Mesen (Dutch pronunciation:[ˈmeːsə(n)]; French: Messines, French pronunciation:[mɛsin], historically used in English) is a city and municipality located in the Belgian province of West Flanders. On January 1, 2006, Mesen had a total population of 988. The total area is 3.58 km which gives a population density of 276 inhabitants per km.
The municipality comprises only one main settlement, the town of Mesen proper. An exclave to the west of the main territory is surrounded by the municipalities of Heuvelland and Comines-Warneton.
The territory of Mesen (marked 'I') and its immediate neighbours. Built-up areas are shown in yellow.