Acacia lullfitziorum is a shrub belonging to the genus Acacia and the subgenus Phyllodineae. It is native to an area in the Great Southern and Wheatbelt regions of Western Australia. The spreading spinose shrub typically grows to a height of 0.2 to 0.7 metres (0.7 to 2.3 ft) and a width of 0.4 to 1.3 metres (1.3 to 4.3 ft). It blooms from August to October and produces yellow flowers.