- Qurʼan. Sūrat Ṭāhā2
- Qādirīyah2
- Qūshjī, ʻAlī ibn Muḥammad, -1474 or 1475. Sharḥ al-Waḍʻīyah2
- Relations2
- Rāzī, Fakhr al-Dīn Muḥammad ibn ʻUmar, 1149 or 1150-1210. Lubāb al-Ishārāt2
- Sales (Islamic law)2
- 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
- Sufism--Customs and practices2
- Sufism--Rituals2
- Sunnites2
- Suyūṭī, 1445-15052
- Symbolism2