- Rossi, Azariah ben Moses dei, approximately 1511-approximately 1578. Tsedeḳ ʻOlamim1
- Royal supremacy (Church of England)1
- Rucellai, Cosimo, 1495-15191
- Rucellai, Guglielmo de'1
- Rufina, Saint, -approximately 2871
- Rupert, of Deutz, approximately 1075-11291
- Ruralia commoda (Crescenzi, Pietro de')1
- Russia (Federation)--Saint Petersburg1
- Russia leather bindings1
- Rustam, Amir-zadeh, Sultan1
- Rüstem Paşa Camii (Istanbul, Turkey)1
- Rāfiʻī, ʻAbd al-Karīm ibn Muḥammad, 1162-1226. Muḥarrar1
- Rāgamālā painting1
- Rāghib, Muḥammad, 1698 or 1699-1762 or 17631
- Rāzī, Fakhr al-Dīn Muḥammad ibn ʻUmar, 1149 or 1150-1210. Lubāb al-Ishārāt1
- Rīzawī, ʻUthmān Ṣabrī ibn Ismāʻīl, active 19th century. Risālah al-jadīdah fī al-waḍʻ1
- Rūmī, ʻAbd Allāh ibn ʻAbd Allāh, d. 15791
- Sabbath (Jewish law)1
- Sabbath--Liturgy1
- Sabzavārī, Hādī ibn Mahdī, b. 1797 or 8. Tālīqāt ʻalá Asrār al-āyāt1