Racosperma abruptum (Maiden & Blakely) Pedley Acacia abrupta is a species of flowering plant in the family Fabaceae and is endemic to arid parts of central and western Australia.

[3][4][5][6][7] Acacia abrupta was first formally described in 1927 by the botanists Joseph Maiden and William Blakely in the Journal of the Royal Society of Western Australia from specimens collected by Richard Helms on a sandplain in the Great Victoria Desert, during the Elder Scientific Exploring Expedition in 1891.

[8][9] The specific epithet (abrupta) means "broken off", referring to the abrupt tip of the phyllodes.

[10] This species is closely related to A. ascendens, and can be mistaken for A. helmsiana which shares the same habitat.

[3][4][5] This species is native to central Western Australia and the south-west of the Northern Territory where it is found on sand dunes, sandplains and gravelly hillslopes growing in red sandy lateritic based soils.