| Mummel Gulf National Park New South Wales | |
|---|---|
 New Country Swamp, Mummel Gulf National Park | |
  Mummel Gulf National Park | |
| Nearest town or city | Walcha |
| Coordinates | 31°18′45″S 151°50′40″E / 31.31250°S 151.84444°E |
| Established | 1999 |
| Area | 122 km2 (47.1 sq mi) |
| Managing authorities | NSW National Parks and Wildlife Service |
| Website | Mummel Gulf National Park |
| See also | Protected areas of New South Wales |
Mummel Gulf is a national park located in New South Wales, Australia, approximately 487 kilometres (303 mi) by road north of Sydney. It is situated approximately 50 kilometres (31 mi) southeast of Walcha on the unsealed Enfield Forest Road and 12 kilometres (7.5 mi) south of the Oxley Highway.
The Mummel River has formed the deep V-shaped gorge of the Mummel Gulf, which exceeds 400 metres (1,300 ft) in the head of this gorge.