The European Union Rule of Law Mission in Kosovo, EULEX Kosovo, is a deployment of European Union (EU) police and civilian resources to Kosovo. This Common Security and Defence Policy mission is the international civil presence in Kosovo operating under the umbrella of the United Nations Interim Administration Mission in Kosovo (UNMIK) established by United Nations Security Council Resolution 1244.

Serbia and a number of countries had initially strictly objected to the mission and supported UNMIK, demanding approval by the United Nations Security Council, which was rendered in late 2008. After signing a 5-point plan between Serbia and the UN, the UN SC approved the addition of the EULEX as an assistance mission subjected to the UNMIK, rather than outright replacing it, which would be technical in essence and not address the Kosovo status question, also rejected the Ahtisaari plan which the EULEX had originally supported.

The mission includes around 3,200 police and judicial personnel (1,950 international, 1,250 local), and began a four-month deployment process on 16 February 2008. In September 2012, the Kosovo Assembly voted to extend EULEX's to 2014. In April 2014, the Kosovo Assembly once again voted to extend EULEX's mandate, this time until June 2016.