In an open letter to UN Secretary General Ban Ki-moon, the mayors of Kosovska Mitrovica, Zvecan, Zubin Potok and Leposavic say the Serb population in the region is subject to oppression, injustice and violence.
Ban Ki-moon is scheduled to visit Kosovo next week.
In their letter, the mayors say that as Serbian leaders, their lives and freedoms are in serious danger.
Ban Ki-moon today begins a visit to Slovenia and next week will be in Pristina, the first Secretary General of the United Nations to travel to the independent Kosovo.
Since the end of the war in the Balkans 13 years ago, more than a thousand Serbs in Kosovo have been killed and thousands of their homes destroyed or damaged, claim the mayors of the northern Serbian - the area of Kosovo where a majority of the Serbian population has rejected the sovereignty of Pristina.
Hundreds of thousands still possess weapons in violation of Resolution 1244 of UN Security Council, which required disarmament of the population, the mayors say. Therefore, concludes the letter, Ban Ki-moon's visit will provide an "excellent opportunity" to address their problems. As well as Slovenia, Serbia, and Kosovo, the UN secretary general is scheduled to will visit Croatia, Montenegro, Macedonia, and Bosnia-Herzegovina.