- Martino, Barone di1
- Martino, Odino S., active 15th century1
- Mary, Blessed Virgin, Saint1
- Masjid al-Aqṣá (Jerusalem)1
- Massi, Francesca1
- Mathematics, Greek1
- Mattei, Teo1
- Matteo, Bernardo di1
- Maḥbūbī, ʻUbayd Allāh ibn Masʻūd, -1346 or 1347. Wishāḥ fī al-maʻānī wa-al-bayān1
- Mecco, Francesca di1
- Mecco, Xalento di1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Alamanno de'1
- Medici, Bernardo de'1
- Medici, Giuliano de'1
- Medici, Lorenzo de', 1449-14921
- Medici, Vanne de'1
- Medicine, Magic, mystic, and spagiric1
- Medicine, Medieval1
- Medicine, Persian1