| Official Name: | Posht Tang-e Khushab |
| Native Name: | پشت تنگ خوشاب |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Lorestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Pol-e Dokhtar |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Miyankuh-e Gharbi |
| Population As Of: | 2006 |
| Population Total: | 16 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.15°N 47.95°W |
Posht Tang-e Khushab (Persian: پشت تنگ خوشاب, also Romanized as Posht Tang-e Khūshāb) is a village in Miyankuh-e Gharbi Rural District, in the Central District of Pol-e Dokhtar County, Lorestan Province, Iran. At the 2006 census, its population was 16, in 6 families.