| Halsou | |
| Native Name: | Haltsu |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason fr ville Halsou.svg |
| Arrondissement: | Bayonne |
| Canton: | Baïgura et Mondarrain |
| Insee: | 64255 |
| Postal Code: | 64480 |
| Mayor: | Philippe Masse[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Pays Basque |
| Coordinates: | 43.3756°N -1.4214°W |
| Elevation M: | 62 |
| Elevation Min M: | 4 |
| Elevation Max M: | 156 |
| Area Km2: | 5.08 |
Halsou (Basque: Haltsu; Basque: Haltsu)[2] is a commune in the Pyrénées-Atlantiques department in south-western France. Halsou-Larressore station has rail connections to Saint-Jean-Pied-de-Port, Cambo-les-Bains and Bayonne. The town's mayor is Philippe Masse, elected in 2020.[3]