Astelia argyrocoma is a species of astelia endemic to the highlands of Kauaʻi in the state of Hawaii, United States.

This plant is found only in native Hawaiian tropical rainforests at higher elevations in forests dominated by ʻōhiʻa lehua trees.

Astelia arygyrocoma is a grass-like shrub with silvery-green leaves 40–100 cm (16–39 in) long and 0.4–1.1 cm (0.16–0.43 in) wide.

Flowers are green and reddish-brown, developing into bright orange berries.

[2] Astelia argyrocoma can only be found in high elevation tropical montane cloud forests[3] on Kauaʻi, between around 500 and 1,400 m (1,600 and 4,600 ft) elevation, particularly on the Alakaʻi plateau.