Harmsiodoxa is a genus of flowering plants belonging to the family Brassicaceae. It is native to Australia. The genus name of Harmsiodoxa is in honour of Hermann Harms (1870–1942), a German taxonomist and botanist. It was first described and published in H.G.A.Engler (ed.), Pflanzenr., IV, 105(86) on page 260 in 1924. Known species, according to Kew: * (F.Muell.) O.E.Schulz * O.E.Schulz * E.A.Shaw