| Bielsdown River | |
| Name Other: | Bielsdown Creek |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | New South Wales |
| Subdivision Type3: | IBRA |
| Subdivision Name3: | NSW North Coast |
| Subdivision Type4: | District |
| Subdivision Name4: | Northern Tablelands |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Bellingen |
| Length Km: | 38 |
| Source1: | Dorrigo Plateau, Great Dividing Range |
| Source1 Location: | west of Dorrigo |
| Source1 Elevation: | 936m (3,071feet) |
| Mouth: | confluence with the Nymboida River |
| Mouth Location: | west of Cascade |
| Mouth Elevation: | 477m (1,565feet) |
| River System: | Clarence River catchment |
| Tributaries Right: | Rocky Creek (New South Wales) |
| Custom Label: | Waterfall |
| Custom Data: | Dangar Falls |
| Extra: | [1] |
Bielsdown River, a perennial stream that is part of the Clarence River catchment, is located in the Northern Tablelands of New South Wales, Australia.
Bielsdown River rises on the Dorrigo Plateau within the Great Dividing Range, below Fernbrook, west of Dorrigo, and flows generally to the north and northeast, joined by one minor tributary towards its confluence with Nymboida River, west of Cascade. The river descends over its course.[1]
About north of Dorrigo, the river descends downs Dangar Falls. The falls are small but picturesque, and are a popular photographic subject.[2]