Acacia merrallii is a shrub belonging to the genus Acacia and the subgenus Phyllodineae. It is native to an area in the Goldfields-Esperance and Wheatbelt regions of Western Australia. The spreading shrub typically grows to a height of 0.3 to 2.0 metres (1.0 to 6.6 ft). It blooms from August to October and produces yellow flowers.