Shangnan County () is a county in the east of Shaanxi province, China, bordering the provinces of Henan to the east and Hubei to the south. It is the easternmost county-level division of the prefecture-level city of Shangluo, and has an area of and a population of 230,000 as of 2004.
Shangnan County has 1 subdistrict and 8 towns.