| Longechaux | |
| Commune Status: | Commune |
| Coordinates: | 47.165°N 6.4303°W |
| Insee: | 25342 |
| Postal Code: | 25690 |
| Arrondissement: | Pontarlier |
| Canton: | Valdahon |
| Mayor: | Maurice Grosset[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 699 |
| Elevation Max M: | 820 |
| Area Km2: | 5.13 |
Longechaux (in French pronounced as /lɔ̃ʒʃo/) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.
The commune is 5km (03miles) from Vercel on a plateau near a forest.
Agriculture and the dairy industry remain the principal activities of the village.