Sharga () is a sum (district) of Govi-Altai Province in western Mongolia. The area has one of the last two populations of the Mongolian saiga antelope (Saiga tatarica mongolica), which is protected in Sharga Nature Reserve. In 2009, its population was 1,921.
The ruins of Chinqai Balgasun have been discovered in this area.
The district is divided into four bags, which are: