Ottosonderia is a genus of flowering plants belonging to the family Aizoaceae.

[1] Its native range is the Cape Provinces in South Africa.

[1] The genus name of Ottosonderia is in honour of Otto Wilhelm Sonder (1812–1881), a German botanist and pharmacist.

[2] It was first described and published in Notes Mesembryanthemum Vol.3 on page 292 in 1958.

[1] According to Kew:[1]