Leucopogon stenophyllus is a species of flowering plant in the heath family Ericaceae and is endemic to the south-west of Western Australia.

Flowering occurs in many months and the fruit is a narrowly elliptic drupe 2.5–3.0 mm (0.098–0.118 in) long.

[2] Leucopogon stenophyllus was first formally described in 2016 by Michael Clyde Hislop in the journal Nuytsia from specimens collected in the Minyulo Nature Reserve near Cataby in 2007.

[2] This leucopogon grows in heath and low woodland in shallow sand and occurs from Lake Indoon near Eneabba to near Cataby in the Geraldton Sandplains and Swan Coastal Plain bioregions of south-western Western Australia.

[2][4] Leucopogon stenophyllus is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.