Qiandongnan Miao and Dong Autonomous Prefecture (Chinese: 黔东南苗族侗族自治州; pinyin: Qiándōngnán Miáozú Dòngzú Zìzhìzhōu; Hmu language: Qeef Dongb Naif Dol Hmub Dol Gud Zid Zid Zeb; Kam language: Qeens Donc Nanc Nyenc Miiul Nyenc Gaeml Zil Zil Zous),[4] also known as Southeast Qian Autonomous Prefecture of Miao and Dong and shortened as S.E.

Qian Prefecture (Qeens Donc Nanc Zous), is an autonomous prefecture in the southeast of Guizhou province in the People's Republic of China, bordering Hunan to the east and Guangxi to the south.

There are 33 ethnic groups living in the territory, including Miao, Dong, Han, Buyi, Shui, Yao, Zhuang, and Tujia.

According to the seventh census data in China, as of 00:00 on November 1, 2020, the resident population of Qiandongnan Miao and Dong Autonomous Prefecture was 3,758,622.

81.3% of the huji population were ethnic minorities: 43.2% were Miao and 30.4% were Dong.