| Longchaumois | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Longchaumois.svg |
| Coordinates: | 46.4614°N 5.9333°W |
| Insee: | 39297 |
| Postal Code: | 39400 |
| Arrondissement: | Saint-Claude |
| Canton: | Hauts de Bienne |
| Mayor: | Yann Bondier-Moret[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 470 |
| Elevation Max M: | 1411 |
| Area Km2: | 57.60 |
Longchaumois (in French pronounced as /lɔ̃ʃomwa/) is a commune in the Jura department in Bourgogne-Franche-Comté in eastern France.[2]