- Right of property (Islamic law)1
- Right of property (Jewish law)2
- Ripley, George, -1490?1
- Risaliti, Francesco6
- Risaliti, Lena1
- Rishis6
- 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)6
- Risālah al-Ḥusaynīyah1
- Risālah fī al-tawḥīd (Jaʻbarī, Arslān ibn Yaʻqūb)2
- Rites and ceremonies719
- Rites and ceremonies in the Bible1
- Rithmomachia (Game)1
- Rituals6
- Rituals (Liturgical books)1
- Rivers2
- Rivers--Religious aspects--Hinduism7
- Riyāḍ al-ṣāliḥīn (Nawawī)4
- Riz̤ā-ʼi ʻAbbāsī, Āqā, approximately 1570-1635?1
- Robert, King of Naples, approximately 1275-13431