Medicine: Biographies
- Adam of Bodenstein
- Agostino Nifo
- Albert Bruce Sabin
- Albert Jan Kluyver
- Albert von Szent-Gyorgyi
- Albrecht von Haller
- Alexis Carrel
- Alice Hamilton
- Allvar Gullstrand
- Alphonse Laveran
- Ambroise Pare
- Andre Lwoff
- Andreas Vesalius
- Antonia C. Novello
- Antonio Pensa
- Antony van Leeuwenhoek
- Archibald Vivian Hill
- Arthur Kornberg
- Arthur Robertson Cushny
- August von Wassermann