Montfort-en-Chalosse (, literally Montfort in Chalosse; , before 1962: Montfort) is a commune in the Landes department in Nouvelle-Aquitaine in southwestern France.
Between 2001 and 2014, Françoise Dartigue-Peyrou was the mayor.
Christian Bouet was a town councillor until 2014. He had 7 terms for 43 years, a record in Montfort-en-Chalosse.