Author
- Robert of Gloucester1
- Roman Catholic Archdiocese of Siena1
- Saadia Gaon1
- Sarrazius de Bethencourt1
- Seigneury de Brousses1
- Sharif al-Murtadha1
- Shaykh Tabarsi1
- Shāfiʻ ibn ʻaly1
- Sibt al-Maridini1
- Taftāzānī, Masʻūd ibn ʻUmar, 1322-1389?1
- Taj al-Din al-Subki1
- Tengoccio d'Enea de Piccolomini1
- Titus Livius1
- Università de' mercanti (Siena)1
- Uthman bin Ali Zayla'i1
- Valerius Maximus1
- Virgil1
- Walter Burley1
- William Brito1
- William of Ockham1