| Official Name: | Bash Kahriz |
| Native Name: | باش كهريز |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | West Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Showt |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Qarah Quyun |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Qarah Quyun-e Jonubi |
| Population As Of: | 2006 |
| Population Total: | 764 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 39.0653°N 44.8992°W |
Bash Kahriz (fa|باش كهريز, also Romanized as Bāsh Kahrīz) is a village in Qarah Quyun-e Jonubi Rural District, Qarah Quyun District, Showt County, West Azerbaijan Province, Iran. At the 2006 census, its population was 764, in 170 families.