Longquan is a county-level city in Zhejiang Province, China, administered by the prefecture-level city of Lishui. It lies in the southwestern part of the province, on the upper reaches of the Ou River, and borders Fujian province to the southwest. It was formerly a county before being upgraded to county-level city status.
The city sits in a mountainous part of southwestern Zhejiang, a region where the Ou River system drains toward the coast. Its position on the upper Ou River and its border with Fujian give it a role as a link between Zhejiang and the neighboring province to the south.
Longquan is best known historically for its celadon ceramics, commonly called Longquan ware, which have been produced in the area since the Song dynasty and remain one of its most distinctive local traditions. The city also gives its name to Longquan swords, a style of Chinese bladed weapon associated with the locality.