| Official Name: | Niaz Sui |
| Native Name: | نيازسويي |
| 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: | Shaban |
| Population As Of: | 2006 |
| Population Total: | 115 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 38.3592°N 47.4494°W |
Niaz Sui (Persian: نيازسويي, also Romanized as Nīāz Sū’ī) is a village in Shaban Rural District, in the Central District of Meshgin Shahr County, Ardabil Province, Iran. At the 2006 census, its population was 115, in 26 families.