Henan Mongol Autonomous County is an autonomous county in the south of Huangnan Tibetan Autonomous Prefecture in the province of Qinghai, China, bordering Gansu Province to the south and east.

Its administrative seat ("capital") is the town of Yêgainnyin (Youganning).

Henan has an area of 6,250 km2 (2,410 sq mi) and approximately 30,000 inhabitants (2004).

The Mongols or Upper Mongols (Sogwo Arig), the overwhelming majority of the inhabitants of the county, do not speak Mongolian (with relatively few exceptions) and speak primarily Standard Chinese and Tibetan.

Henan County is made up of 2 towns and 4 townships: This Qinghai location article is a stub.