- Radha (Hindu deity)3
- Risālah al-waḍʻīyah (Ījī, ʻAḍud al-Dīn ʻAbd al-Raḥmān ibn Aḥmad)3
- Rosh Hodesh3
- Salvation--Hinduism3
- Samarqandī, Muḥammad ibn Ashraf, active 13th century. Ashkāl al-taʼsīs3
- Sanskrit language--Etymology3
- Sanskrit language--Inflection3
- Sanskrit language--Semantics3
- Sarvajñātman. Śārīraprakaraṇasaṃkṣepaśārīraka3
- Saʻīdī, Mīr Abū al-Fatḥ ibn Makhdūm, 16th cent. ḥāshiyah ʻalá sharḥ al-Dawwānī3
- Science3
- Science, Medieval3
- Sefer ha-Mizraḥi (Mizraḥi, Elijah)3
- Sefirot (Cabala)3
- Sharḥ al-Ājurrūmīyah (Azharī, Khālid ibn ʻAbd Allāh)3
- Shavuot3
- Shaʻar ha-kaṿanot (Vital, Ḥayyim ben Joseph)3
- Shādhilī, Abū al-Ḥasan ʻAlī ibn ʻAbd Allāh, approximately 1196-1258. Ḥizb al-baḥr3
- Sick3
- Sinhalese language3