- Virgil1
- War (International law)1
- Waṣīyah (Abū Ḥanīfah)1
- Weather forecasting1
- Weights and measures1
- Wesel, Johann Ruchart von, approximately 1425-14811
- Wimpheling, Jakob, 1450-15281
- Wine and wine making--Law and legislation1
- Wine--Therapeutic use1
- Wit and humor, Medieval1
- Witchcraft1
- Women--Health and hygiene1
- Woodblock-printed papers1
- World maps1
- Yapp style bindings1
- Yom Kippur--Liturgy1
- Yose ben Yose, active 4th or 5th century1
- Yāsamīnīyah (Ibn al-Yāsamīn, ʻAbd Allāh ibn Ḥajjāj)1
- Zell, Ulrich, -15031
- Zeno, Carlo, 1334-14181