Mučanj, Mountain summit in western Serbia.

Mučanj is a mountain in southwestern Serbia, east of Mount Murtenica and west of Ivanjica, near the village of Katći. Its highest point is Jerinin grad, also called Klekov Vrh, at 1,534 metres. The peak is recognisable from the main road below by its karst shape and the rocks that form Jerinin grad.

The mountain's name comes from the Serbian word for effort, muka, because Saint Sava is said to have climbed it with difficulty. The highest peak, Jerinin grad, is named after Jerina, a figure in Serbian folk tradition. A spring called Savina voda on the mountain is linked to the saint.

The name Mučanj is tied to a local tradition about Saint Sava, who is said to have climbed the peak with difficulty (muka). The spring Savina voda on the mountain is named after him, and the highest point is called Jerinin grad.

Trails to the summit start from nearby villages and are marked, offering routes of varying difficulty for different skill levels. Bring sturdy footwear and plenty of water, as the climb demands physical effort and endurance.

The name Mučanj comes from the Serbian word for hardship, muka: tradition holds that Saint Sava struggled up the peak, and a spring called Savina voda on the mountain is named after him. The summit itself is called Jerinin grad, after a fortified site.