Eucalyptus lesouefii, commonly known as goldfields blackbutt,[2] is a species of mallet or tree that is endemic to central Western Australia.

[2] It has rough, black bark on the lower trunk, smooth bark above, lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and cup-shaped fruit.Eucalyptus lesouefii is a mallet or tree that grows to a height of 5–18 m (16–59 ft) but does not form a lignotuber.

[7] The goldfields blackbutt is found on flats and slopes, in alluvial areas and elsewhere, in the Coolgardie, Great Victoria Desert and Murchison biogeographic regions centred around Kalgoorlie, Western Australia.

Eucalyptus lesouefii is generally found on sandy loam, and occasionally with clays or gravel soils.

Trees are vulnerable to white ant infestation, which occupy individuals of all ages in its native habitat and reduce its utility.