The Rahu River is a river in the Buller District of New Zealand's South Island.

From the junction of these two branches, the Rahu flows initially southeast before turning north to flow into the Maruia River 5 kilometres (3.1 mi) north of Springs Junction.

State Highway 7 follows the upper course of the Rahu to the northwest of Springs Junction, crossing the Rahu Saddle into the valley of the Inangahua River.

"Place name detail: Rahu River".

This article about a river in the West Coast Region of New Zealand is a stub.