| Official Name: | Shirag |
| Native Name: | شيرگ |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Birjand |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Fasharud |
| Population As Of: | 2016 |
| Population Total: | 79 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.2111°N 59.0903°W |
Shirag (Persian: شيرگ, also Romanized as Shīrag, Shīrīk, Sherk, Shīrak, and Shīrg; also known as Tak-e Borj) is a village in Fasharud Rural District, in the Central District of Birjand County, South Khorasan Province, Iran. At the 2016 census, its population was 79, in 31 families.