Former Owner
- Bonvesino, Marco1
- Brahmānaṃdatīrtha1
- Bridget Hunt1
- Bridgewater Library1
- Brinton, Daniel G. 1837-18991
- Bristol Baptist College1
- Budapest University of Jewish Studies1
- Burg Kreuzenstein1
- Burndy Library1
- Buxheim Charterhouse4
- Bākīr ibn Muṣṭafá Fūṭī1
- Bālambhaṭṭamuni1
- Bāpaṭa Kṛṣṇabhaṭa1
- Bīkānera Anūpa Saṃskr̥ta Pustakālaya1
- Būtū ʻAbd al-Bāqī1
- Camillo Riccio1
- Carl Alphons Geigy-Hagenbach1
- Carl Frederick Haussmann1
- Carl Reinhardt4
- Carleton Rubira Richmond1