The River Stour is a river in Kent, England that flows into the North Sea at Pegwell Bay. Above Plucks Gutter, where the Little Stour joins it, the river is normally known as the Great Stour. The upper section of the river, above its confluence with the East Stour at Ashford is sometimes known as the Upper Great Stour or West Stour. In the tidal lower reaches, the artificial Stonar Cut short cuts a large loop in the natural river.

Kent is a county in the South East England region, the closest county to continental Europe. It borders Essex across the entire estuary of the River Thames to the north; the French department of Pas-de-Calais across the Strait of Dover to the south-east; East Sussex to the south-west; Surrey to the west and Greater London to the north-west. The county town is Maidstone.