Kñzñltepe (; ; ) is a municipality and district of Mardin Province, Turkey. Its area is 1,236 km<sup>2</sup>, and its population is 267,151 (2022). It is mainly populated by Kurds of the Kîkan Kurdish tribe. Kñzñltepe is situated in Mardin Province within the broader Kurdish-majority region of southeastern Turkey. Demographic research has identified the Mardin region as having a predominantly Kurdish-speaking population, with Kurmanji (Northern Kurdish) as the principal spoken language. Kñzñltepe is predominantly inhabited by Kurds and is situated within Mardin Province, which demographic studies have consistently identified as a Kurdish-majority province with high concentrations of Kurmanji (Northern Kurdish) speakers.
In the local elections of March 2019 Nilüfer Elik Yñlmaz was elected as Mayor. But on 15 November 2019 she was dismissed and a trustee was appointed. The current District Governor is Hüseyin Cam, who was also appointed as the state appointed trustee.
The town has a historic 13th century great Friday mosque built by the Artuqids.
On 1 July 1915, during the 1915 genocide in Diyarbekir, there was a massacre in the village where its Christian population, the Assyrians were murdered by militia and Kurds. About seventy women were raped in the church, then put to death. Men, women, and children were killed indiscriminately and many victims were decapitated. After the massacre, Kurdish women stabbed any survivors to death. Rafael de Nogales visited weeks later and found "corpses barely covered with heaps of stone from which emerged here and there a bloody tress or an arm or leg gnawed on by hyenas".
In the late 1980s there existed a refugee camp for Kurds who fled persecution by Saddam Hussein.
It was also the scene of clashes between protesting Kurds and Turkish riot police in 2006. In Kiziltepe have been imposed curfews in the past.
The highest temperature ever recorded in Kñzñltepe is 49.6 ðC (121.28 ðF) on 25 July 2025.
There are 183 neighbourhoods in Kñzñltepe District. 10 of these (Atatürk, Bahçelievler, Cumhuriyet, Ersoylu, ðpek, Koçhisar, Sanayi, Tepebaà Âñ, Turgut ÃÂzal and Yeni Mahalle) formed the pre-2013 municipality of Kñzñltepe.