Acacia nana, also known as the small red-leaved wattle,[1] is a shrub belonging to the genus Acacia and the subgenus Phyllodineae where it is endemic to eastern Australia.
The shrub typically grows to a height of and has reddish to brown branchlets that are usually hairy. Like most species of Acacia it has phyllodes rather than true leaves. The evergreen phyllodes have a straight narrowly elliptic to oblanceolate shaped phyllodes with an excentric mucro. The glabrous to sub-glabrous phyllodes are in length and wide with a single nerve per face and age to a red colour. It has racemose inflorescences with spherical flower-heads that contain 7 to 12 golden coloured flowers. Following flowering it produces chartaceous and glabrous seed pods that have a narrowly oblong to linear shape with a length of around and a width of . The dark brown seeds inside have an elliptic shape and a length of about .
It is native to a disjunct area in the northern and central tablelands of New South Wales.[2] The northernmost populations are found around Longford and Ebor and the southern populations are in the western Blue Mountains around Capetree and Cullen Bullen.[2]