Former Owner
- Antonio Dominico Restis1
- Antonio Lauro1
- Antonio de Bonius1
- Antonio di Matteo di Giovanni Foresi da Bibbiena1
- Antonius Mensing1
- Arnold Jansen op de Haar1
- Art ancien S.A.5
- Artemesia Piccolomini1
- Arthur Annesley, 1st Earl of Anglesey1
- Arthur Brölemann2
- Arthur H. Lea2
- Arthur Hood, 1st Baron Hood of Avalon1
- Arthur Kay1
- Arthur Liddell, 5th Baron Ravensworth1
- Arthur M. Ellis1
- Ashton Lever1
- Audry Wilkens1
- Augustinus de Cagnolis1
- Austin, Jehan1
- Baldassarre Boncompagni5