| Boissy-Mauvoisin | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Boissy-Mauvoisin 78.svg |
| Arrondissement: | Mantes-la-Jolie |
| Canton: | Bonnières-sur-Seine |
| Insee: | 78082 |
| Postal Code: | 78200 |
| Mayor: | Alain Gagne[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.963°N 1.578°W |
| Elevation M: | 127 |
| Elevation Min M: | 70 |
| Elevation Max M: | 163 |
| Area Km2: | 5.11 |
Boissy-Mauvoisin is a commune in the Yvelines department in north-central France.