| Buchelay | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Buchelay (Yvelines).svg |
| Arrondissement: | Mantes-la-Jolie |
| Canton: | Mantes-la-Jolie |
| Insee: | 78118 |
| Postal Code: | 78200 |
| Mayor: | Stéphane Tremblay[1] [2] |
| Term: | 2023 - 2026 |
| Intercommunality: | CU Grand Paris Seine et Oise |
| Coordinates: | 48.98°N 1.673°W |
| Elevation M: | 59 |
| Elevation Min M: | 26 |
| Elevation Max M: | 128 |
| Area Km2: | 4.94 |
Buchelay (pronounced as /fr/) is a commune in the Yvelines department in the Île-de-France region in north-central France.