| Erlon | |
| Commune Status: | Commune |
| Arrondissement: | Laon |
| Canton: | Marle |
| Insee: | 02283 |
| Postal Code: | 02250 |
| Mayor: | Louise Dupont[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de la Serre |
| Coordinates: | 49.73°N 3.7147°W |
| Elevation M: | 88 |
| Elevation Min M: | 68 |
| Elevation Max M: | 136 |
| Area Km2: | 8.9 |
Erlon (pronounced as /fr/) is a commune in the Aisne department in Hauts-de-France in northern France.