| Buironfosse | |
| Commune Status: | Commune |
| Arrondissement: | Vervins |
| Canton: | Vervins |
| Insee: | 02135 |
| Postal Code: | 02620 |
| Mayor: | Marie-Anne Wattier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Thiérache du Centre |
| Coordinates: | 49.9661°N 3.8353°W |
| Elevation M: | 215 |
| Elevation Min M: | 173 |
| Elevation Max M: | 222 |
| Area Km2: | 17.6 |
Buironfosse (in French pronounced as /bɥiʁɔ̃fos/) is a commune in the department of Aisne in Hauts-de-France in northern France.
In 1339 the French and English armies, engaged in the Hundred Years War, formed battle lines near Buironfosse, and then did not fight.