Maro - Maur
- Maroni, Paul
- Maronia
- Maronites
- Marquesas Islands
- Marquess of Ripon
- Marquette (Michigan)
- Marquette League
- Marquette University
- Marquette, Jacques
- Marquis de Montcalm-Gozon
- Marquis de Pombal
- Marquise de Maintenon
- Marriage Banns
- Marriage, Civil
- Marriage, History of
- Marriage, Mixed
- Marriage, Moral and Canonical Aspect of
- Marriage, Mystical
- Marriage, Putative
- Marriage, Ritual of
- Marriage, Sacrament of
- Marriage, Validation of
- Marryat, Florence
- Marseilles
- Marshall Islands
- Marshall, Thomas William
- Marsi
- Marsico Nuovo and Potenza
- Marsigli, Luigi Ferdinando, Count de
- Marsilio Ficino
- Marsilius of Padua
- Mart.
- Martel, Charles
- Martène, Edmond
- Martha, Maris, Audifax, and Abachum, Saints
- Martha, Saint
- Martial, Saint
- Martiall, John
- Martianay, Jean
- Martianus Capella
