Author
- Shem Tov ben Abraham ibn Gaon1
- Shlomo ben Aderet1
- Shnorhali Sargis1
- Shāfiʻ ibn ʻaly1
- Simon de Lenis1
- Stephanus Hugoneti1
- Taddeo Alderotti1
- Taj al-Din al-Subki1
- Thomas of Celano1
- Thomas of Chobham1
- Thomas of Ireland1
- Tomasz II Zaremba1
- Usuard1
- Valperga1
- Vincent of Beauvais1
- Walter Burley1
- Walter Hilton1
- Walter of Châtillon1
- Wang Xing1
- William Lee1