鼠曲草属（学名：Gnaphalium）是菊科下的一个属，为草本植物。该属共有约200种，分布于全球。

Gnaphalium is a genus of flowering plants in the sunflower family, commonly called cudweeds. They are widespread and common in temperate regions, although some are found on tropical mountains or in the subtropical regions of the world.

Cudweeds are important foodplants for American painted lady caterpillars.