| Launois-sur-Vence | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Launois-sur-Vence.svg |
| Arrondissement: | Charleville-Mézières |
| Canton: | Signy-l'Abbaye |
| Insee: | 08248 |
| Postal Code: | 08430 |
| Mayor: | Janick Lombard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Crêtes Préardennaises |
| Coordinates: | 49.6539°N 4.5386°W |
| Elevation M: | 207 |
| Area Km2: | 13.37 |
Launois-sur-Vence (in French pronounced as /lonwa syʁ vɑ̃s/) is a commune in the Ardennes department in northern France.