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

It is a spiny shrub with narrowly linear leaves and yellow, orange and reddish-brown flowers.

Mirbelia spinosa is a spiny shrub that typically grows to a height of 0.2–1.5 m (7.9 in – 4 ft 11.1 in) and has erect or wand-like branches.

The leaves are narrowly linear, less than 12 mm (0.47 in) long with the edges rolled under, and clustered around rigid thorns.

[2][3] This species was first formally described in 1837 by George Bentham who gave it the name Dichosema spinosum in Stephan Endlicher's Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hügel from specimens collected at King George Sound.