Author
- Sextus the Pythagorean1
- Sidonius Apollinaris1
- Sigismund1
- Signoria of Florence1
- Simon Bredon1
- Simon de Lenis1
- Simon of Cremona1
- Simone di Nicolo Petroni1
- Society of Jesus1
- Society of Saint Anne (Malogoszcz, Poland)1
- Spain1
- Spanish Forger1
- Stefano Fieschi1
- Stefano d'Andrea1
- Stephan Brechtel1
- Stephanus Hugoneti1
- Stephen Batman1
- Stephen Langton1
- Sylvester II1
- Taddea Salamon1