Former Owner
- Basilica of Santa Maria Novella1
- Basilios Bessarion1
- Bateman family2
- Battista di Ser Cicco di Fermo1
- Battle Abbey1
- Bayeux Cathedral1
- Baḥrānī, Muḥammad ibn ʻAlī ibn Ḥaydar ibn Ḥasan ibn Ḥaydar1
- Beatrice de Fouar1
- Beatus Rhenanus1
- Beauvais Cathedral3
- Beinecke Rare Book & Manuscript Library1
- Benedetto Affaticati2
- Benedetto Pistrucci1
- Benediktinerinnenabtei St. Walburg1
- Benetto Spinelli1
- Benignus of Dijon1
- Benjamin Ashworth1
- Benjamin Franklin Stevens4
- Benjamin Heywood Bright1
- Benjamin ben Salem Elark1