Encyclopedias, Almanacs, Transcripts, and Maps
- Matsumur, Fuseo
- Matter Passing through Matter
- Matthew Alexander Henson
- Matthew Alexander Henson
- Matthew Baillie
- Matthew Boulton
- Matthew Dobson
- Matthew Williams Stirling
- Matthias Jakob Schleiden
- Maunder Minimum
- Maunder Minimum
- Maurice Farman
- Maurice Herzog
- Maurice René Fréchet
- Maurice René Fréchet
- Maurice Vincent Wilkes
- Maurice Vincent Wilkes
- Max Delbruck
- Max Ferdinand Perutz
- Max Johann Sigismund Schultze