| Dallon | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Dallon (Aisne).svg |
| Arrondissement: | Saint-Quentin |
| Canton: | Ribemont |
| Insee: | 02257 |
| Postal Code: | 02680 |
| Mayor: | Gérard Felbacq[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Saint-Quentinois |
| Coordinates: | 49.8219°N 3.2422°W |
| Elevation M: | 106 |
| Elevation Min M: | 67 |
| Elevation Max M: | 121 |
| Area Km2: | 5.81 |
Dallon (in French pronounced as /dalɔ̃/) is a commune in the Aisne department in Hauts-de-France in northern France.
It is located on the banks of the Somme and its marshes, and the canal Saint-Quentin. Its former name is Dalonaie, on record in the year 1035.