| Cottenchy | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Cottenchy 80.svg |
| Arrondissement: | Montdidier |
| Canton: | Ailly-sur-Noye |
| Insee: | 80213 |
| Postal Code: | 80440 |
| Mayor: | Jérémy Gawlik[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Avre Luce Noye |
| Coordinates: | 49.81°N 2.3833°W |
| Elevation M: | 40 |
| Elevation Min M: | 31 |
| Elevation Max M: | 112 |
| Area Km2: | 10.73 |
Cottenchy (in French pronounced as /kɔtɑ̃ʃi/; Cotinchy) is a commune in the Somme department in Hauts-de-France in northern France.
Cottenchy is situated on the D75 and D116 crossroads, on the banks of the river Noye, some 8miles southeast of Amiens.