Monodonta labio, common name the toothed top shell or the lipped periwinkle, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

[1] This species occurs in the Indian Ocean off Madagascar and the Mascarene basin and in the Western Pacific and off the Philippines and commonly seen in Hong Kong near tide line.

The shell is heavy and coarse with rough, grained surface with moderate sutures between rounded whorls.

The shell shows a rounded keel (a spiral ridge marking a change of slope) and an umbilicus sealed with a callus.

This marine species occurs over a wide range in Central and East Indian Ocean, Indo-China, Indo-Malaysian Oceania, the Philippines; the Persian Gulf, West Indian Ocean to Micronesia, Western Pacific, Micronesia and Australia (Northern Territory, Queensland, Western Australia) This snail lives on or under rocks and coral in the lower intertidal zone.