Rhopalocarpus coriaceus is a tree in the family Sphaerosepalaceae. It is endemic to Madagascar.
Rhopalocarpus coriaceus is known from populations along the east coast of Madagascar, specifically in the regions of Sava, Alaotra Mangoro, Atsimo-Atsinanana, Analanjirofo and Anosy. Its habitat is coastal forests from sea-level to 500m (1,600feet) altitude. Some populations are within protected areas.
Rhopalocarpus coriaceus is threatened by shifting patterns of agriculture. Because the species is used as timber, subsistence harvesting is also a threat.