Allocasuarina zephyrea is a species of flowering plant in the family Casuarinaceae and is endemic to Tasmania.

Male flowers are arranged in spikes 10–35 mm (0.39–1.38 in) long, with 5 to 7 whorls per centimetre (per 0.39 in.

[2] Allocasuarina zephyrea was first formally described in 1989 by the botanist Lawrence Alexander Sidney Johnson in the Flora of Australia at Ocean Beach near Strahan in 1949.

[3][4] The specific epithet (zephyrea) means "west wind", referring to the species' occurrence on the western side of Tasmania.

[4] Allocasuarina zephyrea is endemic to Tasmania, growing in woodland, heath, sedgeland and on rocky outcrops from the western lowlands to central and south-eastern highlands, as well as on King Island.