Mirbelia subcordata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia.

Mirbelia subcordata is an erect, spreading shrub that typically grows to a height of 20–40 cm (7.9–15.7 in) and has many branches.

The flowers are arranged in clusters at the ends of branches or in upper leaf axils, the sepals 5–6 mm (0.20–0.24 in) long.

[6] This mirbelia grows on a range of soils on slopes, rises and flats in the Avon Wheatbelt, Esperance Plains and Jarrah Forest bioregions of Western Australia.

Mirbelia subcordata is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.