- Resurrection (Islam)5
- Riddles, Arabic1
- Riddles, Persian1
- Risālah al-waḍʻīyah (Ījī, ʻAḍud al-Dīn ʻAbd al-Raḥmān ibn Aḥmad)2
- Riyāḍ al-ṣāliḥīn (Nawawī)4
- Romaniots10
- Rosh Hodesh1
- Rosh ha-Shanah2
- Rosh ha-Shanah--Liturgy1
- Rules3
- Rupert, of Deutz, approximately 1075-11291
- Rāmizah fī ʻilmay al-ʻarūḍ wa-al-qāfiyah (Khazrajī, ʻAbd Allāh ibn ʻUthmān)1
- Sabbath2
- Sabbathaians2
- Sabzavārī, Hādī ibn Mahdī, 1797 or 1798- Nibrās al-hudá1
- Sacred works4
- Sakhāwī, ʻAlī ibn Muḥammad, 1163?-1245. ʻUmdat al-mujīd fī al-naẓm wa-al-tajwīd1
- Salat3
- Sales (Islamic law)1
- Salvation1