Grevillea subtiliflora is a shrub of the genus Grevillea native to an area in the Wheatbelt region of Western Australia.<ref name=FB>{{FloraBase|name=Grevillea subtiliflora|id=2100}}</ref> The erect to spreading shrub typically grows to a height of and has non-glaucous branchlets. It has simple, dissected leaves with a blade that is . It blooms between July and October and produces a terminal raceme irregular inflorescence with green or white flowers and white styles. Later it forms rugose oblong to ellipsoidal glabrous fruit that are long. It regenerates from seed only. The shrub is often confused with Grevillea intricata which has a glabrous inner perianth surface and more tangled foliage.Grevillea subtiliflora'' is found in shrubland amongst medium to low trees. It is confined the Paynes Find area and grows well in red clay and loam soils. See also List of Grevillea species References subtiliflora Proteales of Australia Eudicots of Western Australia Taxa named by Donald McGillivray