| Whangamōmona River | |
| Name Etymology: | Maori meaning bountiful valley |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Subdivision Type2: | Region |
| Subdivision Name2: | Manawatū-Whanganui |
| Subdivision Type3: | District |
| Subdivision Name3: | Stratford |
| Subdivision Type4: | Towns |
| Subdivision Name4: | Whangamōmona |
| Subdivision Type5: | Settlements |
| Subdivision Name5: | Kohuratahi, Marco |
| Length: | 54km (34miles) |
| Source1: | Tahora Saddle |
| Source1 Elevation: | 275m (902feet) |
| Mouth: | Whanganui River |
| Mouth Elevation: | 82m (269feet) |
| Progression: | Whangamōmona River → Whanganui River |
| River System: | Whanganui River |
| Tributaries Left: | Mangare Stream, Poarangi Stream, Kuri Stream, Otomaroto Stream |
| Tributaries Right: | Mangatuhua Stream, Arnold Stream, Miro Stream, Taumata Stream, Ngaia Stream |
The Whangamōmona River is a river of the Manawatū-Whanganui region of New Zealand's North Island. It flows generally southeast from its sources near Whangamōmona before turning east to reach the Whanganui River.
In July 2020, the name of the river was officially gazetted as Whangamōmona River by the New Zealand Geographic Board.[1]