Ottosonderia is a genus of belonging to the family Aizoaceae.
Its native range is the Cape Provinces in South Africa.
The genus name of Ottosonderia is in honour of Otto Wilhelm Sonder (1812–1881), a German botanist and pharmacist.Lotte Burkhardt (2025). 9783946292265, Botanic Garden and Botanical Museum, Freie Universität Berlin. . ISBN 9783946292265 It was first described and published in Notes Mesembryanthemum Vol.3 on page 292 in 1958.