Mantilly () is a commune in the Orne department in north-western France.
The commune is made up of the following collection of villages and hamlets, La Tournerie, L'ÃÂpine des Champs, Mantilly, La Bostière, Le Fourmond and Dompierre.
The river Colmont flows through this commune.
The commune is in the Normandie-Maine Regional Natural Park.