| Colonfay | |
| Commune Status: | Commune |
| Arrondissement: | Vervins |
| Canton: | Marle |
| Insee: | 02206 |
| Postal Code: | 02120 |
| Mayor: | Michel Bourgeois[1] |
| Term: | 2024 - 2026 |
| Intercommunality: | Thiérache du Centre |
| Coordinates: | 49.8589°N 3.7133°W |
| Elevation M: | 169 |
| Elevation Min M: | 135 |
| Elevation Max M: | 162 |
| Area Km2: | 3.29 |
Colonfay (pronounced as /fr/) is a commune in the Aisne department in Hauts-de-France in northern France.