| Dercy | |
| Commune Status: | Commune |
| Arrondissement: | Laon |
| Canton: | Marle |
| Insee: | 02261 |
| Postal Code: | 02270 |
| Mayor: | Bernard Bornier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de la Serre |
| Coordinates: | 49.7042°N 3.6858°W |
| Elevation M: | 68 |
| Elevation Min M: | 63 |
| Elevation Max M: | 140 |
| Area Km2: | 11.17 |
Dercy (in French pronounced as /dɛʁsi/) is a commune in the Aisne department in Hauts-de-France in northern France.