| Grandfresnoy | |
| Commune Status: | Commune |
| Arrondissement: | Compiègne |
| Canton: | Estrées-Saint-Denis |
| Insee: | 60284 |
| Postal Code: | 60680 |
| Mayor: | Ivan Wasylyzyn[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Plaine d'Estrées |
| Coordinates: | 49.37°N 2.6556°W |
| Elevation M: | 82 |
| Elevation Min M: | 45 |
| Elevation Max M: | 131 |
| Area Km2: | 10.57 |
Grandfresnoy (pronounced as /fr/) is a commune in the Oise department in northern France.