The United Nations Interim Administration Mission in Kosovo or UNMIK is the interim civilian administration in Kosovo, under the authority of the United Nations. The mission was established on June 10, 1999 by Security Council Resolution 1244.

The Assembly of Kosovo unanimously adopted the declaration of independence on 17 February 2008, however UN Resolution 1244 is still in force, which means that ultimate responsibility for the administration of Kosovo still falls on the Special Representative. It is likely that UNMIK will leave Kosovo sometime in 2008, once a new constitution is adopted .

The country is the subject of a long-running political and territorial dispute between the Serbian (and previously, the Yugoslav) government and Kosovo's largely ethnic-Albanian population. Whilst Serbia's claim to Kosovo is recognised by the some in the international community, a clear majority of the province's population support Kosovo's independence, together with a majority of European countries.

The head of UNMIK ithe Special Representative of the Secretary-General ('SRSG') and is appointed by the Secretary-General under the advice of UN member states. Joachim Rücker, a German diplomat, has been the SRSG since September 2006, replacing Steven Schook who served as acting-SRSG since the departure of Søren Jessen-Petersen in June 2006.