Arai River should not be confused with Left May River.
| Arai River | |
| Pushpin Map: | Papua New Guinea |
| Pushpin Map Caption: | Location within Papua New Guinea |
| Subdivision Type1: | Country |
| Subdivision Type3: | Region |
| Subdivision Name3: | Gulf Province |
| Source1 Location: | Papua New Guinea |
| Mouth Coordinates: | -7.7°N 145.0333°W |
The Arai River or May River is a river in southern Papua New Guinea.[1] [2] Various Papuan languages are spoken in the watershed of the May River, including the Iwam language and the Arai–Samaia languages.