Ptilotus astrolasius is a species of flowering plant in the family Amaranthaceae and is endemic to north-western Australia.

It is a compact perennial shrub with egg-shaped leaves, sometimes with the narrower end towards the base, and spikes of greenish-white to pink or yellow flowers with five fertile stamens.

Ptilotus astrolasius is a compact perennial shrub that typically grows to 20–80 cm (7.9–31.5 in) high, has a single stem, and is covered star-shaped hairs.

[2][3] Ptilotus astrolasius was first formally described in 1868 by Ferdinand von Mueller in his Fragmenta Phytographiae Australiae from specimens he collected near "Sturt's Creek".

[2][6] This species of Ptilotus is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[2] and as of "least concern" under the Northern Territory Territory Parks and Wildlife Conservation Act.