Author
- William Lambarde1
- William Rothwell1
- William of Auxerre1
- William of Conches1
- William of Nangis1
- William of Ockham1
- William of Paris1
- William of Tyre1
- William of Waddington1
- Wolf Michel1
- Xenophon1
- Ya'qub al-Jarkhi1
- Yaakov de Castro1
- Yakov Sikily1
- Yazıcıoğlu Mehmet1
- Yaʻaḳov Samut1
- Yaʻaḳov ben Shelomoh Sukari1
- Yaʻaḳov ben Yeḳutiel Ḳofmann1
- Yaʻaḳov ben Ḳalonimus Segal1
- Yaʻqūb ibn Muḥammad Ṭāʼūsī1