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Anhui (安徽; formerly romanized as Anhwei) is a landlocked province of the People's Republic of China, part of the East China region. Its provincial capital and largest city is Hefei. The province is located across the basins of the Yangtze River and the Huai River, bordering Jiangsu to the east, Zhejiang to the southeast, Jiangxi to the south, Hubei to the southwest, Henan to the northwest, and Shandong for a short section in the north.

With a population of 63.65 million, Anhui is the 8th most populous province in China. It is the 22nd largest Chinese province based on area, and the 12th most densely-populated region of all 34 Chinese provincial regions. Anhui's population is mostly composed of Han Chinese. Languages spoken within the province include Jianghuai Mandarin, Wu, Hui, Gan and small portion of Zhongyuan Mandarin Chinese.

The name "Anhui" derives from the names of two cities: Anqing and Huizhou (now Huangshan City).The abbreviation for Anhui is "Chinese: 皖; pinyin: wǎn" after the historical State of Wan, Mount Wan, and the Wan river.

The administration of Anhui is composed of the provincial administrative system, led by the Governor, Provincial Congress, the People's Political Consultative Conference, and the Provincial Higher People's Court. Anhui is known as a province with political tradition in China's government system. Aside from managing provincial government departments, the provincial government manages 16 cities, 62 counties, 43 county-level districts and 1,522 townships.

The total GDP of Anhui Province ranked 11th among China's 31 provincial regions as of 2019.