Yong'an is a county-level city in west-central Fujian province, People's Republic of China. It is located on the Sha River, which is a tributary of the Min River. Formerly a county, Yong'an became a county-level city on September 12, 1984.

A county-level municipality, county-level city or county city, formerly known as prefecture-controlled city, is a county-level administrative division of the People's Republic of China. County-level cities have judicial but no legislative rights over their own local law and are usually governed by prefecture-level divisions, but a few are governed directly by province-level divisions.