Mont-de-Marsan ([mɔ̃ də maʁsɑ̃]; Gascon: Lo Mont de Marçan) is a commune and capital of the Landes department in Nouvelle-Aquitaine in southwestern France.
The French Air Force operates the Constantin Rozanoff Mont-de-Marsan airbase about 2 kilometres north of the town. The base includes CEAM (the French air force military experimentation and trials organisation), an air defense radar command reporting centre and an air defence control training site. Mont-de-Marsan airbase was formerly home to France's first operational squadron of nuclear bombers, the Dassault Mirage IVA.The Donjon Lacataye is the keep of a 14th-century castle
Despiau-Wlérick Museum (1930s sculpture by two local artists)
Marechal Foch's equestrian statue
Stade Montois is the city's rugby and football team.
Two historic punk rock music festivals were held in Mont-de-Marsan's bullring in 1976 and 1977.
Festival Arte Flamenco international festival created in 1989 in Mont-de-Marsan by the council of the Landes department.Joël Bats, association football goalkeeper (1957 – )
Patrick Biancone, horse racing trainer, (1952 – )
Pierre Bosquet, Marshal of France, (1810–1861)
Thomas Castaignède, rugby union footballer, (1975 – )
Charles Despiau, sculptor, (1874–1946)
Alain Juppé, politician and former Prime Minister of France, (1945 – )
Romain Larrieu, association football goalkeeper (1976 – )
Louis-Anselme Longa, painter, (1809-1869)
Abdoulaye Loum, basketball player
Jean van de Velde, golfer, (1966 – )
Fabien Vehlmann, comics writer, (1972 – )
Mont-de-Marsan is twinned with: Tudela, Navarre, Spain