| Gahard | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Gahard (Ille-et-Vilaine).svg |
| Coordinates: | 48.2975°N -1.5181°W |
| Insee: | 35118 |
| Postal Code: | 35490 |
| Arrondissement: | Rennes |
| Canton: | Val-Couesnon |
| Mayor: | Isabelle Lavastre[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 45 |
| Elevation Max M: | 112 |
| Area Km2: | 24.96 |
Gahard (in French pronounced as /ɡa.aʁ/; ; Gallo: Gahard) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Inhabitants of Gahard are called Gahardais in French.