山棕（学名：Arenga engleri）为棕榈科桄榔属下的一个种。

Arenga engleri, or the ******* Palm, ****** Sugar Palm, Dwarf sugar palm, or ****** arenga palm, is a species of flowering plant in the Arecaceae family. The plant rarely grows more than 10 ft. tall, with a stem diameter of 6in. and a spread of 16 ft. The palm is native to ****** as well as Japan's Ryukyu Islands. The fruit of the palm is known to cause a severe allergic reaction.