Orkhon () is a sum (district) of Darkhan-Uul Province in northern Mongolia. In 2009, its population was 3,185., being the northernmost district in the Darkhan-Uul Province.
At the 2009 population census, Orkhon was the least populated city in the Darkhan-Uul Province with a estimated population of 3,185
The district is divided into two bags, which are: