| Weining County | |
| Native Name: | Chinese: 威宁县 · |
| Official Name: | Weining Yi, Hui and Miao Autonomous County |
| Postal Code Type: | Postal code |
| Postal Code: | 553100 |
| Settlement Type: | Autonomous county |
| Pushpin Map: | Guizhou#Southwest China |
| Pushpin Label: | Weining |
| Pushpin Map Caption: | Location of the seat in Guizhou |
| Subdivision Type: | Country |
| Subdivision Name: | China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Guizhou |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Bijie |
| Seat Type: | County seat |
| Seat: | Haibian Subdistrict |
| Area Total Km2: | 9296 |
| Population Total: | 1280116 |
| Population As Of: | 2020 census |
| Population Density Km2: | auto |
| Population Footnotes: | [1] |
| Coor Pinpoint: | Weining County government |
| Coordinates: | 26.8739°N 104.2528°W |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Weining Yi, Hui and Miao Autonomous County (; Xiao'erjing:) is a county of Guizhou, China. It is under the administration of the prefecture-level city of Bijie.Notable attractions include Majie Ethnic Yi Village (Chinese: 马街彝族村寨), the historic site of Shimenkan church (Chinese: 石门坎教堂) and Caohai Lake nature reserve. In the early 20th century, the village of Shimenkan was known as the Overseas Heaven and a sacred civilized area due to the contributions by Rev. Sam Pollard, a British Methodist missionary.
Weining is divided into 4 subdistricts, 30 towns, 4 townships and 1 ethnic township:[2]
Weining has a subtropical highland climate (Köppen Cwb). The monthly 24-hour mean temperature ranges from 2.6°C in January to 18°C in July, and the annual mean is 11.1°C. Over two-thirds of the annual rainfall occurs from June to September.
Weining is served by the G7611 Duyun–Shangri-La Expressway, the Weining–Xuanwei Expressway, the Bijie–Weining Expressway, China National Highway 326 and by the Neijiang-Liupanshui Railway. Weining Caohai Airport is under construction.