山油柑属（学名：Acronychia）为芸香科的一属，乔木植物。共44种，分布于热带亚洲和大洋洲。降真香（A. pedunculata）产于中国，可入药。

Acronychia is a genus of 44 species of plants, mainly shrubs, in the rue family Rutaceae. They have a broad distribution covering China, Southeast Asia, India, Malaysia, Indonesia, Australia and the islands of the western Pacific Ocean.

Like all members of the Rutaceae, the plants contain aromatic oils and the leaves are aromatic when crushed.