Nazlu District (Persian: بخش نازلو) is a district (bakhsh) in Urmia County, West Azerbaijan Province, Iran. At the 2006 census, its population was 36,732, in 8,943 families. All of the district's population is Azerbaijanis. The District has one city: Nushin. The District has three rural districts (dehestan): Nazlu-e Shomali Rural District, Nazluchay Rural District, and Tala Tappeh Rural District.