The River Stour is a river in Kent, England. It is Kent's second longest river (after the Medway) it is 21.5 miles long.

One of its sources rises at Postling near Hythe and becomes the River East Stour. Another rises at Lenham near Maidstone and becomes the River West Stour. They join at Ashford to become the River Great Stour.

The Great Stour flows through Canterbury and Plucks Gutter. The River Little Stour then joins the Great Stour to become the River Stour. The River Wantsum joins here, too, and the Stour flows through Sandwich and into the English Channel at Ramsgate.

See also

• Rivers of the United Kingdom