- Love1
- Love poetry, English (Middle)1
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Magi1
- Malavolti, Bartolomeo de1
- Malavolti, Donusdei Margarita de1
- Malavolti, Francesco di Bartolomeo de1
- Malavolti, Orlando Donusdei de1
- Manners and customs1
- Manuscripts, German1
- Manuscripts, German (Middle High)1
- Manuscripts, Greek1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Hebrew1
- Manuscripts, Turkish1
- Maps1
- Materia medica, Vegetable1
- Matthei, Bernardino1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Alessandro de', 1510-15371