- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Hebrew1
- Manuscripts, Medical1
- Marginalia1
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marriage1
- Marriage law1
- Marshals1
- Martini, Giovanni1
- Martini, Luca, 1980-1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mary, Queen of Scots, 1542-15871
- Mathematical recreations1
- Mathematics1
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Medici, Bastiano de'1
- Medici, Elisabetta de'1
- Medici, Fernando de'1
- Medici, Francesca de'1