- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marignis, Niccolò de1
- Marini, Nicola Antonio1
- Maro, Guglielmo1
- Marriage (Canon law)1
- Marriage (Canon law)--Dispensations1
- Marriage (Islamic law)1
- Marriage customs and rites1
- Marriage customs and rites, Medieval1
- Marriage--Religious aspects1
- Marshals1
- Martini, Giovanni1
- Martini, Girolamo1
- Martino, Barone di1
- Martino, Odino S., active 15th century1
- Martino, Vanni di1
- Martyrdom1
- Martyrs1
- Mary Magdalene, Saint1
- Masjid al-Aqṣá (Jerusalem)1