The Maatsuyker Islands Group is a group of islands and rocks located 5.5 kilometres off the south coast of Tasmania. Maatsuyker Island is the southernmost island of the group and of the Australian continental shelf. There are exposed rocks further south of Maatsuyker but they do not meet the definition of "islands". Macquarie Island, far to the south, is also Australian territory but it is an upthrust piece of ocean floor in the remote Southern Ocean and is in a geological sense completely separate from the continent.
The group is noted for its rich marine wildlife, predominantly wet and windy weather conditions, and Australia's most southerly lighthouse. The group is part of the Southwest National Park and thus also part of the Tasmanian Wilderness World Heritage Site.