The Mac-Mac Falls is a 65-metre waterfall on the Mac-Mac River in the Mac-Mac Forest Nature Reserve, Mpumalanga, South Africa.
Originally, the waterfall had a single stream, but miners used dynamite on the waterfall in the hopes of exposing the gold-rich reef, which now has the water falling in two streams.
It was declared a Provincial Heritage Site February 18, 1983, along with the indigenous forest in the kloof below the waterfall.