Hengshan (), also known as Mount Heng, is a mountain in southcentral China's Hunan Province known as the southern mountain () of the Five Great Mountains of China. Heng Shan is a mountain range long with 72 peaks and lies at . The Huiyan Peak is the south end of the peaks, Yuelu Mountain in Changsha City is the north end, and the Zhurong Peak is the highest at above sea level.
At the foot of the mountain stands the largest temple in southern China, the Grand Temple of Mount Heng (Nanyue Damiao), which is the largest group of ancient buildings in Hunan Province.
Other notable sites in the area include Shangfeng Temple, Fuyan Temple, Zhusheng Temple (8th-century Buddhist monastery) and Zhurong Gong, a small stone temple.