| Cadoxton River Cadoxton Brook | |
|---|---|
 The river in the area known as the Millfields, near Dinas Powys | |
| Native name | Afon Tregatwg (Welsh) |
| Location | |
| Country | Wales, United Kingdom |
| Region | South Wales |
| County | Vale of Glamorgan |
| Cities | Michaelston-le-Pit, Dinas Powis, Barry, The Bendricks, Vale of Glamorgan |
| Physical characteristics | |
| Source | |
| • location | Michaelston-le-Pit, Vale of Glamorgan, Wales |
| • coordinates | 51°26′46″N 3°13′09″W / 51.4460°N 3.2192°W |
| Mouth | Bristol Channel |
• coordinates | 51°23′43″N 3°14′58″W / 51.3954°N 3.2495°W |
| Length | 8.0 km (5.0 mi) |
| Discharge | |
| • location | The Bendricks, Vale of Glamorgan |
The Cadoxton River (Welsh: Afon Tregatwg) is a short river in the Vale of Glamorgan, South Wales and with a length of about 5 miles/8 kilometres it is one of Wales's shortest rivers.