| River Dysynni | |
|---|---|
 Dysynni estuary | |
 | |
| Location | |
| Country | Wales |
| Physical characteristics | |
| Source | Tal-y-llyn Lake |
| • location | Wales |
| Mouth | |
• location | Irish Sea |
The River Dysynni (Welsh: Afon Dysynni) is a river in mid Wales. Its source is the Tal-y-llyn Lake (Welsh: Llyn Mwyngil) just south of the Cadair Idris massif and its mouth is in the Cardigan Bay area of the Irish Sea to the north of Tywyn. It measures about 16 mi (26 km) in length.
