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- Jean-Baptiste de Malleret (Marquess of Saint-Maixant), deputy of the nobility
- Pierre Victor, baron Malouet (1740–1814), deputy of the Third Estate of Thiers
- Jean-Joseph Manhaval (1736–1813), deputy of the Third Estate of the sénéchaussée of Rouergue at Villefranche.
- Jean-Baptiste Massieu (1743–1814), deputy of the clergy of Senlis, (Oise).
- Jean-Antoine Maudru
- Jean-Sifrein Maury (l'Abbé Maury).
- Pierre-François Mayer (? - ?), deputy of the Third Estate of the bailiwick of Sarreguemines.
- Antoine-Jean-François Ménager (1756–1826), alternate deputy of the Third Estate of the bailiwick of Meaux. (In 1791 replaced his father-in-law, Thomas-Joseph Desescoutes, who had resigned for reasons of health.)
- Jacques François Menou, deputy of the nobility
- Claude Merceret, deputy of the clergy of the bailiwick of Dijon, Côte d'Or.
- Philippe-Antoine Merlin de Douai (1754–1838)
- François Anne Joseph Meurinne, deputy of the Third Estate of Clermont, (Oise).
- François Millon de Montherlant (1726–1794), deputy of the Third Estate of the bailiwick of Beauvais, (Oise).
- Samuel de Missy
- André Boniface Louis Riquetti de Mirabeau (1754–1795), called Mirabeau-Tonneau, deputy of the nobility of the sénéchaussée of Limoges.
- Honoré Gabriel Riqueti, comte de Mirabeau (1749–1791)
- Jean-Charles-Antoine Morel (1752–1832), alternate deputy of the bailiwick of Sarreguemines, (On 21 January 1790, he replaced Pierre-François Mayer, who had resigned).
- Ildut Moyot, (1749–1813), deputy of the Third Estate of the sénéchaussée of Brest.
- François-Xavier Marc Antoine de Montesquiou (1757–1832), deputy of the clergy of Paris
- Anne-Pierre, marquis de Montesquiou-Fézensac (1739–1798)
- Mathieu Jean Félicité, duc de Montmorency-Laval (1766–1826), deputy of the nobility of the bailiwick of Montfort-l'Amaury.
- Médéric Louis Élie Moreau de Saint-Méry (1750–1803)
- Jean Baptiste Mosneron de l'Aunay, (1738–1830)
- Jean Joseph Mounier, (1758–1806), deputy of the Third Estate of the Dauphiné.
Read more about this topic: List Of Members Of The National Constituent Assembly Of 1789