The Arrondissement of Namur (French: Arrondissement de Namur) is one of the three administrative arrondissements in the Walloon province of Namur, Belgium.

It is both an administrative and a judicial arrondissement.

The territory of the Judicial Arrondissement of Namur coincides with that of the Administrative Arrondissement of Namur.

The Administrative Arrondissement of Namur consists of the following municipalities:[1]