Melastoma denticulatum is a species of flowering plant in the family Melastomataceae, native from the Solomon Islands to the south Pacific.
Melastoma denticulatum was first described by Jacques Labillardière in 1825. Its acceptance as a distinct species has varied. It is accepted by Plants of the World Online, . It has also been treated as a synonym of Melastoma malabathricum and Melastoma affine, and also as misapplied to Melastoma affine.