| Gagnières | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Gagnières (30).svg |
| Arrondissement: | Alès |
| Canton: | Rousson |
| Insee: | 30120 |
| Postal Code: | 30160 |
| Mayor: | Olivier Martin[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 44.3072°N 4.13°W |
| Elevation M: | 192 |
| Elevation Min M: | 159 |
| Elevation Max M: | 516 |
| Area Km2: | 11.22 |
Gagnières (pronounced as /fr/; oc|Castilhon de Ganhièira) is a commune in the Gard department in southern France.