- Rasāʼil (Ikhwān al-Ṣafāʼ)1
- Reading1
- Religions1
- Remboîtage1
- Risālah al-waḍʻīyah (Ījī, ʻAḍud al-Dīn ʻAbd al-Raḥmān ibn Aḥmad)1
- Rāfiʻī, ʻAbd al-Karīm ibn Muḥammad, 1162-1226. Muḥarrar1
- Sales (Islamic law)1
- Samarqandī, Abū al-Qāsim ibn Abī Bakr, active 15th century. Risālah al-Samarqandīyah fī al-istiʻārāt1
- Samarqandī, Muḥammad ibn Ashraf, active 13th century. Risālah fī ādāb al-baḥth1
- Samarqandī, Muḥammad ibn Maḥmūd. Sharḥ al-Qaṣīdah al-fāʼiḥah fī tajwīd al-Fātiḥah1
- Satellites--Phases1
- Saudi Arabia--Hejaz1
- Science, Medieval1
- Senses and sensation1
- Sex--Religious aspects1
- Shahīd al-Awwal, Muḥammad ibn Makkī, 1333 or 1334-1380. Risālah al-naflīyah1
- Shahīd al-Thānī, Zayn al-Dīn ibn ʻAlī, 1506-1559. Riʻāyah fī ʻilm al-dirāyah1
- Sharāʼiʻ al-Islām (Muḥaqqiq al-Ḥillī, Jaʻfar ibn al-Ḥasan)1
- Sharḥ al-ʻAqāʼid al-ʻAḍudīyah (Dawwānī, Muḥammad ibn Asʻad)1
- Sharḥ Īsāghūjī (Kātī, Ḥusām al-Dīn al-Ḥasan)1