Nogoonnuur (, green lake) is a sum (district) of Bayan-ÃÂlgii Province in western Mongolia. It is primarily inhabited by ethnic Kazakhs. As of 2014 it had a population of 6003 people.
The district was established in 1952.
The district is divided into 12 bags, which are:
The district consists of three protected areas, which are Selhemiin B region, Achit Lake area and Devel area.
Part of the potentially valuable Asgat Ag-Sb deposit is within Nogoonnuur where the Asgat mine is situated on the border with Russia. Livestock is another major economic sector in the district with total livestock amounted 230,000.
The district has a total of 689 water wells, in which 410 of them are for drinking.