| Region | Grand East |
| Borough | 4 boroughs |
| Canton | 23 cantons |
| Common | 449 Commons |
The districts of the Ardennes department
| Arrondissement of Charleville-Mézières | Chief town: Charleville-Mézières. Municipalities of the district of Charleville-Mézières |
| Arrondissement of Rethel | Chief town: Rethel. Municipalities of the district of Rethel |
| District of Sedan | Capital: Sedan. Municipalities of the district of Sedan |
| District of Vouziers | Chief town: Vouziers. Municipalities of the district of Vouziers |
Here is the list of intermunicipalities in the department:
- Agglomeration community Ardennes Metropolis
- Communauté de communes Ardennes Thierache
- Communauté de communes Ardennes Banks of Meuse
- Community of municipalities ofArgonne Ardennes
- Community of municipalities of Pre-Ardennes ridges
- Community of municipalities of Gates of Luxembourg
- Community of communes of Rethelois country
- Communauté de communes Ardenne Valleys and Plateau