多茎鼠曲草（学名：Gnaphalium polycaulon）为菊科鼠曲草属下的一个种。

Gnaphalium polycaulon, the many stem cudweed, is a plant species in the sunflower family. It is widespread across much of Mesoamerica, South America, and the West Indies, and naturalized in parts of Asia and Africa.

Gnaphalium polycaulon is a small annual herb up to 25 cm (9.8 in) tall, with several erect to ascending branches. Stems, leaves and phyllaries are covered with a dense coat of woolly hairs, giving the plant a whitish appearance. Leaves are narrowly linear, up to 4.5 cm (1.8 in) long. Flower heads are born in tight, elongated array. Each head contains numerous florets, mostly yellowish but sometimes with purple tips