The River Teviot, or Teviot Water, is a river of the Scottish Borders area of Scotland, and is the largest tributary of the River Tweed by catchment area. The Teviot is an important river for wildlife, especially the Atlantic salmon, but in recent years has witnessed at least four extreme flooding events.

The River Tweed, or Tweed Water, Scots: Watter o Tweid, Welsh: Tuedd), is a river 97 miles (156 km) long that flows east across the Border region in Scotland and northern England. Tweed cloth derives its name from its association with the River Tweed. The Tweed is one of the great salmon rivers of Britain and the only river in England where an Environment Agency rod licence is not required for angling. The river generates a large income for the local borders region, attracting anglers from all around the world.