| Herbignac | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Herbignac (Loire-Atlantique).svg |
| Arrondissement: | Saint-Nazaire |
| Canton: | Guérande |
| Insee: | 44072 |
| Postal Code: | 44410 |
| Mayor: | Christelle Chassé[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Presqu'île de Guérande Atlantique |
| Coordinates: | 47.4497°N -2.3161°W |
| Elevation M: | 15 |
| Elevation Min M: | 0 |
| Elevation Max M: | 55 |
| Area Km2: | 71.43 |
Herbignac (in French pronounced as /ɛʁbiɲak/; Gallo: Èrbinyac, Breton: Erbigneg) is a commune in the Loire-Atlantique department in western France.