Limnotrochus is a monotypic genus in the family Paludomidae containing the single species Limnotrochus thomsoni, a tropical freshwater snail with gills and an operculum, aquatic gastropod mollusk.

[1] The specific name thomsoni is in honor of explorer Joseph Thomson.

[3] Limnotrochus thomsoni is endemic to Lake Tanganyika and is found in all countries surrounding the lake: Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia.

[1] The type locality is Lake Tanganyika.

[4] Limnotrochus thomsoni lives in depths 4–30 m on silt and sandy bottoms of Lake Tanganyika.