Author
- Robert de Sorbon1
- Robert of Gloucester1
- Roman Catholic Archdiocese of Siena1
- Salomon ibn Parhon1
- Sarrazius de Bethencourt1
- Saʻīd Najm al-Dīn ʻAjamī1
- Seigneury de Brousses1
- Sharif Radhi1
- Sharif al-Murtadha1
- Shaykh Tabarsi1
- Shem Tov ben Abraham ibn Gaon1
- Shāfiʻ ibn ʻaly1
- Taftazani1
- Tengoccio d'Enea de Piccolomini1
- Titus Livius1
- Tāj al-Millah wa-al-Dīn Kāshānī1
- Università de' mercanti (Siena)1
- Valerius Maximus1
- Virgil1
- Walter Burley1