- Margarita, de Austria, Queen, consort of Philip III, King of Spain, 1584-16111
- Maria Anna Josefa, Queen, consort of John V, King of Portugal, 1683-17541
- Marital property1
- Markets1
- Marriage (Canon law)--Dispensations1
- Marriage (Roman law)1
- Marriage customs and rites1
- Marshals1
- Martino, Odino S., active 15th century1
- Martinus, Polonus, -12791
- Mary Magdalene, Saint1
- Mary, Blessed Virgin, Saint, in the liturgy--Orthodox Eastern Church1
- Mary, of Bethany, Saint1
- Mashāriq al-anwār (Ṣaghānī, al-Ḥasan ibn Muḥammad)1
- Masnavis, Persian1
- Mass (Music)1
- Mas̲navī (Jalāl al-Dīn Rūmī, Maulana)1
- Materia medica1
- Materia medica, Vegetable1
- Maxims1