变叶木属（学名：Codiaeum）是大戟科下的一个属，为灌木或小乔木植物。该属共有15种，分布于马来西亚、太平洋群岛和澳大利亚北部。

Codiaeum is a genus of plants under the family Euphorbiaceae first described as a genus in 1824. It is native to insular Southeast Asia, northern Australia and Papuasia.

They are shrubs with leathery leaves and often confused with the genus Croton. Some species, especially Codiaeum variegatum, are cultivated as houseplants.