Acacia leptocarpa is a shrub or small tree native to New Guinea and coastal regions of Northern Australia. Acacia leptocarpa normally grows as a small tree, 6-10m in height, although it occasionally flowers as a shrub as low as 2 metres tall. It is mostly found in open forest, but will also grow in monsoon forest and rainforest margins. The natural range extends from The Kimberley across The Top End to Cape York Peninsula and southwards to Southern Central Queensland.