| Colomby | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Colomby (Manche).svg |
| Arrondissement: | Cherbourg |
| Canton: | Bricquebec-en-Cotentin |
| Insee: | 50138 |
| Postal Code: | 50700 |
| Mayor: | Robert Lebreton[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Cotentin |
| Coordinates: | 49.4569°N -1.4919°W |
| Elevation M: | 24 |
| Elevation Min M: | 7 |
| Elevation Max M: | 44 |
| Area Km2: | 11.16 |
Colomby (in French pronounced as /kɔlɔ̃bi/) is a commune in the Manche department in Normandy in north-western France.