| Laigny | |
| Commune Status: | Commune |
| Arrondissement: | Vervins |
| Canton: | Vervins |
| Insee: | 02401 |
| Postal Code: | 02140 |
| Mayor: | Yves Moularde[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Thiérache du Centre |
| Coordinates: | 49.8589°N 3.8539°W |
| Elevation M: | 100 |
| Elevation Min M: | 140 |
| Elevation Max M: | 204 |
| Area Km2: | 10.83 |
Laigny (in French pronounced as /lɛɲi/) is a commune in the Aisne department in Hauts-de-France in northern France.