千屈菜属（学名：Lythrum）是千屈菜科下的一个属，为一年生或多年生草本植物。该属共有约35种，分布于全球。

Lythrum is a genus of 38 species of flowering plants native to the temperate world. Commonly known as loosestrife (a name they share with Lysimachia, which are not closely related). They are among 32 genera of the family Lythraceae.