Willdenowia incurvata is a species of flowering plant in the genus Willdenowia endemic to the Fynbos region of the Northern Cape and Western Cape.

[1] It is also known as the sonqua sunreed; or sonkwasriet in Afrikaans.

[3] Willdenowia incurvata is found from False Bay in the Western Cape to Springbok in Namaqualand, in the Northern Cape.

[1] It is dominant in the sandveld between Melkbos and the Olifants River, from sea level to the 1 200 m altitude range.

[3] Willdenowia incurvata is classified as Least Concern as it is widely distributed, with a stable population.