| Official Name: | Hiaq |
| Native Name: | هيق |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Heris |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Khvajeh |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Mavazekhan-e Shomali |
| Population As Of: | 2006 |
| Population Total: | 238 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 38.3375°N 46.6739°W |
Hiaq (Persian: هيق, also Romanized as Hīaq, and Hīyaq; also known as Īvā and Iya) is a village in Mavazekhan-e Shomali Rural District, Khvajeh District, Heris County, East Azerbaijan Province, Iran. At the 2006 census, its population was 238, in 53 families.