Grevillea evanescens is an endangered species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia.

It is an erect to spreading shrub with oblong to elliptic leaves and clusters of pale to bright red and cream-coloured flowers.

[5] The specific epithet (evanescens) means "disappearing", referring to the hairs on the lower leaf surface.

[6] This grevillea grows in sandy soil in Banksia woodland near Gingin, in the Swan Coastal Plain biogeographic region of south-western Western Australia.

[7] The species has a severely fragmented range due to habitat clearance for agriculture, housing and road development.