豪勋爵岛竹节虫（学名：Dryococelus australis）是澳洲特有的一种大型竹节虫，于1930年一度被视为已灭绝，于2001年却被重新发现（这现象称为拉撒路现象）。此虫实际上已在其最大的栖息地——豪勋爵岛上灭绝，目前仅在邻近的一个火山岩——波尔斯金字塔（Ball's Pyramid）上发现一个小于30个个体的种群，此虫也因此被称为「世上最罕有的昆虫」。

Dryococelus australis, commonly known as the Lord Howe Island stick insect or tree lobster, is a species of stick insect which lives on the Lord Howe Island Group. It was thought to be extinct by 1920, only to be rediscovered in 2001 (this phenomenon is known as the Lazarus effect). It is extinct in its largest habitat, Lord Howe Island, and has been called "the rarest insect in the world", as the rediscovered population consisted of 24 individuals living on the small islet of Ball's Pyramid.