| Marcy-sous-Marle | |
| Commune Status: | Commune |
| Arrondissement: | Laon |
| Canton: | Marle |
| Insee: | 02460 |
| Postal Code: | 02250 |
| Mayor: | Christian Blain[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de la Serre |
| Coordinates: | 49.74°N 3.74°W |
| Elevation M: | 77 |
| Elevation Min M: | 72 |
| Elevation Max M: | 126 |
| Area Km2: | 4.39 |
Marcy-sous-Marle (in French pronounced as /maʁsi su maʁl/, literally Marcy under Marle) is a commune in the Aisne department in Hauts-de-France in northern France.