| Wonnangatta | |
| Pushpin Map: | Australia Victoria |
| Pushpin Map Caption: | Location of the Wonnangatta River mouth in Victoria |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | Victoria |
| Subdivision Type3: | Region |
| Subdivision Name3: | Australian Alps (IBRA), South East Corner (IBRA), Victorian Alps, East Gippsland |
| Subdivision Type5: | LGAs |
| Subdivision Name5: | Mansfield, Wellington, East Gippsland |
| Length: | 151km (94miles) |
| Source1: | Mount Despair, Great Dividing Range |
| Source1 Location: | east of |
| Source1 Coordinates: | -37.1372°N 146.7633°W |
| Source1 Elevation: | 1220m (4,000feet) |
| Mouth: | confluence with the Wentworth River and Swamp Creek to form the Mitchell River |
| Mouth Location: | Horseshoe Bend, north of Mitchell River National Park |
| Mouth Coordinates: | -37.5781°N 147.3689°W |
| Mouth Elevation: | 137m (449feet) |
| River System: | Mitchell River catchment |
| Tributaries Left: | Humffray River, Black Snake Creek, Wongungarra River, Dargo River |
| Tributaries Right: | Dry River, Conglomerate Creek, Moroka River, Scrubby Creek, Wombat Creek, Castleburn Creek, Bulgaback Creek |
| Custom Label: | National park |
| Custom Data: | Alpine NP |
| Extra: | [1] [2] |
The Wonnangatta River is a perennial river of the Mitchell River catchment, located in the Alpine and East Gippsland regions of the Australian state of Victoria.
The Wonnangatta River rises below Mount Despair, part of the Great Dividing Range, east of in a remote state forestry protected area, called the Wonnangatta River Reference Area. The river flows generally south by east, in a highly meandering course, joined by eleven tributaries including the Dry, Humffray, Moroka, Wongungarra and Dargo rivers, before reaching its confluence with the Wentworth River and Swamp Creek to form the Mitchell River north of the Mitchell River National Park, in the Shire of East Gippsland. The river descends over its 151km (94miles) course.[2]
At the locality of Riverford, the Dargo Road traverses the river.[2]
In the Aboriginal Braiakaulung dialect of the Gunai language, there are two variant names for the Wonnangatta River; Wontwun; and WonnangaUa. Their meanings are not clearly defined.