Erdemli is a town and district of Mersin Province in the Mediterranean region of Turkey, 35 km (22 mi) west of the city of Mersin.

The district extends from the Mediterranean coastal plain, the largest agricultural area in Mersin Province, to high in the Taurus Mountains where there is forest, and then a large area (half the land area of the district) is high mountain above the treeline.

Erdemli is a quiet rural district where the people are conservative, and is traditionally a stronghold of Turkish nationalist politicians; however some departments of Mersin University are opening branches here which will surely have an effect on the cultural and social life of Erdemli in the future. There is no industry except some hand-weaving of rugs so the local economy depends on agriculture. The coastal plain is covered with citrus fruits, bananas, and all kinds of fruits and vegetables grown year-round in open fields or in greenhouses. High meadows in the mountains are planted with grain pulses and fruits such as apples, peaches, and cherries. At these altitudes there are also vineyards, olive groves, and fig trees.