| Jinzū River | |
| Pushpin Map: | Japan |
| Subdivision Type1: | Country |
| Subdivision Name1: | Japan |
| Length: | 120km (80miles) |
| Discharge1 Avg: | 163.6m3/s |
| Source1 Location: | Mount Kaore |
| Source1 Elevation: | 1626m (5,335feet) |
| Mouth Location: | Toyama Bay |
| Mouth Coordinates: | 36.7618°N 137.222°W |
| River System: | Jinzū River |
| Basin Size: | 2720km2 |
The is a river that flows from Gifu Prefecture to Toyama Prefecture in Japan. The upper reaches of the river in Gifu are called the Miya River. It is 1200NaN0 in length and has a watershed of 2720km2.
The official name for the river is "Jinzu Gawa" (written じんづうがわ (Jinzū-gawa or Jindzū-gawa)) according to the Geospatial Information Authority of Japan and Japan Coast Guard. However, the pronunciation of the name has variations, including じんずうがわ (Jinzū-gawa) and じんつうがわ (Jintsū-gawa).
The Jinzū River flows from a source at 1626m (5,335feet) on the slopes of Mount Kaore in Takayama, Gifu Prefecture and meets the Takahara River at the border between Gifu and Toyama Prefectures. The upper reaches of the river in Gifu Prefecture are also called the . From the border it flows generally north and empties into Toyama Bay on the Sea of Japan. It's drainage basin covers an area of 2720km2.
It once meandered through the city of Toyama, but the new waterway was constructed in the west of the city to avoid floods. Toyama City Hall and other governments are located on the reclaimed land of the old river.
The river was polluted with cadmium due to mining and caused the itai-itai disease in the downstream towns around World War II.
The Japanese Navy cruiser was named after this river.