| Longueval-Barbonval | |
| Arrondissement: | Soissons |
| Canton: | Braine |
| Insee: | 02439 |
| Postal Code: | 02160 |
| Commune: | Les Septvallons |
| Coordinates: | 49.36°N 3.6533°W |
| Elevation M: | 90 |
| Elevation Min M: | 58 |
| Elevation Max M: | 180 |
| Area Km2: | 8.73 |
| Population: | 494 |
| Population Date: | 2021 |
| Population Footnotes: | [1] |
Longueval-Barbonval (in French pronounced as /lɔ̃ɡval baʁbɔ̃val/) is a former commune in the department of Aisne in northern France. On 1 January 2016, it was merged into the new commune Les Septvallons.[2]