Persoonia trinervis is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia.

Flowering occurs from September to December and the fruit is a smooth, oval drupe.

[2][3][4][5] Persoonia trinervis was first formally described in 1856 by Carl Meissner in de Candolle's Prodromus Systematis Naturalis Regni Vegetabilis from specimens collected by James Drummond in the Swan River Colony.

[6][7] This geebung grows in heath and mallee woodland in the area between Mount Peron near Jurien Bay, Lake Grace, Frank Hann National Park and Watheroo in the south-west of Western Australia.

[3] Persoonia rufiflora is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.