| Derchigny | |
| Image Coat Of Arms: | Blason Derchigny.svg |
| Arrondissement: | Dieppe |
| Canton: | Dieppe-2 |
| Insee: | 76215 |
| Postal Code: | 76370 |
| Commune: | Petit-Caux |
| Coordinates: | 49.9386°N 1.1886°W |
| Elevation M: | 100 |
| Elevation Min M: | 40 |
| Elevation Max M: | 116 |
| Area Km2: | 4.75 |
| Population: | 590 |
| Population Date: | 2022 |
| Population Footnotes: | [1] |
Derchigny is a former commune in the Seine-Maritime department in the Normandy region in north-western France. On 1 January 2016, it was merged into the new commune of Petit-Caux.[2] The local name is Derchigny-Graincourt as the commune resulted from the merger of two former communes, Derchigny and Graincourt, in 1822.
A farming village situated in the Pays de Caux, some 5miles east of Dieppe, at the junction of the D 54 and the D 925 roads.