| Saint-Christaud | |
| Commune Status: | Commune |
| Arrondissement: | Mirande |
| Canton: | Pardiac-Rivière-Basse |
| Insee: | 32367 |
| Postal Code: | 32320 |
| Mayor: | Claude Desangles[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Cœur d'Astarac en Gascogne |
| Coordinates: | 43.5308°N 0.2639°W |
| Elevation M: | 200 |
| Elevation Min M: | 169 |
| Elevation Max M: | 291 |
| Area Km2: | 11 |
Saint-Christaud (in French pronounced as /sɛ̃ kʁisto/; Occitan (post 1500);: Sent Cristau) is a commune in the Gers department in southwestern France.