Daviesia oppositifolia, commonly known as rattle-pea, is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect shrub with many stems, egg-shaped phyllodes with the narrower end towards the base, and yellow flowers with maroon markings.Rattle-pea grows in forest with Eucalyptus species and mainly occurs in the Stirling Range but is also found near Denmark and Cheyne Beach, in the Esperance Plains and Jarrah Forest biogeographic regions of south-western Western Australia.
Daviesia oppositifolia is listed in the following regions: