梅森（荷兰语：Mesen, 法语：Messines）是位于比利时西佛兰德省部的一座城市，人口9,888人（2006年）。

Mesen (Messines in French, historically used in English) is a city 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 km² which gives a population density of 276 inhabitants per km².