Micromyrtus rotundifolia is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to a south-eastern Queensland.

[2][3] Micromyrtus rotundifolia was first formally described in 1997 by Anthony Bean in the journal Austrobaileya from specimens collected near Lake Buchanan.

[4] The specific epithet (rotundifolia) means "round leaf", alluding to the almost circular outline of the leaves.

[2] This species of micromyrtus grows in shallow, sandy soils in shrubland or woodland on breakaways between Lake Buchanan and Alpha, although it is rare throughout its range.

[2] Micromyrtus rotundifolia is listed as "vulnerable" under the Queensland Government Nature Conservation Act 1992.