| Oterei River | |
| Mouth Location: | Cook Strait |
| Subdivision Type1: | Country |
| Subdivision Name1: | New Zealand |
| Length: | 20km (10miles) |
The Oterei River (officially Ōterei River) is a river of the southern Wairarapa, in the Wellington Region of New Zealand's North Island. It flows initially northwest before turning south to reach Cook Strait 30km (20miles) northeast of Cape Palliser.
In December 2019, the approved official geographic name of the river was gazetted as "Ōterei River".[1]