Author
- Thomas of Celano1
- Thomas of Chobham1
- Thomas of Ireland1
- Tomasz II Zaremba1
- Tāj al-Millah wa-al-Dīn Kāshānī1
- Università de' mercanti (Siena)1
- Usuard1
- Valperga1
- Vincent of Beauvais1
- Walter Burley1
- Walter of Châtillon1
- Wang Xing1
- Wernigerode1
- William Bishop of Achaden1
- William Lee1
- William Normanton1
- William of Auxerre1
- William of Montlauzun1
- William of Ockham1
- William of Waddington1