbayd Allāh ibn Masʻūd)1
- Sharḥ al-ʻAqāʼid al-ʻAḍudīyah (Dawwānī, Muḥammad ibn Asʻad)1
- Sibṭ al-Māridīnī, Badr al-Dīn Muḥammad ibn Muḥammad, 1423- Risālah al-fatḥīyah1
- Stamps1
- Sufis1
- Sufism--Doctrines1
- Söilemzādeh, ʻAbd al-Ḥalīm. Bahjat al-albāb fī ʻilm al-usturlāb1
- Terminology1
- Time measurements1
- Time perspective1
- Turkey--Istanbul1
- Uzbakī, Muḥammad Murād, -1729. Silsilat al-dhahab1
- Warships1
- poetry1