Grevillea quinquenervis, also known as the Five-nerved grevillea, is a shrub of the genus Grevillea native to a small area on the western end of Kangaroo Island in South Australia. The erect dense shrub typically grows to a height of 1 to 1.5 metres (3.3 to 4.9 ft) and has angular and ridged branchlets. It has sublinear to oblong-elliptic or narrowly obovate leaves with a blade that is 15 to 60 millimetres (0.59 to 2.36 in) long and 1.5 to 8 mm (0.06 to 0.31 in) wide.