- Aldis, Sir Charles, 1775?-18633
- Alexander I, Emperor of Russia, 1777-18251
- Alexander I, Emperor of Russia, 1777-1825,1
- Alexander, William1
- Alexandra, Queen, consort of Edward VII, King of Great Britain, 1844-1925.1
- Allbutt, T. Clifford (Thomas Clifford), 1836-19252
- Allen, Bennet, b. 1736 or 71
- Allen, Charles Dexter, 1865-19261
- Allen, Edgar, 1892-19432
- Allgemeines Krankenhaus (Vienna, Austria).1
- Alling, Arthur Nathaniel, 1862-19491
- Ambrose, Saint, Bishop of Milan, -397,1
- American Asiatic Association1
- American College of Surgeons1
- American Red Cross.11
- Ames, Edward1
- Ames, Louise Bates, 1908-19961
- Amnon (Son of David).1
- Amson, John1
- Anderdon, John1
