大明竹属（学名：Pleioblastus），又名古竹属，是禾本科下的一个属，为小乔木或灌木状竹。该属共有约20余种，分布于东亚。

Pleioblastus is a, East Asian genus of monopodial bamboos in the grass family. They are native to China and Japan, and naturalized in scattered places in Korea, Europe, New Zealand, and the Western Hemisphere.

The plant spreads by vigorous underground rhizomes which run along just beneath the soil surface, producing plantlets at the nodes. These can be used to propagate new plants, but if not removed they can become invasive.