- Trivia and miscellanea1
- Turkey1
- Twelfth century7
- Umm al-barāhīn fī ʻilm al-kalām (Sanūsī, Muḥammad ibn Yūsuf)1
- Urjūzah al-Raḥbīyah (Ibn al-Mutafanninah, Muḥammad ibn ʻAlī)1
- Wahhābīyah1
- Waqf1
- Watermarks4
- Wills, Ethical3
- Women1
- Yazīd I, Caliph, approximately 642-6831
- autographs (manuscripts)1
- dictionaries1
- headpieces (layout features)2
- holographs (autographs)5
- illuminated manuscripts2
- poetry1
- Ījī, ʻAḍud al-Dīn ʻAbd al-Raḥmān ibn Aḥmad, -1355. Sharḥ Mukhtaṣar al-Muntahá fī al-uṣūl1
- ʻAlī al-Riḍā ibn Mūsá, -818 or 8191
- ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-6612