Allocasuarina acutivalvis is a species of flowering plant in the family Casuarinaceae and is endemic to the southwest of Western Australia.

The female cones are covered with fine, white hairs when young, and are sessile or on a peduncle up to 10 mm (0.39 in) long.

[2][3] This species was first formally described in 1876 by the botanist Ferdinand von Mueller who gave it the name Casuarina acutivalvis in his Fragmenta Phytographiae Australiae.

[8] In the same journal, Johnson described two subspecies of A. acutivalvis, and the names are accepted by the Australian Plant Census: Allocasuarina acutivalvis grows in tall heath and open woodland, sometimes on rocky hillsides, and is widespread in the south-west of Western Australia from north of the Murchison River to Zanthus.

[13][14] Both subspecies of A. acutivalvis are listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.