- Qārī al-Harawī, ʻAlī ibn Sulṭān Muḥammad, -1605 or 1606. Arbaʻūn ḥadīth1
- Qūshjī, ʻAlī ibn Muḥammad, -1474 or 1475. Sharḥ al-Waḍʻīyah1
- Rabanus Maurus, Archbishop of Mainz, 784?-8561
- Rabbinical literature1
- Rainbows1
- Rajab2
- Ramadan3
- Ramlī, Aḥmad ibn Aḥmad, -1563 or 1564. Shurūṭ al-maʼmūm wa-al-imām1
- Rashi, 1040-11051
- Recitations11
- Reform Judaism1
- Regula (Augustine, of Hippo, Saint)2
- Regula (Benedict, Saint, Abbot of Monte Cassino)1
- Relics18
- Religious disputations1
- Religious life1
- Religious life--Islam6
- Religious poetry, Latin1
- Rerum rusticarum libri tres (Varro, Marcus Terentius)1
- Responsa13