Grevillea newbeyi is a shrub which is endemic to the south west region of Western Australia. It grows to between 0.5 and 1.5 metres in height. The pink to red and cream flowers usually appear from June to December in the species native range.The species was first formally described by Donald McGillivray in 1986, his description published in New Names in Grevillea (Proteaceae). It is similar in appearance to G. patentiloba and G. tripartita.