| Saint-Genis-d'Hiersac | |
| Commune Status: | Commune |
| Arrondissement: | Cognac |
| Canton: | Val de Nouère |
| Insee: | 16320 |
| Postal Code: | 16570 |
| Mayor: | Stéphanie Roturier[1] |
| Term: | 2022 - 2026 |
| Intercommunality: | Rouillacais |
| Coordinates: | 45.7508°N 0.0294°W |
| Elevation M: | 250 |
| Elevation Min M: | 41 |
| Elevation Max M: | 147 |
| Area Km2: | 19.08 |
Saint-Genis-d'Hiersac (in French pronounced as /sɛ̃ ʒəni djɛʁsak/, literally Saint-Genis of Hiersac) is a commune in the Charente department in southwestern France.