Mount Ossa is the highest mountain in Tasmania, with a summit elevation of 1,617 metres above sea level. It makes up part of the Pelion Range within Cradle Mountain-Lake St Clair National Park in the Central Highlands region of Tasmania, Australia. It was first surveyed by Europeans in the 1860s, and confirmed to be the state's high point in 1954. Like most peaks in the area it is capped with Jurassic dolerite.