| Gellenoncourt | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Gellenoncourt 54.svg |
| Arrondissement: | Nancy |
| Canton: | Grand Couronné |
| Insee: | 54219 |
| Postal Code: | 54110 |
| Mayor: | Patrick Poirel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Seille et Grand Couronné |
| Coordinates: | 48.6786°N 6.3869°W |
| Elevation M: | 235 |
| Elevation Min M: | 217 |
| Elevation Max M: | 269 |
| Area Km2: | 3.61 |
Gellenoncourt (in French pronounced as /ʒɛlnɔ̃kuʁ/) is a commune in the Meurthe-et-Moselle department in north-eastern France.
The commune covers an area of 3.61 km2 (1.39 sq mi). Patrick Poirel is the mayor for the 2020-2026 tenure.