| Official Name: | Qul Hajji |
| Native Name: | قول حاجي |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Golestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Gonbad-e Qabus |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Fajr |
| Population As Of: | 2006 |
| Population Total: | 1,160 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.1836°N 55.1953°W |
Qul Hajji (Persian: قول حاجي, also Romanized as Qūl Ḩājjī; also known as Qolhaji) is a village in Fajr Rural District, in the Central District of Gonbad-e Qabus County, Golestan Province, Iran. At the 2006 census, its population was 1,160, in 252 families.