- Masjid al-Ḥarām1
- Mass (Music)1
- Mass--Celebration1
- Massaran, Isaac de1
- Massi, Francesca1
- Materia medica1
- Mathematicians, Arab1
- Mattei, Teo1
- Matteo, Bernardo di1
- Matteo, Giovanni di1
- Matthei, Bernardino1
- Matthias I, King of Hungary, 1443-14901
- Maydūmī, Muḥammad ibn Muḥammad, -13531
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Mecco, Francesca di1
- Mecco, Xalento di1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Elisabetta de'1
- Medici, Giovenco de'1
- Medici, Giuliano de'1