| Chumysh | |
| Mouth: | Ob |
| Mouth Coordinates: | 53.5403°N 83.1678°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 644km (400miles) |
| Basin Size: | 23900km2 |
| Pushpin Map: | Russia Altai Krai |
| Pushpin Map Caption: | Mouth location in Altai Krai, Russia |
The Chumysh is a river in Russia, a right branch of the Ob River.[1] It enters the Ob 88km (55miles) downriver from Barnaul. The Chumysh begins at the confluence of the Kara-Chumysh and the Tom-Chumysh rivers in Kemerovo Oblast. The Chumysh is 644km (400miles) long, and it drains a basin of 23900km2.
About 68 percent of its right-side basin is known as the Salair Ridge and the Pre-Salair plains.