- 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
- Sibṭ al-Māridīnī, Badr al-Dīn Muḥammad ibn Muḥammad, 1423- Sharḥ al-Raḥbīyah1
- Siddhāntalakṣaṇa (Gaṅgeśa)1
- Siddur (Yemen)1
- Siddur. Sabbath1
- Siege of Acre (Acre, Israel : 1799)1
- Sieges1
- Sigismund II Augustus, King of Poland, 1520-15721
- Signed bindings1
- Sikh gurus1
- Sikhism1
- Silence--Religious aspects1
- Silence--Religious aspects--Islam1
- Silva, Juan de, Conde de Cifuentes1
- Simeon bar Yoḥai, active 2nd century1
- Simile1
- Simon, de Cremona, -13901
- Simony1
- Sin1
- Sin--Christianity1