The TÃÂngarÃÂkau River is a river of the Manawatà «-Whanganui region of New Zealand's North Island. It flows south for from its source west of à Âhura in the King Country to reach the Whanganui River. State Highway 43, known as the Forgotten World Highway, travels through the TÃÂngarÃÂkau Gorge.
As the river flows mainly through remote areas there are only five bridges across the river along its entire length.