- Manzoli, Marchione1
- Maps1
- Marbled paper bindings1
- Marginalia1
- Maria Theresa, Empress of Austria, 1717-17801
- Marriage1
- Marriage (Jewish law)1
- Martino, Odino S., active 15th century1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mary Magdalene, Saint1
- Mass--Celebration1
- Massachusetts--Williamstown1
- Maʻariv1
- Maḥzor1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medical education1
- Medici, Alessandro de', 1510-15371
- Medici, Bastiano de'1
- Medici, Carlo Bernardo Alamanni de'1