The River Piddle or Trent or North River is a small rural Dorset river which rises next to Alton Pancras church (Alton Pancras was originally named Awultune, a Saxon name meaning the village at the source of a river) and flows south and then south-easterly more or less parallel with its bigger neighbour, the River Frome, to Wareham, where they both enter Poole Harbour via Wareham Channel.

Many of the villages it passes through are named after it: Puddletown, Tolpuddle, Piddlehinton, Piddletrenthide, Affpuddle, Briantspuddle, Turnerspuddle.

See also

• Rivers of the United Kingdom
• Piddle Brook

Piddle, Dorset | Rivers in Dorset