| Official Name: | Bar Aftab-e Zirdu |
| Native Name: | برافتاب زيردو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Fars |
| Subdivision Type2: | County |
| Subdivision Name2: | Rostam |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Rostam-e Yek |
| Population As Of: | 2006 |
| Population Total: | 128 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 30.2658°N 51.4106°W |
Bar Aftab-e Zirdu (Persian: برافتاب زيردو, also Romanized as Bar Āftāb-e Zīrdū; also known as Bar Āftāb-e Bakhs) is a village in Rostam-e Yek Rural District, in the Central District of Rostam County, Fars Province, Iran. At the 2006 census, its population was 128, in 25 families.