| Iya | |
| Mouth: | Angara |
| Mouth Location: | Bratsk Reservoir |
| Mouth Coordinates: | 55.4681°N 101.595°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 484km (301miles) |
| Basin Size: | 18100km2 |
The Iya is a river in Irkutsk Oblast in Russia.[1] The river is 484km (301miles) long, and its basin covers 18100km2. The Iya flows into the Okinsky Bay of the Bratsk Reservoir. The river freezes up in late October or early November and stays icebound until late April or early May. The town Tulun lies on the Iya. Its main tributaries are the (from the right),, and Ilir (from the left).[2]