Grevillea trifida is a shrub of the genus Grevillea native to an area in the South West and Great Southern regions of Western Australia. The spreading spiny shrub typically grows to a height of 0.5 to 1.5 metres (1.6 to 4.9 ft) and has non-glaucous branchlets. It has simple dissected tripartite leaves with a blade that is 20 to 100 millimetres (0.79 to 3.94 in) in length. It blooms between July and November and produces an axillary or terminal raceme irregular inflorescence with white or cream flowers and white to cream styles. Later it forms wrinkled oblong or ellipsoidal glabrous fruit that are 7 to 10 mm (0.3 to 0.4 in) long.