- Maximus, of Turin, Saint, active 4th century-5th century1
- Małogoszcz (Poland)1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medical astrology1
- Medical formularies1
- Medici, Alamanno de'1
- Medici, Carlo de'1
- Medici, Francesca de'1
- Medici, Ottavia Altoviti1
- Medici, Vincenzo de'1
- Medicine, Ancient1
- Medicine--Manuscripts1
- Mehmed II, Sultan of the Turks, 1432-14811
- Melanchthon, Philip, 1497-1560. De officio principum1
- Mercy1
- Merlin (Legendary character)1
- Merovingian scripts1
- Methodology1
- Mexico--Chiapas1
- Michaelmas1