臭常山（学名：Orixa japonica），为芸香科臭常山属下的一个种。

• 臭常山 Orixa japonica Thunb.. 中国植物物种信息数据库. [2013-01-15]. 

Orixa japonica, commonly called Japanese orixa, is a deciduous shrub growing to 3 metres (10 ft) with an equal spread. Native to Japan and South Korea, it is found on forested, sunny slopes at elevations from 500 to 1300 m. A recent scientific study found this plant to contain previously unknown alkaloids that may be effective against Plasmodium falciparum, one of the protozoan species that cause human malaria.