Monodonta is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.

The genus Monodonta was first separated from the Linnaean genus Trochus by Lamarck in 1801 with Trochus labio Linnaeus, 1758 given as the type species. Labio is a junior homonym of Labio Oken, 1815, itself a synonym of Monodonta Lamarck, 1799

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