珍珠菜（学名：Clethra barbinervis）是山柳科的一种落叶小高木，高约3-7米。叶为椭圆形。夏季开白色五瓣花。果实为蒴果。珍珠菜广泛分布在东亚的山林地区，其叶可食用，曾是饥荒时的救急蔬菜。

Clethra is a genus of flowering shrubs or small trees described as a genus by Linnaeus in 1753.

Clethra is one of two genera in the family Clethraceae (the other being Purdiaea). The species may be evergreen or deciduous, and all bear flowers in clusters (inflorescences).