River Dinan
| River Dinan River Dinin, River Deen  | |
|---|---|
New Dinin Bridge  | |
| Etymology | Irish dianan, "fast/rapid river, flood" | 
| Native name | An Deighean (Irish) | 
| Physical characteristics | |
| Source | |
| • location | southeast County Laois | 
| Mouth | |
 • location  | Celtic Sea via River Nore | 
| Length | 39.83 km (24.75 mi) | 
| Basin size | 153 km2 (59 sq mi) | 
| Discharge | |
| • average | 0.210 m3/s (7.4 cu ft/s) | 
The River Dinan, Deen or Dinin is a river in Ireland, flowing through County Kilkenny and County Laois.