Kozjak (Macedonian: Козјакⓘ) is a mountain situated on the border between North Macedonia and Serbia. It is situated north-east from Kumanovo. The tallest peak of Kozjak is Virovi at 1284 meters.[1] The region is also known as Kozjačija [mk] (Козјачија). The river Pčinja flows along the western edge of the mountain.