| Official Name: | Hasanak Dar |
| Native Name: | حسن كدر |
| 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: | 875 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 36.0675°N 51.3081°W |
Hasanak Dar (fa|حسن كدر, also Romanized as Ḩasanak Dar) is a village in Nesa Rural District, Asara District, Karaj County, Alborz Province, Iran. At the 2006 census, its population was 875, in 224 families.