| Waiorongomai River | |
| Pushpin Map: | New Zealand |
| Pushpin Map Alt: | Relief map of New Zealand showing a dot in the northeast to indicate the location of the Waiorongomai River |
| Pushpin Map Caption: | Location of the Waiorongomai River |
| Source1: | Raukūmara Range |
| Source1 Coordinates: | -37.7729°N 178.123°W |
| Mouth: | Tapuaeroa River |
| Mouth Coordinates: | -37.8655°N 178.1988°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | District |
| Subdivision Name2: | Tairāwhiti |
| Length: | 160NaN0 |
The Waiorongomai River is a river of the Gisborne Region of New Zealand's North Island. It rises on the southern slopes of Mount Raukūmara, flowing generally southeast to reach the Tapuaeroa River ten kilometres west of Ruatoria.