Daviesia horrida, the prickly bitter-pea, is a species of flowering plant in the family Fabaceae, endemic to the south-west of Western Australia. It is a prickly shrub, growing to between 0.3 and 2 metres in height. The red and yellow pea flowers are produced between July and November in its native range. The species was first formally described by Swiss botanist Carl Meissner in Johann Georg Christian Lehmann's Plantae Preissianae in 1844.