The Arrondissement of Nivelles (French: Arrondissement de Nivelles; Dutch: Arrondissement Nijvel) is an arrondissement in Wallonia and Belgium. It is the only arrondissement in the province of Walloon Brabant, and is coterminous with it. Before 1995, it was one of three arrondissements in the Province of Brabant.
It is both an administrative and a judicial arrondissement, both having the same borders as the province.
Municipalities
The Administrative Arrondissement of Nivelles consists of the following 27 municipalities: