Darkhan-Uul (Mongolian: Дархан-Уул, literally Blacksmith Mountain) is one of the 21 aimags (provinces) of Mongolia.

The city Darkhan was founded on 17 October 1961 within Selenge Province, as a second industrial center to reduce migration pressure on the capital, Ulaanbaatar.

[2] The Darkhan City was carved out of the Selenge Province in 1994 and was upgraded to Darkhan-Uul Province according to the Law on the Administrative Units of Mongolia and their Governance, which was passed through Parliament Resolution 32 of 1994.

Located at a low altitude, this area has a warmer climate than the rest of the country.

The Kharaa River basin offers favorable natural climatic conditions for the cultivation of cereals, vegetables, and especially potatoes.