- Mathematics, Greek1
- Mattei, Teo1
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- Maurice, Saint, -approximately 2871
- Maximian, Emperor of Rome, approximately 240-3101
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- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Giovenco de'1
- Medici, Giuliano de'1
- Medici, House of1
- Medici, Lorenzo de', 1449-14921
- Medici, Vanne de'1
- Medicinal plants1
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- Medicine, Magic, mystic, and spagiric1
- Mediterranean Region1
- Mehmed II, Sultan of the Turks, 1432-14811
- Mellini, Piero1