Wervik is a city and municipality situated in the province of West Flanders within the Flanders region of Belgium. The municipality encompasses both the city of Wervik and the town of Geluwe, covering a total area of 43.61 km2. As of January 1, 2014, the municipality had a population of 18,435, resulting in a population density of 423 inhabitants per square kilometer.
The region is notably recognized for its high-quality tobacco production and houses a dedicated tobacco museum. Geographically, the city is separated from its French counterpart, Wervicq-Sud, by the river Lys.