- 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
- Mathematics, Greek1
- Mathematics, Jewish1
- Maurice, Saint, -approximately 2871
- Maximian, Emperor of Rome, approximately 240-3101