- Manzoli, Marchione1
- Mariano, Fra1
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marignis, Niccolò de1
- Marini, Nicola Antonio1
- Maro, Guglielmo1
- Marriage (Roman law)1
- Marriage customs and rites, Medieval1
- Martellini, Vincenzio1
- Martini, Girolamo1
- Martini, Luca, 1980-1
- Martino, Barone di1
- Martino, Odino S., active 15th century1
- Martino, Vanni di1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mary Magdalene, Saint1
- Mary, Queen of Scots, 1542-15871
- Mass1
- Massaran, Isaac de1