Lier is a municipality situated in the Antwerp province within the Flanders region of Belgium. The municipality comprises the city of Lier proper and the village of Koningshooikt, covering a total area of 49.70 km2 with a population density of 720 people per km2 as of 2018.
The city center developed around the river Nete, which surrounds the urban core. Lier is recognized for its local beers, its patron saint St. Gummarus, and the traditional Lierse vlaaikes cake. Additionally, the municipality serves as the global headquarters for Van Hool, a manufacturer of buses and coaches, and is home to two primary football clubs: K. Lyra-Lierse and K. Lierse S.K.