| Tsurumi River | |
| Name Other: | Tsurumi-gawa |
| Pushpin Map: | Japan |
| Length: | 42.5km (26.4miles) |
| Discharge1 Avg: | 10.1m3/s |
| Source1 Location: | Kamioyamada-machi, Machida, Tokyo |
| Mouth: | Tokyo Bay |
| Mouth Location: | Tsurumi-ku, Yokohama |
| Mouth Coordinates: | 35.4785°N 139.6833°W |
| River System: | Tsurumi River |
| Basin Size: | 235km2 |
| Basin Population: | 1,960,000 |
The is a river in Kanagawa and Tokyo Prefectures on Honshū, Japan. It begins in Kamioyamada-machi, Machida and flows 42.5 kilometers before emptying into Tokyo Bay at the Keihin industrial area of Tsurumi-ku, Yokohama.