- Bassāmat ahl al-bayt (Wazīrī, Ibrāhīm ibn Muḥammad)1
- Batignano, Carlo Gasparie di1
- Batini, Andreas1
- Battle Abbey1
- Battle of Agincourt (Agincourt, France : 1415)1
- Battle of Covadonga (Covadonga, Spain : 718)1
- Bayezid II, Sultan of the Turks, 1447 or 1448-15121
- Bayḍāwī, ʻAbd Allāh ibn ʻUmar, d. 1286? Lubb al-albāb1
- Baʻal Shem Ṭov, approximately 1700-17601
- Baṭāʼiḥī, Manṣūr ibn Mūsá, -12931
- Beeleye, John de1
- Beeleye, Margery de1
- Beheading1
- Belarus--Vaŭkavysk1
- Belgium--Liège1
- Bello family1
- Belvis family1
- Bembo, Lorenzo1
- Ben Yijû, Abraham, active 12th century1
- Benavides family1