- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Manuscript waste1
- Manuscript waste (Binding)1
- Manuscripts, Catalan1
- Manuscripts, English1
- Manuscripts, French1
- Manuscripts, German1
- Manuscripts, Greek (Medieval and modern)1
- Mariano, Fra1
- Marriage1
- Martini, Giovanni1
- Martini, Luca, 1980-1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mathematical recreations1
- Maurice, Saint, -approximately 2871
- Maximian, Emperor of Rome, approximately 240-3101
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Bastiano de'1
- Medici, Carlo Bernardo Alamanni de'1