- Manuscripts, Indic1
- Manuscripts, Khmer1
- Manuscripts, Sanskrit1
- Manzoli, Marchione1
- Margarita, de Austria, Queen, consort of Philip III, King of Spain, 1584-16111
- Marginalia1
- Maria Anna Josefa, Queen, consort of John V, King of Portugal, 1683-17541
- Marriage1
- Marriage (Canon law)1
- Marriage (Canon law)--Dispensations1
- Marshals1
- Martino, Odino S., active 15th century1
- Mary, of Bethany, Saint1
- Mathematics, Arab1
- Mathematics, Greek1
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Medical formularies1
- Medici, Alessandro de', 1510-15371
- Medici, House of1
- Medicine, Medieval1