- Blaeu, Willem Janszoon, 1571-1638. Teatrum orbis terrarum1
- Blank forms1
- Blind stamped bindings1
- Blind tooled (decoration)1
- Boards1
- Boccaccio, Giovanni, 1313-13751
- Boethius, -5241
- Botany, Medical1
- Bouchard family1
- Breviary (Catholic Church)1
- Brutus, Marcus Junius, 85 B.C.?-42 B.C.1
- Brutus, the Trojan (Legendary character)1
- Bucolica (Virgil)1
- Buddhist literature, Pali1
- Burial laws (Jewish law)1
- Burlaeus, Gualterus, 1275-1345?1
- Burma1
- Business mathematics1
- Byzantine Empire1
- Būṣīrī, Sharaf al-Dīn Muḥammad ibn Saʻīd, 1213?-1296? Burdah1