Acacia marramamba is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae. It is native to an area in the Gascoyne, Pilbara and Goldfields regions of Western Australia. The bushy spinescent shrub or tree typically grows to a height of 1.0 to 3.0 metres (3.3 to 9.8 ft) and produces red and yellow flowers from May to July.