Astylosternus nganhanus is a species of frog in the family Arthroleptidae.

The top of arms and fore-arms have large, raised black bumps.

[3] Astylosternus nganhanus occurs along watercourses in a few narrow gallery forests, and in seepage areas in the nearby grassland, at elevations of 1,400–1,700 m (4,600–5,600 ft) above sea level.

Tadpoles probably belonging to this species have been found in rock pools in streams.

[1] This species, known from only a single population, is probably at severe risk from habitat loss caused by smallholder farming activities and subsistence wood extraction.