Diorite Falls is a broad slab waterfall on Waterfall Creek in the Paluma Range near Townsville, North Queensland. Water cascades across a wide face of dark diorite rock, fanning into a sheet of white water before dropping into a deep swimming pool below.

The surrounding amphitheatre of sculpted rock ledges and dense rainforest makes it one of the more striking waterfalls in the Paluma area. The falls are typically accessed via an approximately 18 km loop from Paluma Dam.

A common route crosses the dam wall and heads northeast to Waterfall Creek, where walkers rock-hop around 100 metres upstream to reach the falls. A return via the southern track connects back to the main trail network.

Swimmers should be aware that leeches are present in the area.