- Shīʻah1
- Sibṭ al-Māridīnī, Badr al-Dīn Muḥammad ibn Muḥammad, 1423- Risālah fī bayān al-ʻamal bi-al-ālah allatī tusammá bi-al-Rubʻ al-mujayyab1
- Siva (Hindu deity)1
- Smoking (Islamic law)1
- Snakes--Religious aspects--Hinduism1
- Sphaera mundi (Sacro Bosco, Joannes de)1
- Spices1
- Spring1
- Sprinkled papers1
- Sufis1
- Sufism--Doctrines1
- Sullam (Akhḍarī, ʻAbd al-Raḥmān ibn Muḥammad)1
- Suyūṭī, 1445-1505. Itmām al-dirāyah sharḥ al-Nuqāyah1
- Söilemzādeh, ʻAbd al-Ḥalīm. Bahjat al-albāb fī ʻilm al-usturlāb1
- Tajrīd al-iʻtiqād (Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad)1
- Talkhīṣ Miftāḥ al-ʻulūm (Qazwīnī, Jalāl al-Dīn Muḥammad ibn ʻAbd al-Raḥmān)1
- Talkhīṣ aʻmāl al-ḥisāb (Ibn al-Bannāʼ, Aḥmad ibn Muḥammad)1
- Technology1
- Texts1
- Theoricae novae planetarum (Peurbach, Georg von)1