| Thelonne | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Thelonne.svg |
| Arrondissement: | Sedan |
| Canton: | Sedan-1 |
| Insee: | 08445 |
| Postal Code: | 08350 |
| Mayor: | Denis Aupretre[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Ardenne Métropole |
| Coordinates: | 49.6522°N 4.9444°W |
| Elevation M: | 173 |
| Elevation Min M: | 162 |
| Elevation Max M: | 307 |
| Area Km2: | 3.84 |
Thelonne is a commune in the Ardennes department in northern France.