River Wey, Dorset

This article is about the river in Dorset. For the tributary of the Thames in Surrey, see River Wey (Surrey).

The River Wey of Dorset, south west England, is a short river 9 kilometres long. The river rises in Upwey, where the spring forms in Upwey Wishing Well, at the foot of the South Dorset Downs, a ridge of chalk hills that separate Weymouth from Dorchester. Most of the river's course is in the built-up area of Weymouth, running through the former villages (now suburbs) of Upwey, Broadwey, Nottington, and Radipole, through Radipole Lake and into Weymouth Harbour.

The river is important for wildlife and Radipole Lake is a National Nature Reserve run by the Royal Society for the Protection of Birds.