| Official Name: | kasil |
| Native Name: | کسيل |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Alborz |
| Subdivision Type2: | County |
| Subdivision Name2: | Karaj |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Asara |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Nesa |
| Population As Of: | 2006 |
| Population Total: | 188 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 36.0283°N 51.33°W |
Kasil (Persian: کسيل, also Romanized as kasīl and Kasīl) is a village in Nesa Rural District, Asara District, Karaj County, Alborz Province, Iran.
At the 2006 census, its population was 188, in 59 families.