Acacia pachyphylla is a shrub belonging to the genus Acacia and the subgenus Phyllodineae. It is native to an area along the south coast in the Goldfields-Esperance region of Western Australia. The low, spreading and pungent shrub typically grows to a height of 0.1 to 0.3 metres (0.3 to 1.0 ft). It blooms from October to December and produces yellow flowers.