| Gercy | |
| Commune Status: | Commune |
| Arrondissement: | Vervins |
| Canton: | Vervins |
| Insee: | 02341 |
| Postal Code: | 02140 |
| Mayor: | Philippe Lemoine[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Thiérache du Centre |
| Coordinates: | 49.8139°N 3.8683°W |
| Elevation M: | 130 |
| Elevation Min M: | 108 |
| Elevation Max M: | 189 |
| Area Km2: | 6.33 |
Gercy (in French pronounced as /ʒɛʁsi/) is a commune in the Aisne department in Hauts-de-France in northern France.