| Official Name: | Darreh-ye Ghazan-e Sofla |
| Native Name: | دره گزان سفلي |
| 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: | Alqurat |
| Population As Of: | 2006 |
| Population Total: | 70 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.1069°N 59.2433°W |
Darreh-ye Ghazan-e Sofla (Persian: دره گزان سفلي, also Romanized as Darreh-ye Ghazān-e Soflá; also known as Darreh-ye Ghazān, Gazān, Darreh Gazān Pā’īn, Darreh-i-Gazān, and Darreh Jazān) is a village in Alqurat Rural District, in the Central District of Birjand County, South Khorasan Province, Iran. At the 2006 census, its population was 70, in 33 families.