| Oyat River | |
|---|---|
| Origin | Chaimozero Lake |
| Mouth | Svir River |
| Basin countries | Russia |
| Length | 266 km |
| Source elevation | 226 m |
| Avg. discharge | 55 m³/s |
Oyat (Russian: Оять) is a river in Vologda Oblast and Leningrad Oblast of Russia, a left tributary of the Svir River (Lake Ladoga basin).