Former Owner
- Antoine-Augustin Renouard1
- Antoni Jerzy Apponyi1
- Antonio Assemani1
- Antonio Cánovas del Castillo1
- Antonio Dominico Restis1
- Antonio Medin1
- Antonius Mensing1
- Apostolo Zeno1
- Arenburg1
- Arnold Jansen op de Haar1
- Arnold Mettler1
- Arthur Brölemann1
- Arthur Hood, 1st Baron Hood of Avalon1
- Arthur Lee Loeb1
- Arthur Liddell, 5th Baron Ravensworth1
- Arthur M. Ellis1
- Arthur de l'Isle du Dréneuc1
- Ashton Rollins Sanborn1
- Austin, Jehan1
- Aḥmad ibn Mubārak Luṭf Allāh1