- Maria Theresa, Empress of Austria, 1717-17801
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marriage (Jewish law)1
- Marriage (Roman law)1
- Martial1
- Martini, Luca, 1980-1
- Martino, Odino S., active 15th century1
- Martyrologies1
- Martyrs1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mary Magdalene, Saint1
- Mary, Queen of Scots, 1542-15871
- Masorah1
- Mass--Celebration1
- Massachusetts--Northampton1
- Massacre of the Holy Innocents in art1
- Masses1
- Masses, Unaccompanied1
- Mathematical recreations1