- Rainbows1
- Rajab2
- Ramadan2
- Ramlī, Aḥmad ibn Aḥmad, -1563 or 1564. Shurūṭ al-maʼmūm wa-al-imām1
- Rasāʼil (Ikhwān al-Ṣafāʼ)1
- Recitations14
- Religious life1
- Religious life--Islam25
- Resurrection (Islam)3
- Riddles, Persian2
- Rifāʻī, Aḥmad ibn ʻAlī, 1106?-11821
- Rifāʻīyah1
- Russia (Federation)--Saint Petersburg1
- Salat2
- Sales (Islamic law)1
- Samarqandī, Abū al-Qāsim ibn Abī Bakr, active 15th century. Risālah al-Samarqandīyah fī al-istiʻārāt1
- Samarqandī, Muḥammad ibn Ashraf, active 13th century. Risālah fī ādāb al-baḥth2
- Sanūsī, Muḥammad ibn Yūsuf, approximately 1427-approximately 1490. Umm al-barāhīn1
- Satellites--Phases1
- Saudi Arabia--Mecca4