The Piroa Falls are a waterfall on the North Island of New Zealand. It is located on the Ahuroa River, which flows through the Waipu Gorge in the area of the town of Waipu in the Whangarei District. Its height is around 20 metres. From State Highway 1, 113 km north of Auckland, turn off onto Waipu Gorge Road to the southwest. The waterfall can also be reached from State Highway 12 via the town of Maungaturoto. From a small car park, the Piroa Falls Track leads to the waterfall after a five-minute hike.