Pedley Acacia nigricans is a species of wattle which is endemic to an area on the south coast of Western Australia.

[2] It produces yellow, globular flowers between mid-winter and late spring.

[1] The species was formally described in 1807 by French naturalist Jacques Labillardière who gave it the name Mimosa nigricans, based on plant material collected from Esperance.

[4] It is often situated on coastal sand dunes, on granite hills and among rocks growing in grey or white sandy soils along the south coast of Western Australia in the Goldfields-Esperance regions.

[1] The bulk of the population extends from around Barker Inlet, about 50 km (31 mi) west of Esperance in the west out to around Israelite Bay in the east and extending inland to near Howick Hill, and is also found on several islands in the Recherche Archipelago usually as a part of heath and scrub communities.