Jinlan Reservoir (simplified Chinese: 金兰水库; traditional Chinese: 金蘭水庫; pinyin: Jīnlán Shuǐkù), also known as Jinlantang Reservoir (simplified Chinese: 金兰汤水库; traditional Chinese: 金蘭湯水庫), is a large reservoir located in Langya Town of Jinhua, Zhejiang, China.

The reservoir is the source of the Baisha Stream, a tributary of Jinhua River.

With an area of 270 square kilometres (67,000 acres), the reservoir has a capacity of 68,000,000 cubic metres (18×10^9 US gal).

[1][2] Construction of Jinlan Reservoir, designed by the local government, commenced in April 1958 and was completed in September 1960.

[2] Jinlan Reservoir belongs to the first grade water source protection area (一级水源保护区) and is part of Jinhua's water supply network.