Former Owner
- Alan G. Thomas1
- Albert C. Baugh1
- Albert Parker, 3rd Earl of Morley1
- Alexander Bannatyne Stewart1
- Alexander Beresford Hope1
- Alexander Fuller-Acland-Hood, 1st Baron St Audries1
- Alexander Isaac Cotheal1
- Alexander Smith Cochran1
- Alfred Trapnell1
- Ali Asghar Antiquatchi1
- Alice M. Taylor1
- Allen Johnson1
- Alonso Mendez de Parada1
- Alvise Bochini1
- Anderson Galleries1
- Andrea S.1
- Andreas Justus Cennis1
- Andrew Fountaine1
- Andrés Ordoñez1
- Angela Burdett-Coutts, 1st Baroness Burdett-Coutts1