Former Owner
- Alfonso Cassuto2
- Alfred Chester Beatty1
- Alfred Cock1
- Alfred E. Hamill1
- Alfred Henry Huth5
- Alfred Morrison2
- Alfred Seymour1
- Alfredo Chavero3
- Algernon Percy, 10th Earl of Northumberland1
- Alphonse Labitte1
- Alphonse Pinart2
- Ambroise Firmin Didot4
- Amorbach Abbey1
- Andreas Adelbert Popp1
- Andreas Gross Seiffensieder1
- Andrew Gifford1
- André Le Mercier1
- André Rooryck1
- André de Coppet2
- Anne Baker Lewis13