野牡丹属（学名：Melastoma）为野牡丹科下的一属。共约50个种，分布于东南亚、印度和澳大利亚。

Melastoma is a genus in the family Melastomataceae. It has about 50 species distributed around Southeast Asia, India, and Australia. It is undergoing taxonomic revision. Many species have been planted around the world for the aesthetic value of their bright purple flowers. Several have the capacity to become weedy, and have become noxious weeds in Hawaii and other areas.