Grevillea erinacea is a shrub of the genus Grevillea native to a small area in the Mid West region of Western Australia. The spindly, prickly shrub typically grows to a height of 0.6 to 1.8 metres (2 to 6 ft) has few branches and has non-glaucous branchlets. It has simple leaves with an undissected blade that are 10 to 30 millimetres (0.39 to 1.18 in) in length and 0.5 to 1 mm (0.02 to 0.04 in) wide. It blooms from July to December and produces an inflorescence with green or white or green flowers.