- Predestination (Islam)1
- Quṭb al-Shīrāzī, Maḥmūd ibn Masʻūd, 1236 or 1237-1310 or 1311. Sharḥ Ḥikmat al-ishrāq1
- Qāḍī Mīr, Ḥusayn ibn Muʻīn al-Dīn, -1504 or 1505. Sharḥ Hidāyat al-ḥikmah2
- Qāḍī Mīr, Ḥusayn ibn Muʻīn al-Dīn, -1504 or 1505. Sharḥ al-Hidāyah12
- Qāḍī Mīr, Ḥusayn ibn Muʻīn al-Dīn, d. 1504 or 5. Sharḥ al-Hidāyah6
- Qūshjī, ʻAlī ibn Muḥammad, -1474 or 1475. Sharḥ al-jadīd ʻalá Tajrīd al-ʻaqāʼid2
- Rainbows1
- Religious life--Islam1
- Rudra (Hindu deity)1
- Rāma (Hindu deity)1
- Rāzī, Fakhr al-Dīn Muḥammad ibn ʻUmar, 1149 or 1150-1210. Lubāb al-Ishārāt2
- Salvation--Hinduism2
- 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-baḥth1
- Sankhya3
- Sanskrit language3
- Satellites--Phases1
- Self (Philosophy)8
- Seventeenth century37
- Shamsīyah (Qazwīnī, ʻAlī ibn ʻUmar)1