| Castres-Gironde | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Castres-Gironde (Gironde).svg |
| Arrondissement: | Bordeaux |
| Canton: | La Brède |
| Insee: | 33109 |
| Postal Code: | 33640 |
| Mayor: | Gracia Perez[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Montesquieu |
| Coordinates: | 44.6972°N -0.4436°W |
| Elevation M: | 20 |
| Elevation Min M: | 3 |
| Elevation Max M: | 32 |
| Area Km2: | 6.97 |
Castres-Gironde (in French pronounced as /kastʁ ʒiʁɔ̃d/; Occitan (post 1500);: Castra) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.