- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marriage (Roman law)1
- Mass (Music)1
- Mathematics, Greek1
- Maxims1
- Medici, Lorenzo de', 1449-14921
- Medicine, Ancient1
- Medicine, Medieval1
- Mehmed II, Sultan of the Turks, 1432-14811
- Merovingian scripts1
- Mesgissier, Martin le1
- Metaphysics (Aristotle)1
- Mexico--Chiapas1
- Mexico--Culhuacán1
- Mexico--Michoacán de Ocampo1
- Mexico--Temascaltepec1
- Mexico--Tulancingo Region (Hidalgo)1
- Mexico--Zempoala (Hidalgo)1
- Michaelmas1
- Military campaigns1