Former Owner
- Baldassarre Boncompagni1
- Barbara Hackenmayrin1
- Barbarigo family1
- Bateman family1
- Battista di Ser Cicco di Fermo1
- Battle Abbey1
- Beatus Rhenanus1
- Benignus of Dijon1
- Benjamin Ashworth1
- Benjamin Franklin Stevens1
- Bern Dibner1
- Bernard Halliday1
- Bernard Quaritch1
- Bernard Quaritch Ltd1
- Bernard Serrigny1
- Bertram Dobell1
- Bet din tsedeḳ London ṿeha-medinah1
- Betty Freudenheim1
- Birch & Son1
- Bruce Bannerman1