| Waiorongomai River | |
| Subdivision Type1: | Country |
| Length: | 9km (06miles) |
| Source1 Coordinates: | 41.2139°N 175.121°W |
| Mouth Coordinates: | -41.2593°N 175.1746°W |
The Waiorongomai River is a river of the Wellington Region of New Zealand's North Island. It flows generally east from its sources in the Remutaka Forest Park to reach the southern end of Lake Wairarapa.