- Radha (Hindu deity)1
- Ramiro II, King of Leon, -9511
- Rasas1
- Real property (Islamic law)1
- Religion and politics1
- Religions1
- Religious poetry, Syriac1
- Repentance--Islam1
- Repentance--Judaism1
- Ribbon work1
- Riddles1
- Riddles, Indic1
- Rifāʻīyah1
- Right of property (Islamic law)1
- Risālah (Ibn Abī Zayd al-Qayrawānī, ʻAbd Allāh ibn ʻAbd al-Raḥmān)1
- Risālah al-waḍʻīyah (Ījī, ʻAḍud al-Dīn ʻAbd al-Raḥmān ibn Aḥmad)1
- Risālah fī al-tawḥīd (Jaʻbarī, Arslān ibn Yaʻqūb)1
- Rituals1
- Riz̤ā-ʼi ʻAbbāsī, Āqā, approximately 1570-1635?1
- Roderick, King of the Visigoths, -711?1