Vanishing Falls is a ledge waterfall in South West Tasmania, Australia that drains into a sinkhole.

It is on the Salisbury River in the Southwest National Park.

At Vanishing Falls, the Salisbury River flows over a dolerite plateau underlain by limestone.

The river flows over the edge of the dolerite sill and drains straight into a cave system in the limestone, a phenomenon attributed to karst processes.

The above-ground channel downstream of the plunge pool flows only during floods.