海南三七（学名：Kaempferia rotunda）为姜科山柰属下的一个种。

Kaempferia rotunda is a plant species in the ginger family. It is native to China (Guangdong, Guangxi, Hainan, ******, Yunnan), India, Nepal, Assam, Bangladesh, Indochina, and widely cultivated elsewhere. It is reportedly naturalized in Java, Malaysia and Costa Rica.