The Wannon Falls[1] are a punchbowl waterfall located in the Southern Grampians Shire, approximately 19 kilometres (12 mi) west of Hamilton, in western Victoria, Australia.

The falls are fed by the Wannon River that has its head waters in the Grampians mountains.

The falls are unexpected after driving west across gently undulating lava plains.

Downstream of the falls there is a narrow steep-walled valley, with cascades around large blocks that have fallen in from the sides.

The narrow valley was eroded as the falls retreated upstream as a result of undermining of a soft bed of sediments that underlies the hard basalt.