| Lachaussée-du-Bois-d'Écu | |
| Commune Status: | Commune |
| Arrondissement: | Beauvais |
| Canton: | Saint-Just-en-Chaussée |
| Insee: | 60336 |
| Postal Code: | 60480 |
| Mayor: | Bruno Gruel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Beauvaisis |
| Coordinates: | 49.5597°N 2.1742°W |
| Elevation M: | 155 |
| Elevation Min M: | 142 |
| Elevation Max M: | 172 |
| Area Km2: | 5.92 |
Lachaussée-du-Bois-d'Écu (in French pronounced as /laʃose dy bwa deky/) is a commune in the Oise department in northern France.