- Reincarnation--Hinduism1
- Religion and law1
- Religious minorities--Legal status, laws, etc.1
- Respiration--Religious aspects1
- Respiration--Religious aspects--Hinduism1
- Revenge1
- Risālah al-waḍʻīyah (Ījī, ʻAḍud al-Dīn ʻAbd al-Raḥmān ibn Aḥmad)1
- Risālah al-Ḥusaynīyah1
- Riyāḍ al-ṣāliḥīn (Nawawī)1
- Rodents--Religious aspects--Islam1
- Roosters1
- Rosh Hodesh--Liturgy1
- Royal houses1
- Rāma Daivajña, active 17th century. Muhūrtacintāmaṇi1
- Rāmizah fī ʻilmay al-ʻarūḍ wa-al-qāfiyah (Khazrajī, ʻAbd Allāh ibn ʻUthmān)1
- Rīzawī, ʻUthmān Ṣabrī ibn Ismāʻīl, active 19th century. Risālah al-jadīdah fī al-waḍʻ1
- Sacred works1
- Sacrifice1
- Sajāwandī, Sirāj al-Dīn Muḥammad ibn Muḥammad, active 12th century. Waqf wa-al-ibtidāʼ1
- Saladin, Sultan of Egypt and Syria, 1137-11931