- Lombards1
- Lorraine, Nicolas-François, duc de, 1609-16701
- Macaronic poetry1
- Macaronic verse1
- Manuscripts, Chagatai1
- Manuscripts, Turkish1
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marriage (Canon law)1
- Marriage (Canon law)--Dispensations1
- Marshals1
- Mary, Blessed Virgin, Saint1
- Mary, of Bethany, Saint1
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Medici, Bernardo d'Alamanno de'1
- Medici, House of1
- Medicine1
- Medicine, Arab1
- Medicine, Greek and Roman1
- Medina, Francisco de, 1544-16151
- Miscellanea1