Former Owner
- Avi Shalom1
- Avraham Gimani1
- Avraham Yedidiah Levi1
- Avraham ben Yahya1
- Avraham ben ʻAlon1
- Aḥmad al-Mudarris1
- B. Goussil1
- B.C. Barker-Benfield1
- B.L. Riese1
- Bahman Mirza Qajar1
- Baldasarre Boncompagni1
- Baptist Union Theological Seminary1
- Barbara Hackenmayrin1
- Barbarigo family1
- Barbe de Laon1
- Barbeau Abbey1
- Baron Llangattock1
- Baron Paul Adolphe Dieudonné Thiébault1
- Bartholdus and Johann Flachmann1
- Bartholus Blancellus1