Acacia glaucocaesia is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae. It is native to an area in the Pilbara and Kimberley regions of Western Australia. The dense glabrous shrub or tree typically grows to a height of 1.8 to 6.0 metres (6 to 20 ft) and produces yellow flowers from July to September.