Longquan is a county-level city in China, located on the upper reaches of the Ou River in southwestern Zhejiang Province. It is administered by the prefecture-level city of Lishui and lies near the border with Fujian Province to the southwest.
Formerly a county, Longquan was later reorganized as a county-level city. Its position on the upper Ou River places it within the mountainous terrain of southwestern Zhejiang, close to the provincial boundary with Fujian.