- Bible. Old Testament1
- Bible. Wisdom of Solomon1
- Bidāyat al-mubtadī (Marghīnānī, ʻAlī ibn Abī Bakr)1
- Blaise, Saint, -approximately 3161
- Bona, Queen, consort of Sigismund I, King of Poland, 1494-15571
- Booksellers and bookselling1
- Booksellers' labels1
- Bread1
- Brescia (Italy). Podestà1
- Breviary (Catholic Church)1
- Brulefer, Etienne, -approximately 14991
- Buildings1
- Buonaccorsi family1
- Buonaccorsi, Constanza1
- Buonaccorsi, Niccolò di Piero1
- Buonaccorsi, Piero1
- Buondelmonte, Piero1
- Burdah (Būṣīrī, Sharaf al-Dīn Muḥammad ibn Saʻīd)1
- Busdraghi, Matteo, 14th century1
- Busdraghi, Nicola, 14th century1