| Lalande-en-Son | |
| Commune Status: | Commune |
| Arrondissement: | Beauvais |
| Canton: | Beauvais-2 |
| Insee: | 60343 |
| Postal Code: | 60590 |
| Mayor: | Christophe Duquenoy[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Bray |
| Coordinates: | 49.3919°N 1.7825°W |
| Elevation M: | 187 |
| Elevation Min M: | 83 |
| Elevation Max M: | 210 |
| Area Km2: | 5.99 |
Lalande-en-Son is a commune in the Oise department in northern France.