- Leo X, Pope, 1475-15211
- Local officials and employees1
- Logic1
- Malavolti, Bartolomeo de1
- Malavolti, Donusdei Margarita de1
- Malavolti, Francesco di Bartolomeo de1
- Malavolti, Orlando Donusdei de1
- Manuscripts, Arabic1
- Manuscripts, Persian1
- Manuscripts, Turkish1
- Massachusetts--Wellesley1
- Matthei, Bernardino1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Meditations1
- Merchants1
- Meschiati, Giovanni1
- Middle East--Jerusalem1
- Middle East--Jerusalem (Latin Kingdom)1
- Military religious orders1
- Miserere1