| Official Name: | Hajji Babay-e Sofla |
| Native Name: | حاجي باباي سفلي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | West Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Takab |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Ansar |
| Population As Of: | 2006 |
| Population Total: | 173 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.3711°N 47.1319°W |
Hajji Babay-e Sofla (fa|حاجي باباي سفلي, also Romanized as Ḩājjī Bābāy-e Soflá; also known as Ḩājjī Bābā-ye Soflá) is a village in Ansar Rural District, in the Central District of Takab County, West Azerbaijan Province, Iran. At the 2006 census, its population was 173, in 45 families.