Austrosequoia was a genus of redwood that existed from the Cretaceous to Oligocene in what is now Australia and New Zealand.

[2][3] Fossils are known from the Winton Formation, the Little Rapid River in Tasmania and the Tupuangi Formation.

While there have been doubts on its identity as a member of Sequoioideae, it does seem likely based on morphological similarity.

[3] It is not the only evidence of Sequoioideae members in the Southern Hemisphere, as there is some evidence of a species of Sequoia (Sequoia chilensis) that once lived in the Miocene of Chile, though these specimens are questionable.

The ovulate cones are ellipsoidal with 29-49 scales.