Leucopogon squarrosus is a species of flowering plant in the heath family Ericaceae and is endemic to the southwest of Western Australia.

Flowering occurs from February to October and the fruit is an elliptic or oval drupe 1.3–1.9 mm (0.051–0.075 in) long.

[2][3] Leucopogon squarrosus was first formally described in 1837 by George Bentham in 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 by Charles von Hügel in the Swan River Colony.

[5][6] In 2012, Michael Hislop described two subspecies of L. squarrosus in the journal Nuytsia and the names are accepted by the Australian Plant Census:[2] Subspecies squarrosus grows in heathland in the understorey of Banksia woodland or in winter-wet heath between the southern suburbs of Perth to near Gingin in the Jarrah Forest and Swan Coastal Plain bioregions of south-western Western Australia.

[10] Leucopogon squarrosus is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions,[3] but subsp.