| Gergny | |
| Commune Status: | Commune |
| Arrondissement: | Vervins |
| Canton: | Vervins |
| Insee: | 02342 |
| Postal Code: | 02260 |
| Mayor: | Jean-Pierre Comba[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Thiérache du Centre |
| Coordinates: | 49.915°N 3.935°W |
| Elevation M: | 200 |
| Elevation Min M: | 126 |
| Elevation Max M: | 219 |
| Area Km2: | 5.86 |
Gergny (in French pronounced as /ʒɛʁɲi/) is a commune in the Aisne department in Hauts-de-France in northern France.