Hengshan County (Chinese: 衡山县; pinyin: Héngshān Xiàn; lit.

'Mount Heng') is a county in the Province of Hunan, China and it is under the administration of Hengyang prefecture-level city.

The county of Hengshan covers 934 km2 (361 sq mi) with a population of 449,500 (as of 2015).

[2] The National Teacher's College was located in the county in the late 1940s.

[3] According to preliminary accounting of the statistical authority, the gross domestic product of Hengshan County in 2017 was 16,722 million yuan (2,477 million US dollars), up by 8.6 percent over the previous year.