| Signy-l'Abbaye | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Signy-l'Abbaye.svg |
| Arrondissement: | Charleville-Mézières |
| Canton: | Signy-l'Abbaye |
| Insee: | 08419 |
| Postal Code: | 08460 |
| Mayor: | Jean-Paul Dosière[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Crêtes Préardennaises |
| Coordinates: | 49.6983°N 4.4211°W |
| Elevation M: | 155 |
| Area Km2: | 62.03 |
Signy-l'Abbaye (in French pronounced as /siɲi labe.i/) is a commune in the department of Ardennes, in the north-eastern French region of Grand Est.
The river Vaux, a small tributary of the Aisne, flows through the commune.