Grevillea uncinulata is a shrub of the genus Grevillea native to an area in the Wheatbelt and Goldfields-Esperance regions of Western Australia. The erect open shrub typically grows to a height of 0.3 to 1 metre (1.0 to 3.3 ft) and has non-glaucous branchlets. It has simple undissected flat linear leaves with a blade that is 5 to 20 millimetres (0.20 to 0.79 in) in length and 1 mm (0.04 in) wide. It blooms between May and September and produces an axillary or terminal raceme irregular inflorescence with white or cream flowers with white or cream styles. Later it forms ridged or ribbed oblong or ellipsoidal hairy fruit that are 8 to 13 mm (0.3 to 0.5 in) long.