| Timbarra River | |
| Name Other: | Rocky River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | New South Wales |
| Subdivision Type3: | IBRA |
| Subdivision Name3: | New England Tablelands |
| Subdivision Type4: | District |
| Subdivision Name4: | Northern Tablelands |
| Subdivision Type5: | local government area |
| Subdivision Name5: | Tenterfield |
| Length: | 169km (105miles) |
| Source1: | Gibraltar Range, Great Dividing Range |
| Source1 Location: | east of Bald Nob |
| Source1 Elevation: | 1040m (3,410feet) |
| Mouth: | confluence with Clarence River |
| Mouth Location: | south southwest of Tabulam |
| Mouth Elevation: | 114m (374feet) |
| River System: | Clarence River catchment |
| Tributaries Left: | Morven Creek, Macleods Creek, Plumbago Creek, Nobles Creek |
| Custom Label: | National park |
| Custom Data: | Gibraltar Range NP |
| Extra: | [1] |
Timbarra River, a mostly perennial stream of the Clarence River catchment, is located in the Northern Tablelands district of New South Wales, Australia.
Timbarra River rises on the slopes of Gibraltar Range, east of Bald Nob, and flows generally north northeast, joined by four minor tributaries before reaching its confluence with the Clarence River, south southwest of Tabulam. The river descends over its course;[1] and flows through the Gibraltar Range National Park in its upper reaches. Between Tenterfield and Grafton, the course of Timbarra River flows adjacent to the Bruxner Highway.