| Saint-Grégoire-d'Ardennes | |
| Commune Status: | Commune |
| Arrondissement: | Jonzac |
| Canton: | Pons |
| Insee: | 17343 |
| Postal Code: | 17240 |
| Mayor: | Raymond Tessonneau[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Haute-Saintonge |
| Coordinates: | 45.5064°N -0.4939°W |
| Elevation M: | 25 |
| Elevation Min M: | 17 |
| Elevation Max M: | 60 |
| Area Km2: | 3.50 |
Saint-Grégoire-d'Ardennes (in French pronounced as /sɛ̃ ɡʁeɡwaʁ daʁdɛn/) is a commune in the Charente-Maritime department in southwestern France.