| Longcochon | |
| Commune Status: | Commune |
| Coordinates: | 46.775°N 6.0706°W |
| Insee: | 39298 |
| Postal Code: | 39250 |
| Arrondissement: | Lons-le-Saunier |
| Canton: | Saint-Laurent-en-Grandvaux |
| Mayor: | Thierry David[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 758 |
| Elevation Max M: | 886 |
| Area Km2: | 3.64 |
Longcochon (in French pronounced as /lɔ̃kɔʃɔ̃/) is a commune in the Jura department in Bourgogne-Franche-Comté in eastern France.[2]