Ugarchin Municipality (Bulgarian: Община Угърчин) is a municipality (obshtina) in Lovech Province, Central-North Bulgaria, located from the area of the so-called Fore-Balkan to the Danubian Plain.

It is named after its administrative centre - the town of Ugarchin.

The municipality embraces a territory of 523.10 km2 (201.97 sq mi) with a population of 7,181 inhabitants, as of December 2009.

[1] The following table shows the change of the population during the last four decades.

According to the latest Bulgarian census of 2011, the religious composition, among those who answered the optional question on religious identification, was the following: