The Arrondissement of Thuin (; ) is one of the seven administrative arrondissements in the Walloon province of Hainaut, Belgium.
The Administrative Arrondissement of Thuin consists of the following municipalities:
Since 2019
Before 2019
The municipalities of Binche, Estinnes and Morlanwelz are detached from the Arrondissement on January 1, 2019 to create the new Arrondissement of La Louvière.