Zhenning Buyei and Miao Autonomous County (simplified Chinese: 镇宁布依族苗族自治县; traditional Chinese: 鎮寧布依族苗族自治縣; pinyin: Zhènníng Bùyīzú Miáozú Zìzhìxiàn; usually referred to as "Zhenning County", commonly abbreviated as Zhenning (镇宁县; 鎮寧縣; Zhènníng Xiàn); Buyei: Zenqninf Buxqyaix Buxyeeuz Ziqziqxianq) is an autonomous county under the administration of the prefecture-level city of Anshun, in the southwest of Guizhou Province, China.

In 233, in the 11th year of Jianxing period of Shu Han (221–263), the county under the control of Puli Dazong (普里大宗).

In 1351, in the 11th year of Zhizheng period of the Yuan dynasty (1271–1368), Hehong Prefecture was renamed "Zhenning Zhou" (镇宁州) and belonged to Puding Circuit (普定路).

In 1385, in the ruling of Hongwu Emperor of the Ming dynasty (1368–1644), Zhenning came under the jurisdiction of Sichuan Buzhengshisi (四川布政使司).

In 1671, in the reign of Kangxi Emperor of the Qing dynasty (1644–1911), Zhenning became an independent "Zhou" and under the administration of Anshun Prefecture (安顺府).

The highest point in Zhenning Buyei and Miao Autonomous County is Maocaopo (茅草坡; 'Thatched Slope') which stands 1,678 metres (5,505 ft) above sea level.

[5] As of 2019, the National Bureau of Statistics of the People's Republic of China estimates the county's population now to be 287,300.

Zhensheng Expressway Tourism and related services are still developing in Zhenning Buyei and Miao Autonomous County.