Mankhan Nature Reserve is a reserve in the eastern part of Mongolia. It is located south of Khar Us Nuur National Park in Khovd Province on the main road betwenn Hovd City and Ulaanbaatar. Most of the area lies in the Mankhan sum. The reserve streches over 3.000 sqkm and has been created in 1993 together with Sharga Nature Reserve to protect the endangered Mongolian saiga. In addition to these antelopes, there are also goitered gazelles.