| Chambost-Longessaigne | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Chambost-Longessaigne (Rhône).svg |
| Arrondissement: | Lyon |
| Canton: | L'Arbresle |
| Insee: | 69038 |
| Postal Code: | 69770 |
| Mayor: | Marie-Luce Arnoux[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Monts du Lyonnais |
| Coordinates: | 45.7736°N 4.3697°W |
| Elevation M: | 600 |
| Elevation Min M: | 477 |
| Elevation Max M: | 681 |
| Area Km2: | 15.44 |
Chambost-Longessaigne is a commune in the Rhône department in eastern France.