| Weld | |
| Pushpin Map: | Australia Western Australia |
| Pushpin Map Caption: | Location of the mouth in Western Australia |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | Western Australia |
| Subdivision Type3: | Region |
| Subdivision Name3: | South West |
| Length: | 37km (23miles) |
| Source1: | Mount Burnside |
| Source1 Location: | Lake Muir State Forest |
| Source1 Elevation: | 211m (692feet) |
| Mouth: | Deep River |
| Mouth Coordinates: | -34.8253°N 116.5831°W |
| Mouth Elevation: | 52m (171feet) |
| Basin Size: | 240km2 |
| Custom Label: | National park |
| Custom Data: | Shannon National Park |
| Extra: | [1] [2] |
The Weld River is a river in the South West region of Western Australia.
The river rises below Mount Burnside in the Lake Muir State forest. The river flows in a southerly direction through the Shannon National Park until it flows into the Deep River, of which it is a tributary.
The water quality of the river is excellent and is considered fresh.[3]