River Dun

The River Dun may refer to:


 * River Dun (River Kennet), in the English counties of Wiltshire and Berkshire
 * River Dun (River Test), in the English counties of Wiltshire and Hampshire
 * River Dun, an alternative name of the River Don, Yorkshire in England
 * River Dun, Northern Ireland, in County Antrim, Northern Ireland
 * Dun Stone Beck, Horton in Ribblesdale