​MENIN (Flemish Meenen), a town of Belgium in the province of West Flanders situated on the Lys 7 m. S. of Courtrai. Pop. (1904), 19,377. It manufactures linen and flannel, and in the neighbourhood are extensive tobacco plantations. It was first ​fortified in 1 578, and in 1685 Vauban made it one of the strongest places on the French frontier, but the fortifications were razed in 1748 by the treaty of Aix-la-Chapelle.