Former Owner
- Adam Sim1
- Adam de Campigny1
- Adelbert Brownlow-Cust, 3rd Earl Brownlow1
- Adelrich Benziger1
- Admont Abbey Library1
- Adolphe Morlot1
- Adrian Van Sinderen1
- Agnes Browne1
- Alain Campbell White1
- Alan Noel Latimer Munby1
- Albert Figdor1
- Albert M. Patrick1
- Albert M. Todd1
- Albert Parker, 3rd Earl of Morley1
- Albert VII of Mansfeld1
- Alex Scott Carter1
- Alexander Bannatyne Stewart1
- Alexander Boswell, Lord Auchinleck1
- Alexander E. Vida1
- Alexander Hamilton, 10th Duke of Hamilton1