- Worcester, Charles Somerset, Earl of, approximately 1460-15261
- Worcester, William Somerset, Earl of, approximately 1525-15891
- Word of God (Islam)1
- World history1
- World maps7
- World maps, Manuscript1
- Wound healing1
- Wounds and injuries--Treatment1
- Wrappers1
- Writing4
- Writing books11
- Ximena family1
- Ximenes de Ençiso family1
- Ximenez de Angulo, Juan1
- Yalkut Shimoni1
- Yapp style bindings3
- Yaʻqūb ibn Khiḍr, d. 1480. ḥāshiyah ʻalá sharḥ Ṣadr al-Sharīʻah1
- Yemen (Republic)1
- Yeshivas1
- Yāsamīnīyah (Ibn al-Yāsamīn, ʻAbd Allāh ibn Ḥajjāj)1