| Mount Allyn | |
| Photo Size: | 300 |
| Elevation M: | 1125 |
| Country: | Australia |
| Location: | Chichester State Forest, Upper Hunter region, New South Wales, Australia |
| Range: | Allyn Range |
| Listing: | List of mountains in Australia |
| Map: | Australia New South Wales |
| Label Position: | left |
| Map Size: | 250 |
| Coordinates: | -32.1247°N 176.74°W |
| Age: | Eocene |
Mount Allyn is a mountain with an elevation of that is part of the Allyn Range, located within the Chichester State Forest, in the Upper Hunter region of New South Wales, Australia. Mount Allyn is located about south southwest of Careys Peak and about northeast of Muswellbrook.
Snow often falls in winter. Much of the mountain is covered in Antarctic Beech cool temperate rainforest.[1]
There is dirt-road access to the peak.