Ugarchin is a town located along the Kamenitsa river in the Lovech Province in central northern Bulgaria. It is the administrative centre of the homonymous Ugarchin Municipality. The town is about 30 kilometers away in the west from the main centre of the province - Lovech. As of December 2009, it has a population of 2,832 inhabitants.
Ugarchin is situated in the northern part of the Balkan Mountains at the foot the high peaks and down the river Kamenitsa and its minor tributaries: Lepetora, Sveta, Greshki Dol and others. It is situated in a basin rounded with small hills: Ivan Dyal hill to the south; Visokata Mogila (Chukara) to the east; to the north are Beli Kamak, Sredno Bardo and Zabiti Kamak hills; and to the west are Goli Rat and Chukata.