| Official Name: | Dalilu |
| Native Name: | دليلو |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ardabil |
| Subdivision Type2: | County |
| Subdivision Name2: | Ardabil |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Hir |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Fuladlui Jonubi |
| Population As Of: | 2006 |
| Population Total: | 335 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 38.0333°N 48.45°W |
Dalilu (Persian: دليلو, also Romanized as Dalīlū; also known as Dalīlar and Valī Qolī Qeshlāqī) is a village in Fuladlui Jonubi Rural District, Hir District, Ardabil County, Ardabil Province, Iran. At the 2006 census, its population was 335, in 63 families.