Author
- Sacro Regio Consiglio1
- Santa Maria in Portico a Fontegiusta1
- Sebastian Schindler1
- Senate of the Republic of Venice1
- Seneca1
- Serapion the Younger1
- Sextus the Pythagorean1
- Sigismund1
- Signoria of Florence1
- Sixtus IV1
- Society of Jesus1
- Society of Saint Anne (Malogoszcz, Poland)1
- Spanish Forger1
- Stefano d'Andrea1
- Stephanus Hugoneti1
- Suetonius1
- Sylvester II1
- Taddea Salamon1
- Tartaleoni family1
- Tengoccio d'Enea de Piccolomini1