龙竹（学名：Dendrocalamus giganteus）为禾本科牡竹属下的一个种。

Dendrocalamus giganteus, also known as dragon bamboo or one of several species called giant bamboo, is a giant tropical and subtropical, dense-clumping species native to Southeast Asia. It is one of the largest bamboo species in the world.

A very tall, large-culmed, grayish-green bamboo, it grows in clumps consisting of a large number of closely growing culms, and reaches a height of 30-40 m. Under favorable conditions, it can grow up to 40cm per day. It is cultivated at low and high altitudes, commonly along river banks, and in home gardens. It is found in Bangladesh, India, Sri Lanka, and Southeast Asian countries such as Indonesia, Myanmar, and Thailand.