| Cobark River | |
| Name Other: | Hole Creek, Cobakh River, Arundel River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | New South Wales |
| Subdivision Type3: | IBRA |
| Subdivision Name3: | New England Tablelands, NSW North Coast |
| Subdivision Type4: | District |
| Subdivision Name4: | Upper Hunter, Mid North Coast |
| Subdivision Type5: | Local government area |
| Subdivision Name5: | Mid-Coast Council |
| Length: | 27km (17miles) |
| Source1: | Barrington Tops, Great Dividing Range |
| Source1 Location: | near Tunderbolts Lookout, Barrington Tops National Park |
| Source1 Elevation: | 745m (2,444feet) |
| Mouth: | confluence with the Barrington River |
| Mouth Location: | near Upper Bowman |
| Mouth Elevation: | 218m (715feet) |
| River System: | Manning River catchment |
| Tributaries Left: | Dilgry River |
| Custom Label: | National park |
| Custom Data: | Barrington Tops |
| Extra: | [1] |
Cobark River, a perennial river of the Manning River catchment, is located in the Upper Hunter district of New South Wales, Australia.
Cobark River rises in the Barrington Tops within the Great Dividing Range, near Thunderbolts Lookout in the Barrington Tops National Park, and flows generally east by south, joined by the Dilgry River before reaching its confluence with the Barrington River, south southwest of the village of Upper Bowman. The river descends over its course.[1]