Swainsona rostrata is a species of flowering plant in the family Fabaceae and is endemic to Central Australia.

It is a prostrate or low-growing annual or perennial plant with imparipinnate leaves with 7 to 9 egg-shaped leaflets with the narrower end towards the base, and racemes of usually up to 5 purple or cream-coloured flowers.

Swainsona rostrata is prostrate or low-growing annual or perennial plant that typically grows to a height of up to about 10 cm (3.9 in).

[2] Swainsona rostrata was first formally described in 1993 by Joy Thompson in the journal Telopea from specimens collected on the Burt Plain by Desmond Nelson in 1962.

[2][3] The specific epithet (rostrata) means "beaked",[4] referring to the shape of the keel.