| Official Name: | Hajj Qeshlaq |
| Native Name: | حاج قشلاق |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Zanjan |
| Subdivision Type2: | County |
| Subdivision Name2: | Ijrud |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Halab |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Ijrud-e Pain |
| Population As Of: | 2006 |
| Population Total: | 166 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 36.2997°N 47.9619°W |
Hajj Qeshlaq (Persian: حاج قشلاق, also Romanized as Ḩājj Qeshlāq; also known as Hāj, Ḩājī Qeshlāq, Ḩājjī Qeshlāq, and Hāz Qishlāq) is a village in Ijrud-e Pain Rural District, Halab District, Ijrud County, Zanjan Province, Iran. At the 2006 census, its population was 166, in 35 families.