Daviesia trigonophylla is a species of flowering plant in the family Fabaceae and is endemic to the south of Western Australia.

It is an erect, bushy shrub with elliptic or egg-shaped phyllodes that are triangular in cross-section, and orange, dark red and maroon flowers.

Daviesia trigonophylla is an erect, bushy shrub that typically grows to a height of up to 1 m (3 ft 3 in) and has winged branchlets.

[6] This daviesia usually grows in mallee in the Stirling Range and nearby coastal areas in the Avon Wheatbelt, Esperance Plains and Jarrah Forest bioregions of southern Western Australia.

[2][3] Daviesia trigonophylla is classified as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.