Former Owner
- Burgersdijk & Niermans1
- Burndy Library2
- Bury St Edmunds Abbey3
- Buxheim Charterhouse10
- Byron Reed1
- C Traylen Bookshop1
- C. W. S. Dixon1
- C.J. Spence1
- Caesareum Societatis Jesu Collegium Viennense1
- Cambrai Cathedral1
- Cambron Abbey1
- Camilla Doria Pallavicini1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate2
- Carlo Bonaparte1
- Carlo Morbio6
- Caspar René Gregory1
- Castel-Lodève family1
- Castelluci1
- Catharine Wisser1
- Catherine Barton1