- Ludovico Sforza, Duke of Milan, 1452-15081
- Lute music1
- Machiavelli family1
- Madrigals, Italian1
- Malatesta family1
- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Mancini, Girolamo, 1832-19241
- Manuscript maps1
- Manuscripts, Catalan1
- Manuscripts, German1
- Manuscripts, Greek1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Medical1
- Maps1
- Marbled paper bindings1
- Mariano, Fra1
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marital property1
- Marriage1
- Marshals1