- Birds1
- Birjandī, ʻAbd al-ʻAlī ibn Muḥammad ibn Ḥusayn, active 16th century. Bīst bāb dar taqvīm2
- Blaise, Saint, -approximately 3161
- Blind tooled bindings14
- Bookplates1
- Booksellers and bookselling1
- Brahmans1
- Brahmasūtra (Bādarāyaṇa)1
- Brulefer, Etienne, -approximately 14991
- Burdah (Būṣīrī, Sharaf al-Dīn Muḥammad ibn Saʻīd)1
- Burhān al-Sharīʻah, Maḥmūd ibn ʻUbayd Allāh, -1274 or 1275. Wiqāyat al-riwāyah1
- Bāb al-Ḥādī ʻashar (Ibn al-Muṭahhar al-Ḥillī, al-Ḥasan ibn Yūsuf)1
- Cabala1
- Calendar1
- Calendar, Chinese1
- Calendars3
- Calligraphy, Arabic1
- Categoriae (Aristotle)2
- Catholic Church3
- Chakras2