Eucalyptus gunnii, commonly known as cider gum,[5] is a species of large tree in the flowering plant family Myrtaceae.

[5][8] Eucalyptus gunnii was first formally described in 1844 by the British botanist Joseph Dalton Hooker in the London Journal of Botany.

The type material was collected "on the elevated tablelands of the interior of Tasmania, especially in the neighborhood of the lakes" by Ronald Campbell Gunn.

[11] Cider gum is native to woodland in Tasmania, where it occurs on the plains and slopes of the central plateaux and dolerite mountains at altitudes up to about 1,100 m (3,600 ft), with isolated occurrences south of Hobart.

[19] The Aboriginal people of Tasmania used the sap of the tree to produce a fermented beverage called way-a-linah.