- Mathematics, Greek1
- Mathematics, Jewish1
- Maurice, Saint, -approximately 2871
- Maximian, Emperor of Rome, approximately 240-3101
- Maximus, of Turin, Saint, active 4th century-5th century1
- Maʻariv1
- Maḥzor5
- Meat inspection (Jewish law)2
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medical care1
- Medical education1
- Medici, Alamanno de'2
- Medici, Alessandro de', 1510-15372
- Medici, Andrea de'7
- Medici, Bastiano de'1
- Medici, Bernardo d'Alamanno de'1
- Medici, Bivigliano de'4
- Medici, Camillo de'3
- Medici, Carlo Bernardo Alamanni de'1
- Medici, Carlo de'9