- Sveti Nikola (Abbey : Šibenik, Croatia)1
- Switzerland--Basel-Landschaft (Canton)1
- Switzerland--Lucerne1
- Symbolism of numbers1
- Süleyman I, Sultan of the Turks, 1494 or 1495-15661
- Tabernacle1
- Tacketed bindings1
- Talbot, Gilbert, Sir, of Grafton1
- Talismans1
- Talkhīṣ aʻmāl al-ḥisāb (Ibn al-Bannāʼ, Aḥmad ibn Muḥammad)1
- Taxation, Papal1
- Technology1
- Temple of Jerusalem (Jerusalem)1
- Terence1
- Testamentum (Francis, of Assisi, Saint)1
- Teutonic Knights1
- Theoricae novae planetarum (Peurbach, Georg von)1
- Thirteenth century1
- Thomas, Aquinas, Saint, 1225?-12741
- Tibullus1