Derik (Syriac: ܖܪܝܟܐ Dêrike), (Dêrika Çiyayê Mazî in Kurdish) is a district of the Mardin Province in the southeastern Anatolia region of Turkey. It has borders with Mazıdağı, Viranşehir and Kızıltepe. The Assyrian/Syriac People formed once a majority in this district. Geographically the town includes areas from Mazıdağı foot descending towards Ceylanpınar plains. Town area descends from the north to the south. The city center is surrounded by mountains from 3 sides and has a temperate climate with some mediterranean climate effects.