铁扫帚（学名：Lespedeza cuneata），又名千里光，为豆科胡枝子属下的一个种。

Lespedeza cuneata is a species of flowering plant in the legume family known by the common names Chinese bushclover and sericea lespedeza, or just sericea. It is native to Asia and eastern Australia and it is present elsewhere as an introduced species and sometimes an invasive plant.