Dumasia is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae.

Dumasia villosa is a South African indigenous species from the Eastern Cape, KwaZulu-Natal, Limpopo, Mpumalanga and North West Provinces. Dumasia villosa is a charming twining herb with three roundish leaflets. During summer it bears yellow flowers that are pouched at the base. These are followed by densely hairy pods that split to reveal dark blue seeds.