| Gâvres | |
| Native Name: | Gavr |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Gâvres (Morbihan).svg |
| Coordinates: | 47.6897°N -3.3542°W |
| Insee: | 56062 |
| Postal Code: | 56680 |
| Arrondissement: | Lorient |
| Canton: | Pluvigner |
| Mayor: | Christian Carton[1] |
| Term: | 2024 - 2026 |
| Intercommunality: | Lorient Agglomération |
| Elevation Min M: | 0 |
| Elevation Max M: | 10 |
| Area Km2: | 1.88 |
Gâvres (in French pronounced as /ɡavʁ/;) is a commune in the Morbihan department of Brittany in north-western France.[2] French Navy Minister Hyde de Neuville chose this place as a military testing area in 1829 for heavy marine ordnance.[3] The extensive experiments performed at sea have later provided part of the data upon which Hugoniot's theory is based.
Inhabitants of Gâvres are called in French Gâvrais.