Stenanthemum patens is a species of flowering plant in the family Rhamnaceae and is endemic to the inland of Western Australia.

Stenanthemum patens is a shrub that typically grows to a height of up to 50 cm (20 in), its young stems densely hairy and with a few spines.

[2][3] Stenanthemum patens was first formally described in 2001 by Barbara Lynette Rye in the journal Nuytsia from specimens collected in 1981.

It is only found in a few locations about 70 km (43 mi) north of Leonora in the Murchison bioregion of inland Western Australia.

[2][3][5] Stenanthemum patens is listed as "Priority One" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[5] meaning that it is known from only one or a few locations which are potentially at risk.