Medicine: Biographies
- Marie Francois Xavier Bichat
- Marshall Hall
- Mary Mallon
- Maud Slye
- Max Ludwig Henning Delbruck
- Max Theiler
- Michael Ellis De Bakey
- Nicolaas Tulp
- Nicolaus Steno
- Nicolo Leoniceno
- Niels Ryberg Finsen
- Niels Stensen
- Nikolai Ivanovich Pirogov
- Oliver Wolf Sacks
- Oswaldo Goncalves Cruz
- Otto Heinrich Warburg
- Otto Loewi
- Otto Meyerhof
- Patrick Manson
- Paul Broca