| Lansdowne River | |
| 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: | Mid North Coast |
| Subdivision Type5: | Local government area |
| Subdivision Name5: | Greater Taree |
| Length: | 51km (32miles) |
| Source1: | Mount Gibraltar, Gibraltar Range |
| Source1 Location: | near Upper Lansdowne |
| Source1 Elevation: | 740m (2,430feet) |
| Mouth: | confluence with the Manning River |
| Mouth Location: | near Coopernook |
| Mouth Elevation: | 0m (00feet) |
| River System: | Manning River catchment |
| Custom Label: | National park |
| Custom Data: | Coorabakh |
| Extra: | [1] |
Lansdowne River, a watercourse of the Manning River catchment, is located in the Mid North Coast district of New South Wales, Australia.
Lansdowne River rises below Mount Gibraltar in the Gibraltar Range, north northwest of Upper Lansdowne, and flows generally southeast before reaching its confluence with the Northern Arm of the Manning River, near Coopernook. The river descends over its course.[1]
The Pacific Highway crosses the Lansdowne River south-east of Coopernook.