The Great Western Tiers are a collection of mountain bluffs that form the northern edge of the Central Highlands plateau in Tasmania, Australia. The bluffs are contained within the Tasmanian Wilderness World Heritage Site.
The bluffs stretch northwest to southeast over 100km from the 1420m Western Bluff near the town of Mole Creek to the 1210m Millers Bluff, approximately 25km west of Campbell Town.