白羊草（学名：Bothriochloa ischaemum）是一种禾本科植物。这种植物遍布于中国暖温带地区。白羊草在苏联、美国及印度等国家的暖温带区均有分布。

Bothriochloa ischaemum is a species of perennial grass in the family Poaceae, found throughout much of the world. Two varieties are recognized, of which Bothriochloa ischaemum var. ischaemum is native to Europe, Asia, and Africa and naturalized elsewhere, and var. songarica is native to Asia and naturalized elsewhere. Var. songarica is an invasive weed in Texas, where it is known as "King Ranch bluestem"; it has displaced native grasses in large areas of central and south Texas.