Allyn River
| Allyn | |
|---|---|
| Allyn River, surrounded by sub tropical rainforest | |
| Location of the Allyn River mouth in New South Wales | |
| Location | |
| Country | Australia | 
| State | New South Wales | 
| Region | NSW North Coast (IBRA), Hunter | 
| LGA | Dungog | 
| Town | East Gresford | 
| Physical characteristics | |
| Source | Allyn Range, Barrington Tops | 
| • location | near Careys Peak | 
| • coordinates | 32°21′42.9″S 151°31′55.668″E / 32.361917°S 151.53213000°E | 
| • elevation | 655 m (2,149 ft) | 
| Mouth | Paterson River | 
|  • location | Vacy | 
|  • coordinates | 32°3′43.26″S 151°24′57″E / 32.0620167°S 151.41583°E | 
|  • elevation | 15 m (49 ft) | 
| Length | 82 km (51 mi) | 
| Basin features | |
| River system | Hunter River catchment | 
| Tributaries | |
| • left | Chads Creek, Stony Creek (Dungog, New South Wales), Lewinsbrook Creek, McIntyre Creek, Mirari Creek | 
| • right | Masseys Creek, Bucks Creek | 
Allyn River, a perennial stream of the Hunter River catchment, is located in the Hunter region of New South Wales, Australia.