Bossiaea saxosa is a species of flowering plant in the family Fabaceae and is endemic to a restricted area near Norseman, Western Australia.

It is an erect, intricately branched shrub with many slightly flattened, sharply-pointed cladodes and deep yellow, red and lemon-yellow, pea-like flowers.

Bossiaea saxosa is an erect, intricately-branched shrub that typically grows up to 1.5 m (4 ft 11 in) high and wide with hairy young growth.

[2][3] Bossiaea saxosa was first formally described in 1994 by James Henderson Ross in the journal Muelleria from specimens he collected near Norseman in 2000.

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