Grevillea linsmithii is a spreading shrub that typically grows to a height of. Its leaves are oblong, mostly long and wide, the lower surface covered with shaggy hairs. The flowers are arranged on the ends of branches and hang downwards mostly in groups of two to four on a rachis usually long. The flowers are orange-pink to bright red with a greyish pink, gently curved style, the pistil long. Flowering occurs from March to November and the fruit is a elliptic follicle long.