| Official Name: | Qeshlaq-e Seyf Khanlu-ye Yek |
| Native Name: | قشلاق سيف خانلو1 |
| Settlement Type: | village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ardabil |
| Subdivision Type2: | County |
| Subdivision Name2: | Parsabad |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Aslan Duz |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Aslan Duz |
| Population As Of: | 2006 |
| Population Total: | 249 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Qeshlaq-e Seyf Khanlu-ye Yek (Persian: قشلاق سيف خانلو1, also Romanized as Qeshlāq-e Seyf Khānlū-ye Yek) is a village in Aslan Duz Rural District, Aslan Duz District, Parsabad County, Ardabil Province, Iran. At the 2006 census, its population was 249, in 45 families.