Maintenon (French pronunciation: [mɛ̃tənɔ̃]) is a commune in the metropolitan area of Paris, France. It is located 63.5 km (39.5 mi) southwest of the center of Paris.

Maintenon, together with the neighbouring commune of Pierres, form an urban area of 7,324 inhabitants (2022).

Maintenon is known for its picturesque Château de Maintenon, first home to the family d’Angennes, Marquis de Maintenon, later home of Madame de Maintenon, morganatic second wife of King Louis XIV.

Another tourist attraction is the ruined aqueduct of Maintenon, built by Louis XIV to carry water from the Eure to the gardens of the Palace of Versailles.

Maintenon is served by Maintenon station on the fast regional rail line between Paris and Le Mans via Chartres. Maintenon is connected to the Ile de France network of suburban trains which start at Rambouillet.