Asteromyrtus brassii, also known as Brass's asteromyrtus, is a species of plant in the myrtle family Myrtaceae that is native to New Guinea and Australia.

The species normally grows as a shrub or small tree up to about 6–9 m in height, though exceptionally up to 25 , with a trunk usually not more than 30 cm in diameter.

The bark is layered and flaky, brown to dark grey in colour.

The inflorescences are globose and sessile, with dark red to deep pink, brushlike flowers.

[1][2] In Australia, the species' natural ranger is restricted to the north-eastern Cape York Peninsula of Far North Queensland, no farther south than the McIlwraith Range, though it has been introduced to horticulture elsewhere.