Kunzea sericothrix is a plant in the myrtle family, Myrtaceae and is endemic to Queensland.

The leaves are arranged alternately along the branches and are linear to lance-shaped with the narrower end towards the base.

[2] Kunzea sericothrix was first formally described in 2016 by Hellmut Toelken and the description was published in Journal of the Adelaide Botanic Gardens.

[3][2] The specific epithet (sericothrix) is derived from the Ancient Greek words serikos meaning "silken" or "silky"[4]: 712  and thrix meaning "hair",[4]: 799  referring to the fine, long hairs covering the plant.

[2] The only collection of this kunzea was from a plant growing in a rocky watercourse in the Eungella National Park.