- Aveiro, Gabriel de Lencastre, Duque de, 1667-17451
- Awḍaḥ al-masālik ilá Alfīyat Ibn Mālik (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)1
- Ayyubids1
- Bakers1
- Bartoli, Dianora1
- Bartoli, Giannozzo1
- Bartolomeo, da Petroio, 1488?-15541
- Basil, Saint, Bishop of Caesarea, approximately 329-3791
- Basilica di S. Marco Evangelista al Campidoglio (Rome, Italy)1
- Basmalah1
- Batini, Andreas1
- Battle Abbey1
- Battle of Agincourt (Agincourt, France : 1415)1
- Bayezid II, Sultan of the Turks, 1447 or 1448-15121
- Baʻal Shem Ṭov, approximately 1700-17601
- Belarus--Vaŭkavysk1
- Belgium--Liège1
- Ben Yijû, Abraham, active 12th century1
- Benedictine nuns1
- Benedictines1