Te Rereioturu Falls (also known as Te Rere I Oturu Falls) is a striking waterfall on the Opuiaki River in the Kaimai-Mamaku Forest Park, New Zealand.

The cascade measures approximately 40 metres high and 20–25 metres wide, plunging directly into the river and surrounded by dense bush-clad terrain.

The falls carry a Māori legend tied to Oturu, a member of the Ngāti Ranginui tribe, who reportedly leaped from the falls while being pursued by others from his tribe.

Access is via hiking tracks starting from Ngatuhoa Lodge, with multiple route options ranging from roughly four to six hours return, involving river crossings and bush paths. The falls can also be reached by mountain bike in approximately three hours return.