黑面神属（学名：Breynia）是大戟科下的一个属，为灌木或小乔木植物。该属共有25种，分布于印度、马来西亚。

Breynia is a plant genus in the family Phyllanthaceae, first described as a genus in 1776. It is native to Southeast Asia, China, the Indian Subcontinent, Papuasia, Australia, and the island of Réunion.

The name Breynia is a conserved name, in other words, it is recognized despite the existence of an earlier use of the same name to refer to a different plant. Breynia L. 1753 is in the Capparaceae, but it is a rejected name. We here discuss Breynia J.R.Forst. & G.Forst. 1776.