- Spurious and doubtful works1
- St. Jakob (Church : Regensburg, Germany)1
- Stencilled initials1
- Stoics1
- Storytelling1
- Strozzi, Nanni, 1376-14271
- Sundials1
- Surgery1
- Surgical instruments and apparatus1
- 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
- Tacketed bindings1
- Talbot, Gilbert, Sir, of Grafton1
- Talismans1
- Talkhīṣ aʻmāl al-ḥisāb (Ibn al-Bannāʼ, Aḥmad ibn Muḥammad)1
- Taxation, Papal1
- Technology1