The Ruakituri River is a river of the Gisborne and Hawke's Bay Region of New Zealand's North Island. It initially flows northeast from its sources north of Lake Waikareiti. Within its course are the 72 m high Waitangi Falls. Afterwards it turns southeast for the majority of its course, reaching the settlement of Te Reinga, 25 kilometres (16 mi) north of Wairoa. It merges with the Hangaroa River resulting in the Wairoa River.