Eucalyptus tetrapleura, commonly known as the square-fruited ironbark,[2] is a species of small to medium-sized tree that is endemic to northern New South Wales.

Eucalyptus tetrapleura is a tree that typically grows to a height of 30 m (98 ft) and forms a lignotuber.

It has thick, rough, dark grey, furrowed ironbark on the trunk and branches.

[3][4] Eucalyptus tetrapleura was first formally described in 1962 by Lawrie Johnson in Anderson's paper in Contributions from the New South Wales National Herbarium.

[2] The square-fruited ironbark grows in open forest on poorly-drained soil on slightly sloping ground between Casino and Grafton in northern New South Wales.