狭叶马鞭草（学名：Verbena brasiliensis）为马鞭草科马鞭草属下的一个种。

"Brazilian verbena" and "Brazilian vervain" redirect here. See also below for a common misapplication of those names.

Verbena brasiliensis, the Brazilian verbena or Brazilian vervain, is a flowering plant species from the vervain family (Verbenaceae). It is native to parts of South America, namely Brazil, but has spread its range in recent times and has occasionally become an invasive weed.