- Mancini, Girolamo, 1832-19241
- Manuscript maps1
- Manuscripts, Catalan1
- Manuscripts, German1
- Manuscripts, Greek1
- Manuscripts, Greek (Medieval and modern)1
- Maps1
- Marbled paper bindings1
- Mariano, Fra1
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marital property1
- Marriage1
- Martellini, Vincenzio1
- Martini, Giovanni1
- Martini, Luca, 1980-1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mary, Queen of Scots, 1542-15871
- Mathematical recreations1
- Maurice, Saint, -approximately 2871