| La Grigonnais | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Arrondissement: | Châteaubriant-Ancenis |
| Canton: | Guémené-Penfao |
| Insee: | 44224 |
| Postal Code: | 44170 |
| Mayor: | Gwénaël Crahès[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC de Nozay |
| Coordinates: | 47.5272°N -1.6661°W |
| Elevation Min M: | 20 |
| Elevation Max M: | 82 |
| Area Km2: | 21.22 |
La Grigonnais (in French pronounced as /la ɡʁiɡɔnɛ/; Gallo: La Gergonàe, Breton: Kerrigon) is a commune in the Loire-Atlantique department in western France.