| Official Name: | Dizaj-e Hasan Beyg |
| Native Name: | ديزج حسن بيگ |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Ajab Shir |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Qaleh Chay |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dizajrud-e Sharqi |
| Population As Of: | 2006 |
| Population Total: | 615 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.5317°N 46.005°W |
Dizaj-e Hasan Beyg (Persian: ديزج حسن بيگ, also Romanized as Dīzaj-e Ḩasan Beyg) is a village in Dizajrud-e Sharqi Rural District, Qaleh Chay District, Ajab Shir County, East Azerbaijan Province, Iran. At the 2006 census, its population was 615, in 117 families.