| Official Name: | Hajjilu |
| Native Name: | حاجيلو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ardabil |
| Subdivision Type2: | County |
| Subdivision Name2: | Meshgin Shahr |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Meshgin-e Sharqi |
| Population As Of: | 2006 |
| Population Total: | 230 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 38.5222°N 47.6525°W |
Hajjilu (Persian: حاجيلو, also Romanized as Ḩājjīlū; also known as Chājīlū, Jajehloo, Jājīlū, Khojeli, Khvājeh ‘Alī, and Khvojehlī) is a village in Meshgin-e Sharqi Rural District, in the Central District of Meshgin Shahr County, Ardabil Province, Iran. At the 2006 census, its population was 230, in 52 families.