柳二十斑金花虫（学名：Chrysomela vigintipunctata）为金花虫科金花虫属下的一个种。

Chrysomela vigintipunctata or spotted willow leaf beetle (Russian: Двадцатиточечный листоед — translated as The 20 spots leaf eater) is a species of broad-shouldered leaf beetles belonging to the family Chrysomelidae, subfamily Chrysomelinae.

Length of the beetles vary from 6.5 to 9.2 mm. Both larvae and adults feed on the leaves of its host plants, especially Salicaceae species. Elytra usually are yellowish-green, with 10 black spots on each side, while the head and the pronotum are black, with yellow sides.