The Leuven Arrondissement (Dutch: Arrondissement Leuven; French: Arrondissement de Louvain) is one of two arrondissements in the Belgian province of Flemish Brabant. It lies east of the Brussels-Capital Region. The arrondissement has an area of 1,168.83 km (451.29 sq mi) and has (as of January 1, 2017) 502,602 inhabitants.

The arrondissement is made up of the following municipalities:

Formerly independent municipalities or deelgemeenten: