| Castets et Castillon | |
| Commune Status: | Commune |
| Arrondissement: | Langon |
| Canton: | Le Sud-Gironde |
| Insee: | 33106 |
| Postal Code: | 33120 |
| Intercommunality: | Sud Gironde |
| Coordinates: | 44.563°N -0.152°W |
| Area Km2: | 13.16 |
Castets et Castillon (Gascon: Castèths e Castilhon) is a commune in the department of Gironde, southwestern France. The municipality was established on 1 January 2017 by merger of the former communes of Castets-en-Dorthe (the seat) and Castillon-de-Castets.[1]