Grevillea micrantha, also known as small-flower grevillea, is a shrub that is endemic to the state of Victoria in Australia. It grows to between 0.3 and 0.6 metres in height and has narrow leaves that are 1 to 4 cm in length and 0.6 to 1 mm in width. The white or pale pink flowers appear between August and January in the species native range. The species was first formally described by botanist Carl Meissner in Linnaea in 1854. It is listed as "Rare in Victoria" on the Department of Sustainability and Environment's Advisory List of Rare Or Threatened Plants In Victoria.