Author
- Roman Catholic Archdiocese of Siena1
- Saadia Gaon1
- Sarrazius de Bethencourt1
- Saʻīd ibn Hibat Allāh ibn al-Ḥusayn1
- Sebastian Schindler1
- Seigneury de Brousses1
- Seneca1
- Serapion the Younger1
- Siena1
- Stephanus Hugoneti1
- Sylvester II1
- Taddeo Alderotti1
- Theobaldus Episcopus1
- Thiebaus de Maliers1
- Thomas Brooke1
- Thomas of Cantimpré1
- Thomas of Capua1
- Wernigerode1
- William Bonyngton1
- William Brito1