Former Owner
- Abbey of Morimondo1
- Abbey of Santa Giustina1
- Abbey of St. Vaast1
- Abū al-Ḥasan Dallāl1
- Acton Griscom1
- Adalbert von Lanna1
- Adam Clarke1
- Adelrich Benziger1
- Admont Abbey1
- Adʹham Nūrī Waṣfī1
- Alan H. Kempner1
- Albert Parker, 3rd Earl of Morley1
- Alexander Hamilton, 10th Duke of Hamilton1
- Alfonso Cassuto1
- Alfred Cock1
- Ali Asghar Antiquatchi1
- Alison Johnstone1
- Allen Johnson1
- Amīr Bahādur Jank ʻAẓim Allāh Khān1
- Andrea della Valle1