Montfort (Limburgish: Mofert) is a town in the Dutch province of Limburg. Montfort has about 3,000 inhabitants. It lies about 8 km south of Roermond. It received city rights in 1271 and is renowned for the ruins of Castle Montfort, built in the 13th century.Until 1991, Montfort was a separate municipality. It then became part of Posterholt, which was later renamed Ambt Montfort.Since 1 January 2007, Montfort has been part of the municipality of Roerdalen.