Acacia hopperiana is a species of flowering plant in the family Fabaceae and is endemic to the far west of Western Australia. It is a dense shrub or small tree with ascending to erect terete phyllodes, spikes of golden yellow flowers and flat, thinly leathery to firmly papery pods.
Acacia hopperiana is a dense, domed or inverted conical shrub that typically grows to a height of up to and wide, sometimes a tree to , with silky hairy, ribbed, red-brown branchlets. Its phyllodes are ascending to erect, slightly rigid long, wide, straight to slightly curved, with ten longitudinal veins and sometimes with a sharply pointed tip. The flowers are golden yellow and borne in spikes long on a peduncle long. Flowering occurs in August, and the pods are flat, thinly leathery to firmly papery, long, wide and moderately to deeply constricted between the seeds. The seeds are oblong to disc-shaped, long and wide, glossy, sometimes mottled with a conical white aril.
It is closely related to Acacia isoneura.
Acacia hopperiana was first formally described in 1999 by Bruce Maslin from specimens he collected north of the Murchison River near the North West Coastal Highway in 1974. The specific epithet (hopperiana) honours Stephen Hopper.
This species of wattle grows on sandplains and dense shrubland in sandy or gritty loam soils. It is found between Carnamah and Watheroo, at Buntine Rock (about north of Wubin), and north of Geraldton in the Avon Wheatbelt, Carnarvon, Geraldton Sandplains and Yalgoo bioregions of far western Western Australia.
Acacia hopperiana is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.