Acacia bifaria is a shrub belonging to the genus Acacia. It is native to an area along the south coast of Western Australia. The shrub is a prostrate to semi-prostrate often domed in shape. It typically grows to a height of 0.3 to 0.8 metres (1.0 to 2.6 ft) and a width of 2 m (6.6 ft). It produces yellow spherical inflorescences between August and December.