Eucalyptus tetrodonta, commonly known as Darwin stringybark or messmate,[2] is a species of medium-sized to tall tree that is endemic to northern Australia.

[2][3][4][5][6] Eucalyptus tetrodonta was first formally described by the botanist Ferdinand von Mueller in 1859 in Journal of the Proceedings of the Linnean Society, Botany.

[7][8] The specific epithet is derived from the ancient Greek words meaning "four" and "a tooth", in reference to the four teeth sometimes found around the rim of the fruit.

[2] A paper published in the journal Australasian Plant Pathology, apparently spelt this species' name as Eucalyptus tetradonta.

[3] The range extends eastward across the top end of the Northern Territory and parts of the Gulf of Carpentaria and Cape York regions in North Queensland.