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

[2][4] The specific epithet (pungens) means 'ending in a sharp, hard point',[5] referring to the long, pungent branchlets.

[2] This species of Jacksonia grows in tall shrubland on sandy soil or laterite and is only known from remnant populations south of Marchagee in the Avon Wheatbelt and Geraldton Sandplains bioregions of south-western Western Australia.

[2][3] Jacksonia pungens is listed as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and as "Threatened Flora (Declared Rare Flora — Extant)" by the by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.

The main threats to the species are road and rail maintenance, damage caused by vehicles and farming activities.