普通蓼（学名：Polygonum humifusum）为蓼科蓼属下的一个种。

Polygonum humifusum is an Asian and North American species of plants in the buckwheat family. It grows in arctic and subarctic regions of eastern Russia, Mongolia, northeastern China, Alaska, and Canada (Yukon, Northwest Territory, Nunavut, British Columbia, northern Ontario).