Grevillea delta is a tree or shrub of the genus Grevillea native to a small area along the west coast on the Geraldton Sandplain in the Mid West region of Western Australia. The shrub typically grows to a height of 0.5 to 2 metres (2 to 7 ft) and has non-glaucous branchlets. It has simple leaves with a dissected blade that are 10 to 20 centimetres (4 to 8 in) in length and 0.8 to 1 mm (0.03 to 0.04 in) wide.