艾草、艾叶或艾（学名：Artemisia argyi），是一种多年生草本植物，分布于亚洲及欧洲地区。

多年生草本，揉之有香气；叶子羽状分裂，背面有白丝绒毛；秋季开花，头状花序小而多，排成狭长总状花丛。

Artemisia argyi, the Chinese mugwort, is a herbaceous perennial plant with a creeping rhizome. It is native to China, Korea, Mongolia, Japan, and the Russian Far East (Amur Oblast, Primorye). It is known in Chinese as àicǎo (艾草) or ài yè (艾叶) and in Japanese as gaiyou. It is used in herbal medicine for conditions of the liver, spleen and kidney. It is a common flavoring and colorant in the Chinese dish qīng tuán (青团).