Micromyrtus papillosa is a species of flowering plant in the family Myrtaceae and is endemic to the south-west of Western Australia.

It is sometimes an erect or low, otherwise spreading shrub with egg-shaped leaves with the narrower end towards the base, and white flowers with 5 stamens.

[2][3] Micromyrtus papillosa was first formally described in 2002 by Barbara Lynette Rye in the journal Nuytsia from an unpublished description by John Green from specimens collected on Beacon Hill near Norseman in 1968.

[5] This species of micromyrtus is found on hills and scattered among rocky outcrops in the area between Wubin, Lake Grace and Southern Cross in the Coolgardie bioregion of south-western Western Australia.

[2][3] Micromyrtus papillosa is listed as "Priority One" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[3] meaning that it is known from only one or a few locations which are potentially at risk.