- Samarqandī, Muḥammad ibn Ashraf, active 13th century. Ashkāl al-taʼsīs1
- Sanchez de Bustamente, Luis1
- Sanchipat1
- Sancho Garcés I, King of Navarre, -9251
- Sancho II, King of Castile and Leon, 1037 or 1038-10721
- Saudi Arabia--Hejaz1
- Saudi Arabia--Mecca1
- Saudi Arabia--Medina1
- Savelli, Troilo, -15921
- Saʻdīyah1
- Science1
- Seals1
- Seint Andreu, Roger de1
- Selim II, Sultan of the Turks, 1524-15741
- Sententiarum libri IV (Peter Lombard, Bishop of Paris)1
- Serfdom1
- Sermon on the mount1
- Seven (The number)1
- Sexual ethics--Religious aspects1
- Shan (Asian people)1