水竹（学名：Phyllostachys heteroclada）为禾本科刚竹属下的一个种。

Phyllostachys heteroclada, the fishscale bamboo, also known as "water bamboo", is a running bamboo. The water bamboo name comes from the air canals in the rhizomes and roots that allow this bamboo to grow in more saturated conditions as compared to similar species. This species can also have abrupt kinks at the base of the culms. Maximum height can reach 35+' with a diameter of 2". Cold hardy to around -5F. Grows well in USDA zone 6b-10.