Mazıdağı (Kurdish: Şemrex) is a district of Mardin Province of Turkey. Kurdish people form a majority in this district. Kurdish tribes inhabited in its mountains. The population of the district is 28,000 while 12,000 of it lives in the city center.
Mazıdağı region is very rich in phosphat mines which can bring significant change to the region and Turkish economy. The district dominated by sunni Muslims of followers of Sufi orders. Many kurdish inhabitants moved to the provinces center such as Diyarbekir, Mardin and Batman due to poverty and civil war between PKK-Turkish armed forces. The municipality of towns elections won by Hasip Aktas a member of Democratic Society Party with %57 of all votes in 2009 which reprassant kurds in Turkish political system and local administration.