- Bracciolini, Poggio, 1380-14591
- Bracciolini, Poggio, 1380-1459. Correspondence1
- Bread--Religious aspects1
- Breviary (Catholic Church)1
- Bridget, of Sweden, Saint, approximately 1303-13731
- Brocade bindings1
- Brudenell family1
- Bucolica (Virgil)1
- Buddhism--Manuscripts1
- Buddhist literature, Pali1
- Buddhist monks1
- Buffoni, Baldello1
- Buhūtī, Manṣūr ibn Yūnus, d. 1641. Dalīl al-ṭālib li-nayl al-maṭālib1
- Building laws (Islamic law)1
- Buildings1
- Bulgaria1
- Bulgaria--Plovdiv1
- Bulgaria--Sofia1
- Bulqīnī, ʻUmar ibn Raslān, 1324-14031
- Buonamici, Giovanni Francesco1