Grevillea decora is a shrub of the genus Grevillea native to an area in the Great Dividing Range of Queensland. The upright shrub typically grows to a height of 2 to 5 metres (7 to 16 ft). It has leathery narrowly egg-shaped or oval leaves that are a dull greyish-green color 7 to 18 centimetres (3 to 7 in) long and 2.5 to 7 cm (1 to 3 in) wide. Inflorescence are a dull, bronze-red colour that appear in dense, terminal, one-sided racemes and are 8 to 15 cm (3 to 6 in) in length, the plant flowers between April and October.