| Gratreuil | |
| Commune Status: | Commune |
| Arrondissement: | Châlons-en-Champagne |
| Canton: | Argonne Suippe et Vesle |
| Insee: | 51280 |
| Postal Code: | 51800 |
| Mayor: | Hubert Roth[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Argonne Champenoise |
| Coordinates: | 49.2469°N 4.6975°W |
| Elevation M: | 108 |
| Area Km2: | 4.77 |
Gratreuil (in French pronounced as /ɡʁatʁœj/) is a commune in the Marne department in north-eastern France.