- Malchus, Saint1
- Mandeville, John, Sir1
- Manners and customs1
- Manuel I, King of Portugal, 1469-15211
- Manuscripts, Catalan1
- Manuscripts, Czech1
- Manuscripts, Dutch1
- Manuscripts, Greek1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Judeo-Arabic1
- Manuscripts, Occitan1
- Manuscripts, Samaritan1
- Manzoli, Marchione1
- Marbled paper bindings1
- Maria Anna Josefa, Queen, consort of John V, King of Portugal, 1683-17541
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marina, Saint1
- Marriage (Canon law)--Dispensations1
- Marriage (Roman law)1
- Marriage law1