Grevillea rhyolitica, also known as Deua grevillea, is a shrub which is endemic to south-eastern New South Wales in Australia. It grows to between 0.5 and 2 metres in height. The species was segregated from Grevillea victoriae by Bob Makinson in 1997.There are currently two recognised subspecies: \n* G. rhyolitica subsp. rhyolitica \n* G. rhyolitica subsp. semivestita The specific epiphet rhyolitica reflects the association of this species with rhyolite outcrops.