Rudnik (Serbian Cyrillic: Рудник, pronounced [rûːdniːk]) is a mountain in central Serbia, near the town of Gornji Milanovac.

Its highest peak Cvijićev vrh, named after geologist and biologist Jovan Cvijić, has an elevation of 1,132 meters above sea level.

The archaeological site of Belovode on the Rudnik mountain contains the world's oldest reliably dated evidence of copper smelting at high temperature, from 5,000 BCE.

The rich mineral resources of the mountain (silver, lead and copper) were an important source of wealth to the Serbian rulers.

Besides mining, Rudnik was a settlement with developed handicrafts and a thriving trading post with a cosmopolitan population that influenced the whole of Serbia.

[6][7] In 1398, rebellious vojvoda Novak Belockrvić [sr], who tried to oust ruling prince Stefan Lazarević, fled to the fortress.

It separates the flotation reservoir from the valley of the Despotovica river, which flows through the town of Gornji Milanovac (8 km (5.0 mi) downstream), and from the Ibar Highway.

The tailings is a result of 264,000 tons of ore which is being treated yearly in the mine: lead, zinc, copper and traces of silver.

It is made of magmatic rocks, chiefly quartz latite and dacite (andesite), suitable for masonry and road building.

The peak is today a barren rocky ground, partially covered with shrubs, thorny bushes and rare grassy patches.

Volcanic activity was present during the entire geological history of the region, until it stopped in the late Tertiary, around 2 million years ago.

Remains of this activity is the whole array of igneous rocks found in central Serbia: andesite, dacite, trachyte, rhyolite, peridotite, granite, gabbro, pegmatite, basalt, diabase, etc.

On the rocky slopes there are habitats of purple saxifrage, and some Balkan-Carpathian endemic plants, like Reichenbach's yellow iris and certain species of chickweed.