Kharkhorin (Mongolian: Хархорин) is a town and sum (district) center in Övörkhangai Province in Mongolia.

The location marks the easternmost foothills of the Khangai Mountains, where they meet the rolling steppe of central Mongolia.

Nearby are the ruins of the ancient town of Karakorum (also known as Kharkhorum or Qara Qorum) which, for a short time, served as the capital of the Mongol Empire under Ogedei Khan.

The important Paleolithic archaeological site of Moiltyn-am is located near the bridge over the Orkhon River, just west of the settlement.

Water from the Orkhon River serves to irrigate crops on the large plain east of the town.