- Bible. Ruth1
- Birmāwī, Muḥammad ibn ʻAbd al-Dāʼim, 1362-1428. Nubdhah al-alfīyah fī al-uṣūl al-fiqhīyah1
- Bishops1
- Bishops--Temporal power1
- Blaise, Saint, -approximately 3161
- Blessed1
- Blind stamped bindings1
- Boccaccio, Giovanni, 1313-13751
- Bonus, Petrus, active 1323-1330--Manuscripts1
- Booksellers and bookselling1
- Booksellers' labels1
- Borders, Ornamental (Decorative arts)1
- Brass clasps1
- Bridget, of Sweden, Saint, approximately 1303-13731
- Brocade bindings1
- Brudenell family1
- Buddhism1
- Bulls, Papal1
- Business ethics1
- Business mathematics1