| Kamuiwakka River | |
| Name Other: | カムイワッカ川 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Japan |
| Subdivision Type2: | State |
| Subdivision Name2: | Hokkaidō |
| Subdivision Type3: | Region |
| Subdivision Name3: | Abashiri |
| Subdivision Type4: | District |
| Subdivision Name4: | Shari |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Shari |
| Source1: | Mount Iō |
| Source1 Location: | Shari, Hokkaidō, Japan |
| Source1 Coordinates: | 44.1397°N 145.1458°W |
| Source1 Elevation: | 880m (2,890feet) |
| Mouth: | Pacific Ocean |
| Mouth Location: | Shari, Hokkaidō, Japan |
| Mouth Coordinates: | 44.1592°N 145.1214°W |
| Mouth Elevation: | 0m (00feet) |
is a river in Hokkaidō, Japan. Because of its volcanic origin, the water temperature reaches 30C.[1]
The Kamuiwakka River rises on the slopes of Mount Iō on the Shiretoko Peninsula. It flows Northwest until it reaches the Pacific Ocean. Kamuiwakka Falls are on the Kamuiwakka River.