- Resurrection (Islam)1
- Revelation on Sinai1
- Riddles, Arabic2
- Riddles, Persian2
- Rifāʻī, Aḥmad ibn ʻAlī, 1106?-11822
- Risālah al-waḍʻīyah (Ījī, ʻAḍud al-Dīn ʻAbd al-Raḥmān ibn Aḥmad)2
- Roman Civil War (Rome : 43-31 B.C.)1
- Roman Civil War (Rome : 49-45 B.C.)2
- Romances2
- Rome (Empire)11
- Royal houses2
- Rustam (Legendary character)1
- Rāghib, Muḥammad, 1698 or 1699-1762 or 17631
- Rāma (Hindu deity)2
- Rāmizah fī ʻilmay al-ʻarūḍ wa-al-qāfiyah (Khazrajī, ʻAbd Allāh ibn ʻUthmān)1
- Rāmāyaṇa (Vālmīki)1
- Salat2
- Salutations--Religious aspects--Islam1
- Salvation1
- Samtī, Yūsuf ibn Khālid, -805 or 8061