Kosovo, Kyustendil Province

Kosovo () is a village in Treklyano municipality, Kyustendil Province, Bulgaria, located at . The village is in a mountainous area, five kilometers away from the border of Serbia.
Kosovo was first mentioned in 1576 as "Kosova". The name is derived from the Bulgarian word for blackbird, "kos" (кос). There is a legend that the village was founded by refugees from the region of Kosovo, which is also likely.