Asse is a municipality located in the Belgian province of Flemish Brabant. It is situated within the Pajottenland region and encompasses the towns of Asse proper, Bekkerzeel, Kobbegem, Mollem, Relegem, and Zellik.
As of 2020, the municipality had a total population of 32,958. The area covers 49.64 km², resulting in a population density of approximately 660 inhabitants per km².