| Official Name: | Hesar-e Sangi |
| Native Name: | حصارسنگي |
| 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: | 275 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.1412°N 58.8298°W |
Hesar-e Sangi (Persian: حصارسنگي, also Romanized as Ḩeşār-e Sangī; also known as Ḩeşār and Hisār) 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 275, in 97 families.