Former Owner
- Akbar1
- Alan G. Thomas1
- Alan H. Kempner1
- Albert Parker, 3rd Earl of Morley1
- Alexander Hamilton, 10th Duke of Hamilton1
- Alexandre de Keller1
- Alfredo Chavero1
- Algernon Percy, 10th Earl of Northumberland1
- Ali Asghar Antiquatchi1
- Alice Millard1
- Alison Johnstone1
- Allen Johnson1
- Alpha Loretta Owens1
- Amelia Daubeney1
- Amorbach Abbey1
- Ampleforth Abbey1
- Anderson Galleries1
- Andrea Tessier1
- Andrea della Valle1
- Andreas Gross Seiffensieder1