欧亚多足蕨（学名：Polypodium vulgare）为水龙骨科多足蕨属下的一个种。

Polypodium vulgare, the common polypody, is a fern of the Polypodiaceae family. Polypodium vulgare is a tetraploid, believed to have arisen by chromosome doubling of a sterile diploid hybrid between two species which are not known in Europe. One of the parent species may be the North American Polypodium virginianum, or Polypodium glycyrrhiza. Biochemical data point to a species from eastern Asia as the second possible parent. The name is derived from poly (many) and pous, podos (a foot). Polypody has traditional uses in cooking for its aroma and sweet taste, and in herbal medicine as a purgative and vermifuge.