| Castres | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Castres (Aisne).svg |
| Arrondissement: | Saint-Quentin |
| Canton: | Saint-Quentin-3 |
| Insee: | 02142 |
| Postal Code: | 02680 |
| Mayor: | Jean-Marie Accart[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Saint-Quentinois |
| Coordinates: | 49.8044°N 3.2383°W |
| Elevation M: | 80 |
| Elevation Min M: | 67 |
| Elevation Max M: | 104 |
| Area Km2: | 5.71 |
Castres (pronounced as /fr/) is a commune in the Aisne department in Hauts-de-France in northern France.