Acacia excentrica is a shrub belonging to the genus Acacia and the subgenus Phyllodineae. It is native to an area in the Goldfields-Esperance, Wheatbelt and Great Southern regions of Western Australia. The spreading prickly shrub typically grows to a height of 0.1 to 0.5 metres (0 to 2 ft) and produces yellow flowers from July to October.