Grevillea xiphoidea is a shrub of the genus Grevillea native to an ares in the Wheatbelt region of Western Australia. The erect shrub typically grows to a height of 1 to 3 metres (3.3 to 9.8 ft) and has glaucous branchlets. It has dissected tripartite leaves that are deeply divided to midvein. The leaves have a blade that is 25 to 45 millimetres (0.98 to 1.77 in). It blooms between June to September and produces an axillary or terminal raceme regular inflorescence with white or cream flowers with white or cream styles. Later it forms smooth, oblong or ellipsoidal, glabrous fruit that are 6 to 9 mm (0.2 to 0.4 in) long.