Berw Nant yr Ychen, also known as Virgin Falls, is a waterfall located in the Blaencwm area of the Rhondda Cynon Taf valley in South Wales.

It sits on the cliff face visible from the walking track that begins at the end of the Blaencwm parking area, and can be spotted through gaps in the trees as visitors make their way along the route.

The falls are part of a cluster of waterfalls in the area, alongside the taller Pen Pych Waterfall (Berw Wion) and the smaller Nant y Gwair Falls.

A stepped path connects the viewpoints and waterfall bases, allowing walkers of varying abilities to explore the area, though the upper reaches near Nant yr Ychen are recommended only for more experienced visitors.