| Cressy-Omencourt | |
| Commune Status: | Commune |
| Arrondissement: | Montdidier |
| Canton: | Roye |
| Insee: | 80224 |
| Postal Code: | 80190 |
| Mayor: | Olivier Depourcq[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Grand Roye |
| Coordinates: | 49.7278°N 2.9167°W |
| Elevation M: | 69 |
| Elevation Min M: | 67 |
| Elevation Max M: | 91 |
| Area Km2: | 7.67 |
Cressy-Omencourt (in French pronounced as /kʁesi ɔmɑ̃kuʁ/; Quèrsin-Omincourt) is a commune in the Somme department in Hauts-de-France in northern France.
Cressy-Omencourt is situated on the D227 and D15 crossroads, some 20miles southwest of Saint-Quentin.