Sidmouth Rock
| Geography | |
|---|---|
| Location | Southern Ocean |
| Coordinates | 43°50′24″S 147°01′12″E / 43.84000°S 147.02000°E |
| Administration | |
Australia | |
| State | Tasmania |
| Region | Southern |
| Demographics | |
| Population | 0 |
The Sidmouth Rock is a rock islet or small island, located in the Southern Ocean, off the southern coast of Tasmania, Australia. The island is situated approximately 28 kilometres (17 mi) south-east of South East Cape and is contained within the Southwest National Park, part of the Tasmanian Wilderness World Heritage Site. An erosional remnant of the Tasmanian mainland with a diameter of 90 metres (300 ft), the island is estimated to have separated from the Tasmanian mainland at least 15,000 years ago.