- Mathematics, Greek1
- Maximian, Emperor of Rome, approximately 240-3101
- Maximus, of Turin, Saint, active 4th century-5th century1
- Maḥzor. Yom Kippur1
- Medici, Bernardo d'Alamanno de'1
- Medici, House of1
- Medici, Lorenzo de', 1449-14921
- Medicine, Ancient1
- Medicine, Magic, mystic, and spagiric1
- Mehmed II, Sultan of the Turks, 1432-14811
- Mekhilta of Rabbi Ishmael1
- Merchants1
- Merlin (Legendary character)1
- Merovingian scripts1
- Metaphysics (Aristotle)1
- Methodology1
- Mexico1
- Mezuzah1
- Michaelmas1
- Middle East--Palestine1