The arrondissement of Sedan is an arrondissement of France in the Ardennes department in the Grand Est region.

[2] Its population is 56,483 (2021), and its area is 792.2 km2 (305.9 sq mi).

[3] The communes of the arrondissement of Sedan, and their INSEE codes, are:[2] The arrondissement of Sedan was created in 1800, disbanded in 1926 and restored in 1942.

[4] As a result of the reorganisation of the cantons of France which came into effect in 2015, the borders of the cantons are no longer related to the borders of the arrondissements.

The cantons of the arrondissement of Sedan were, as of January 2015:[5]