- Repentance--Islam1
- Reproduction1
- Riddles1
- Rifāʻīyah1
- Right of property (Islamic law)1
- Risālah (Ibn Abī Zayd al-Qayrawānī, ʻAbd Allāh ibn ʻAbd al-Raḥmān)1
- Risālah al-Ḥusaynīyah1
- Rituals1
- Rodents--Religious aspects--Islam1
- Romances1
- Romances, Arabic1
- Rome (Empire)1
- Ruhāwī, Ḥusām al-Dīn, 14th cent. ʻUqūd al-jawāhir wa-durar al-mafākhir1
- Russia (Federation)--Tarki1
- Rüstem Paşa Camii (Istanbul, Turkey)1
- Rāfiʻī, ʻAbd al-Karīm ibn Muḥammad, 1162-1226. Muḥarrar1
- Rāgamālā painting1
- Rāma (Hindu deity)1
- Rīzawī, ʻUthmān Ṣabrī ibn Ismāʻīl, active 19th century. Risālah al-jadīdah fī al-waḍʻ1
- Rūmī, ʻAbd Allāh ibn ʻAbd Allāh, d. 15791