The Fortress of Zvečan, also known as Zvečan/Zveçan medieval fortress and Fortress of Mitrovica, located in the northwest of the city of North Mitrovica, in Kosovo, is an enormous castle and one of the oldest fortresses in Southeastern Europe. It was built on the top of the extinct volcano vent, overlooking the Ibar river. Zvečan Fortress was declared Monument of Culture of Exceptional Importance in 1990, and it was protected by the Republic of Serbia.

Zvečan or Zveçan is a town and municipality located in the Mitrovica District in Kosovo. As of 2015, it has a population of 16,650 inhabitants. It covers an area of 122 km2 (47 sq mi), and consists of a town and 35 villages.