| Vadencourt | |
| Commune Status: | Commune |
| Arrondissement: | Vervins |
| Canton: | Guise |
| Insee: | 02757 |
| Postal Code: | 02120 |
| Mayor: | Patrick Mariage[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Thiérache Sambre et Oise |
| Coordinates: | 49.93°N 3.5797°W |
| Elevation M: | 88 |
| Elevation Min M: | 82 |
| Elevation Max M: | 152 |
| Area Km2: | 12.24 |
Vadencourt (in French pronounced as /vadɑ̃kuʁ/) is a commune in the Aisne department in Hauts-de-France in northern France.