Eucalyptus delegatensis, commonly known as alpine ash, woollybutt, gum-topped stringybark, and white-top, is a sub-alpine or temperate tree of southeastern Australia. A straight, grey-trunked tree, it reaches heights of over 90 metres in suitable conditions. The tallest currently known specimen is located in Tasmania and is 87.9 m tall. This height is sufficient to make it the 10th tallest species of tree. Among eucalypts, only Eucalyptus regnans grows taller.