Megophrys montana is a relatively large frog: males can reach in snout-vent length and females. As their common name suggests, these frogs have "horns": their upper eyelids have horn-like elongations.
Known with certainty only from Java and possibly from western Sumatra, Indonesia. Records of Megophrys montana outside this rangeapply to related named and unnamed species. They occur from near sea level up to at least. Megophrys montanalive on the forest floor in primary and secondary forests, and to some extent, plantations.