Author
- William de Brailes1
- William of Auvergne1
- William of Nangis1
- William of Ockham1
- William of Paris1
- William of Saliceto1
- William of St-Thierry1
- William of Tyre1
- William of Waddington1
- Wolf Michel1
- Wu Chen1
- Wu Yan1
- Xia Liangsheng1
- Xiao Qi1
- Xie Su1
- Xu Zhongxing1
- Ya'qub al-Jarkhi1
- Yaakov de Castro1
- Yahya Saleh1
- Yajnavalkya1