| Official Name: | Qazqan Darreh |
| Native Name: | قزقان دره |
| Settlement Type: | village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Razavi Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Dargaz |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Lotfabad |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dibaj |
| Population As Of: | 2006 |
| Population Total: | 343 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
Qazqan Darreh (fa|قزقان دره, also Romanized as Qazqān Darreh) is a village in Dibaj Rural District, Lotfabad District, Dargaz County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 343, in 57 families.