Acacia triptycha is a shrub or tree of the genus Acacia and the subgenus Plurinerves. It is native to an area along the south coast in the South West, Great Southern and Goldfields-Esperance regions of Western Australia. The bushy shrub or tree typically grows to a height of 0.6 to 4 metres (2 to 13 ft). It blooms from June to January and produces yellow flowers.