Ulan or Wulan (Mongolian: ᠤᠯᠠᠭᠠᠨ ᠰᠢᠶᠠᠨ; Tibetan: དབུས་ལམ་རྫོང་།; Chinese: 乌兰县) is a county of Qinghai Province, China.

It is under the administration of Haixi Mongol and Tibetan Autonomous Prefecture.

The name of the county comes from a Mongolian word which means "red".

Other: Mohe Livestock Farm, Haixi Prefecture (海西州莫河畜牧场) The county is served by the Qinghai-Tibet Railway, which has a station at the county seat.

There is also a freight-only branch to the salt works on the Chaka Salt Lake near Chaka Town, in the southeastern part of the county.