Wattrelos (; archaic ) is a commune in the Nord department in the Nord-Pas de Calais region of northern France. It is located on the border with Belgium, northeast of the city of Lille. The fifth-largest component of the Métropole Européenne de Lille, Wattrelos borders the communes of Roubaix, Tourcoing and Leers in France and the communes of Mouscron and Estaimpuis in Belgium. Population Heraldry Twin towns – sister cities Wattrelos is twinned with: Eschweiler, Germany Guarda, Portugal Köthen, Germany Mohács, Hungary Siemianowice Śląskie, Poland See also Communes of the Nord department References External links Official website Communes of Nord (French department) French Flanders