- Manuscripts, Czech1
- Manuscripts, Digital1
- Manuscripts, Greek1
- Maps1
- Marbled paper bindings1
- Marina, Saint1
- Marriage (Canon law)1
- Marriage customs and rites, Medieval1
- Marriage law1
- Marriage--Moral and ethical aspects1
- Martino, Odino S., active 15th century1
- Mary, Blessed Virgin, Saint, in the liturgy1
- Masorah1
- Mathematics1
- Mathematics, Greek1
- Maurice, Saint, -approximately 2871
- Maximus, of Turin, Saint, active 4th century-5th century1
- Medicine, Greek and Roman--Manuscripts1
- Medicine, Magic, mystic, and spagiric1
- Mediterranean Sea1