| Grandlup-et-Fay | |
| Commune Status: | Commune |
| Arrondissement: | Laon |
| Canton: | Marle |
| Insee: | 02353 |
| Postal Code: | 02350 |
| Mayor: | Christian Vuilliot[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de la Serre |
| Coordinates: | 49.6583°N 3.7378°W |
| Elevation M: | 84 |
| Elevation Min M: | 63 |
| Elevation Max M: | 101 |
| Area Km2: | 20.3 |
Grandlup-et-Fay is a commune in the Aisne department in Hauts-de-France in northern France.