Kalymna Falls is a seasonal waterfall within the Grampians National Park in Victoria, Australia, where Mount William Creek tumbles down a striking sandstone rock wall into a small pool below.

The enclosed, shady surroundings give the site a lush and sheltered atmosphere. The falls are approximately 15 metres high and are best visited in spring following rainfall, when water flow is at its strongest.

A short return walk of around 3 kilometres begins at the Kalymna Falls Campground on Mount William Picnic Ground Road near Pomonal, descending to the base of the falls where visitors can get up close to the cascade.

Note that Mount William Picnic Ground Road may close during the wet season, so checking conditions before visiting is advisable.