Wangmo County (simplified Chinese: 望谟县; traditional Chinese: 望謨縣; pinyin: Wàngmó Xiàn) (Bouyei: Weangzmox xianq) is a county in the southwest of Guizhou province, China, bordering Guangxi to the southeast. It is under the administration of the Qianxinan Buyei and Miao Autonomous Prefecture.

Wangmo County is divided into 4 subdistricts, 11 towns and 1 ethnic township:

Wangmo recorded 122.5 millimetres (4.82 inches) of rainfall in one hour, on 9 June 2011, the most rainfall in the county in 200 years. And on 20 June 2011, 312 mm (12.28 in) of rain fell in 3hrs in the county as part of significant flooding across the region.