Grevillea metamorpha is a shrub of the genus Grevillea native to an area in the Mid West region of Western Australia. The erect and spindly shrub typically grows to a height of 1 to 2 metres (3 to 7 ft) and has non-glaucous branchlets. It has simple leaves with a blade that is 14 to 24 millimetres (0.6 to 0.9 in) in length and 8 to 15 mm (0.31 to 0.59 in). It blooms in September and produces a terminal raceme irregular inflorescence with white flowers. Later it forms smooth ellipsoidal glabrous fruit that is 9 to 10 mm (0.4 to 0.4 in) long.