Grevillea didymobotrya is a shrub in the family Proteaceae. It is endemic to south-western Western Australia. It grows to between 1 and 3 metres in height and produces flowers between August and December (late winter to early summer) in its native range.The infloresences are cream or yellow terminal racemes. The leaves are 1 to 12 cm long and 1 to 9 mm wide.