| Official Name: | Yagh Bastlu |
| Native Name: | ياغ بستلو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Ahar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Owch Hacha |
| Population As Of: | 2006 |
| Population Total: | 85 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 38.505°N 47.0514°W |
Yagh Bastlu (fa|ياغ بستلو, also Romanized as Yāgh Bastlū; also known as Bā‘bastlū) is a village in Owch Hacha Rural District, in the Central District of Ahar County, East Azerbaijan Province, Iran. At the 2006 census, its population was 85, in 17 families. The village is populated by the Kurdish Chalabianlu tribe.[1]