Racosperma ancistrophyllum (C.R.P.Andrews) Pedley Acacia ancistrophylla is a species of flowering plant in the family Fabaceae and is endemic to southern Australia.

It is a dense, rounded shrub, with lance-shaped phyllodes with the narrower end towards the base, spherical heads of yellow flowers, and linear pods up to 40 mm (1.6 in) long.

[2][3][4][5][6] Acacia ancistrophylla was first formally described in 1904 by the botanist Cecil Andrews in the Journal of the West Australian Natural History Society from specimens he collected near Dundas in 1903.

[2][11][15] Variety perarcuata grows in low woodland within a radius of 50–70 km (31–43 mi) of Merredin in Western Australia.

[17][18] Variety lissophylla is listed as "endangered" under the Victorian Government Flora and Fauna Guarantee Act.