| Official Name: | Kalu |
| Native Name: | كلو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Varzaqan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Kharvana |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dizmar-e Markazi |
| Population As Of: | 2006 |
| Population Total: | 77 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 38.7011°N 46.3089°W |
Kalu (Persian: كلو, also Romanized as Kalū, Kaloo, and Kalow; also known as Chalow, Chelou, Chelow, Chelū, Chilov, and Chīlowv) is a village in Dizmar-e Markazi Rural District, Kharvana District, Varzaqan County, East Azerbaijan Province, Iran. At the 2006 census, its population was 77, in 24 families.