| Samaia River | |
| Name Other: | Simaia River |
| Pushpin Map: | Papua New Guinea |
| Pushpin Map Caption: | Location within Papua New Guinea |
| Subdivision Type1: | Country |
| Subdivision Type3: | Region |
| Subdivision Name3: | Sandaun Province |
| Source1 Location: | Papua New Guinea |
| Mouth Coordinates: | -3.9558°N 141.2774°W |
The Samaia River or Simaia River is a river in Sandaun Province, Papua New Guinea.[1] [2] The river flows through Green River Rural LLG.
Various Papuan languages are spoken in the watershed of the Samaia River, including the Amto–Musan languages (also called the Samaia River languages).[3]