Grevillea cyranostigma, commonly known as the Carnarvon grevillea or green grevillea, is a shrub species that is endemic to Queensland in Australia. It was first formally described by Don McGillivray in 1975. He named it cyranostigma after Edmond Rostand's Cyrano de Bergerac, as its long stigma was reminiscent of the character's protruding nose. The type specimen was collected between 1890 and 1895 by Harriette Biddulph of Mount Playfair Station, who was known for her collection of plants from the Carnarvon Range. The species appears to be related to Grevillea sericea and G. victoriae, and is distinguished by glossier leaves than the former and a less hairy perianth than both.