The Tahaenui River is a river of the Hawke's Bay region of New Zealand's North Island.

It flows generally southeast to reach Hawke Bay five kilometres west of Nūhaka.

The New Zealand Ministry for Culture and Heritage gives a translation of "many thieves" for Tāhaenui.

[1] "Place name detail: Tahaenui River".

This article about a river in the Hawke's Bay Region is a stub.