The South West Wilderness of Tasmania, Australia is a remote and inaccessible region of South West Tasmania containing unspoilt scenery, rugged peaks, wild rivers, unique flora and fauna, and a long and rugged coastline. Parts of the wilderness are more than 50 km from the nearest road, so the only access to the area is by foot, air or sea.
It has been known by a variety of names over the last century, and the label has been affected by a number of threats to the region. For some the term The Southwest has been the usual term, while recent maps and tourism promotion material have identified it variously including the Southwest Wilderness and South-West Wilderness.