Cape Leeuwin water wheel, sometimes called the petrified water wheel, is a non-operating water wheel, near Cape Leeuwin, in the south-west of Western Australia. It was used to pump fresh water to the Cape Leeuwin Lighthouse. It is notable both for its coastal location and because it has become heavily calcified. The water wheel is located above a small cove, approximately 400m to the north of the Cape Leeuwin Lighthouse cottages. The base of the water wheel structure is just above the high-tide sea level.

Cape Leeuwin is the most south-westerly mainland point of the Australian continent, in the state of Western Australia.