山罗花属（学名：Melampyrum）是玄参科下的一个属，为一年生、直立、半寄生草本植物。该属共有约35种，分布于北温带。

Melampyrum is a genus of about 20 species of herbaceous flowering plants in the family Orobanchaceae known commonly as cow wheat. They are native to temperate regions of the Northern Hemisphere. They are hemiparasites on other plants, obtaining water and nutrients from host plants, though they are able to survive on their own without parasitising other plants.