| Official Name: | Cornillon |
| Native Name: | Kòniyon |
| Settlement Type: | Commune |
| Pushpin Map: | Haiti |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Haiti |
| Subdivision Type: | Country |
| Subdivision Name: | Haiti |
| Subdivision Type1: | Department |
| Subdivision Name1: | Ouest |
| Subdivision Type2: | Arrondissement |
| Subdivision Name2: | Croix-des-Bouquets |
| Area Total Km2: | 223.34 |
| Population As Of: | 2009 |
| Population Footnotes: | [1] |
| Population Total: | 54,254 |
| Population Density Km2: | auto |
| Coordinates: | 18.6667°N -71.95°W |
Cornillon (pronounced as /fr/; Haitian; Haitian Creole: Kòniyon) is a commune in the Croix-des-Bouquets Arrondissement, in the Ouest department of Haiti. It has 54,254 inhabitants.[1]