The Arrondissement of Tournai-Mouscron (; ) is one of the seven administrative arrondissements in the Walloon province of Hainaut, Belgium. The Arrondissement of Tournai-Mouscron was created in 2019 by the merger of the former arrondissements of Tournai and Mouscron.
The Administrative Arrondissement of Mouscron consists of the following municipalities (with their Dutch name):