| River Dysynni (Afon Dysynni) | |
| River | |
| Country | Wales |
|---|---|
| Source | Tal-y-llyn Lake |
| Mouth | |
| - location | Irish Sea |
The River Dysynni (Welsh: Afon Dysynni) is a river in mid Wales.
The River Dysynni flows from the western end of Tal-y-llyn Lake and enters Cardigan Bay through the Broad Water lagoon to the north of Tywyn near Tonfanau.