- Requesens, Berengario de'1
- Requesens, Bernardo de'1
- Requesens, Giuseppe de'1
- Ressano, Catterina1
- Ressano, Giovanni1
- Riddles, Arabic1
- Riddles, Persian1
- Right of property (Islamic law)1
- Risālah (Ibn Abī Zayd al-Qayrawānī, ʻAbd Allāh ibn ʻAbd al-Raḥmān)1
- Riz̤ā-ʼi ʻAbbāsī, Āqā, approximately 1570-1635?1
- Roderick, King of the Visigoths, -711?1
- Romances1
- Rome (Empire)1
- Romera, Carlo1
- Rüstem Paşa Camii (Istanbul, Turkey)1
- Rāgamālā painting1
- Rūmī, ʻAbd Allāh ibn ʻAbd Allāh, d. 15791
- Salviati, Jacopo1
- Samaritans1
- Samarqandī, Abū al-Qāsim ibn Abī Bakr, 15th cent. Risālah al-Samarqandīyah1