- Sajāwandī, Sirāj al-Dīn Muḥammad ibn Muḥammad, active 12th century. Waqf wa-al-ibtidāʼ1
- Salat1
- Samarqandī, Abū al-Qāsim ibn Abī Bakr, active 15th century. Risālah al-Samarqandīyah fī al-istiʻārāt1
- Samarqandī, Muḥammad ibn Maḥmūd. Sharḥ al-Qaṣīdah al-fāʼiḥah fī tajwīd al-Fātiḥah1
- Sanskrit literature1
- Sanūsī, Muḥammad ibn Yūsuf, approximately 1427-approximately 1490. Umm al-barāhīn1
- Saudi Arabia--Badr Ḥunayn1
- Saudi Arabia--Mecca1
- Sayyidah Nafīsah, 762 or 763-823 or 8241
- Seeds--Religious aspects1
- Sex--Religious aspects--Islam1
- Shaykhī1
- Shaʻbān1
- Shiites1
- Shādhilī, Abū al-Ḥasan ʻAlī ibn ʻAbd Allāh, approximately 1196-1258. Ḥizb al-baḥr1
- Shādhilīyah1
- Shīʻah1
- Shīʻah--Customs and practices1
- Sin--Islam1
- Siva (Hindu deity)1