| Waiohine River | |
| Subdivision Type1: | Country |
| Length: | 35km (22miles) |
| Source1 Elevation: | 1500-1NaN-1 |
| Mouth Elevation: | 40-1NaN-1 |
| Discharge1 Avg: | 25m3/s at Waiohine Gorge |
| Basin Size: | 378km2 |
The Waiohine River is a river of the Greater Wellington Region of New Zealand's North Island.
At first it flows generally south from its origins in the Tararua Range west of Ōtaki. It turns south-east once it reaches the plain where it passes to the north of Greytown and flows into the Ruamahanga River at Pāpāwai. Its main tributary is the Mangatarere Stream.[1]
Some of its water reaches Lake Wairarapa directly through many channels and irrigation features in Greytown's fruit-growing district.