Micromyrtus sulphurea is a species of flowering plant in the family Myrtaceae and is endemic to the inland of Western Australia.

It is a commonly stunted or widely spreading shrub with narrowly oblong leaves pressed against the stem, and yellow flowers with 10 stamens.

The petals are very broadly egg-shaped with the narrower end towards the base, and sulfur-yellow, 1.2–1.4 mm (0.047–0.055 in) long.

[6] Micromyrtus sulphurea grows on sand dunes, sandplains on breakaways and granite outcrops from near Lake Rason to Queen Victoria Spring in the Gascoyne, Murchison and Yalgoo bioregions of inland Western Australia.

[2][3] This species of micromyrtus is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.