| Supply | |
| Map Size: | 280 |
| Pushpin Map: | Australia Tasmania |
| Pushpin Map Size: | 280 |
| Pushpin Map Caption: | Location of the Supply River mouth in Tasmania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | Tasmania |
| Subdivision Type3: | Region |
| Subdivision Name3: | Northern Tasmania |
| Length: | 27km (17miles) |
| Source1: | Mount Careless Forest Reserve |
| Source1 Location: | below Kellys Lookout |
| Source1 Coordinates: | -41.3014°N 146.7683°W |
| Source1 Elevation: | 416m (1,365feet) |
| Mouth: | Tamar River |
| Mouth Location: | Supply Bay, Robigana |
| Mouth Coordinates: | -41.2578°N 146.9467°W |
| Mouth Elevation: | 0m (00feet) |
| River System: | Tamar River |
| Tributaries Left: | Rookery Creek |
| Tributaries Right: | Tunks Creek |
| Custom Label: | Reservoirs |
| Extra: | [1] |
The Supply River is a perennial river located in the northern region of Tasmania, Australia.
The river rises below Kellys Lookout within the Mount Careless Forest Reserve, southwest of and west of . The river flows generally east-northeast, joined by two minor tributaries before reaching its confluence with the Tamar River at Robigana. From this point, the river enters the Bass Strait. The river descends over its 27km (17miles) course.[1] The river is transversed by the West Tamar Highway.
The river draws its name from the supply of fresh water at a waterfall just from the river mouth, discovered in 1804 when the Lady Nelson sailed up the Tamar River.[2] A water mill was built, approximately north of Launceston, upstream of the junction of the Tamar and Supply rivers.[3] [4] A 500m (1,600feet) walking trail leads from the river mouth to the water mill.[5]