42°34′10″N 23°17′29″E / 42.56944°N 23.29139°E / 42.56944; 23.29139Golyam Rezen (Bulgarian: Голям Резен / ‘Big Slice’) is a peak on Vitosha Mountain in Bulgaria.
Rising to 2,277 m, the peak is second to the mountain's summit Cherni Vrah situated 900 m to the west.
Golyam Rezen hosts an Air Traffic Services facility, as well as military communications installations.
The precipitous east slopes of the peak are a popular rock climbing site, overlooking Bistritsa River Valley in Bistrishko Branishte Biosphere Reserve.
In winter, Golyam Rezen is also reached by a chair lift serving the Vitoshko Lale ski run descending from near the peak's summit down to Dervishka Bachiya site (1,500 m) in the valley of Yanchevska River, a tributary of Vitoshka Bistritsa River.