硬叶葱草（学名：Xyris complanata）为黄眼草科黄眼草属下的一个种。

Xyris complanata, known as the feathered yellow-eye is a tufted herb in the Xyridaceae family. It is native to southern China, India, Sri Lanka, Thailand, Cambodia, Laos, Vietnam, Malaysia, Indonesia (Java, Sulawesi, Kalimantan, Sumatra), the Philippines, New Guinea and Australia (New South Wales, Queensland, Northern Territory and Western Australia). It is also naturalized in Hawaii where it is known as Hawai'i yelloweyed grass. In New South Wales it grows in moist areas, often near swamps or in heathland.