The Tāngarākau River is a river of the Manawatū-Whanganui region of New Zealand's North Island.

It flows south for 94 km (58 mi) from its source 8 km (5.0 mi) west of Ōhura in the King Country to reach the Whanganui River.

As the river flows mainly through remote areas there are only five bridges across the river along its entire length.

"Place name detail: Tāngarākau River".

This article about a river in Manawatū-Whanganui is a stub.