city, west-central Fujian (Fukien) sheng (province), southeastern China. It is situated on the Sha River, a southern tributary of the Min River.

Yong'an was set up as a county in 1452 during the Ming dynasty. During the Sino-Japanese War (1937–45), Yong'an replaced Fuzhou as the temporary provincial capital after the latter city fell to the Japanese. It became a city in 1984.

The Min River provides the main southwest-to-northeast water route through central Fujian, and Yong'an is a natural route centre on the railway line from Jiangxi province via Nanping to Xiamen (Amoy). From Yong'an a network of highways radiates to Quanzhou on the coast northeast of Xiamen, to Longyan in southern Fujian, and southwestward through the mountains to eastern Guangdong province. Yong'an is the chief collection and distribution centre for a wide area, shipping large quantities of foodstuffs, timber, and forest products to Xiamen and to the north.

Rich with bamboo groves and forests, water resources, and coal, limestone, and other minerals, Yong'an's prosperity grew after the railway opened in 1956. However, for many years it was overshadowed by the emergence of Sanming, 25 miles (40 km) to the northeast, as an industrial city. More recently, Yong'an began to rapidly industrialize, with thermal power generation and the manufacture of cement and synthetic fibres as major components of the economy. Other manufactures include textiles, automobile parts, chemical fertilizers, and building materials. Taoyuan Caves and Linyin Stone Forest National Park, a karst feature some 9 miles (14 km) northeast of the city, preserves an area of unique karst-formation scenery in southeastern China and is a popular tourist destination. Pop. (2000) 190,456.