| Fresnes-sous-Coucy | |
| Commune Status: | Commune |
| Arrondissement: | Laon |
| Canton: | Vic-sur-Aisne |
| Insee: | 02333 |
| Postal Code: | 02380 |
| Mayor: | Quentin Guilmont[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 49.5544°N 3.3706°W |
| Elevation M: | 186 |
| Elevation Min M: | 87 |
| Elevation Max M: | 205 |
| Area Km2: | 7.3 |
Fresnes-sous-Coucy (in French pronounced as /fʁɛn su kusi/), formerly called Fresnes until 22 December 2017,[2] is a commune in the Aisne department in Hauts-de-France in northern France.