The Runcorn and Weston Canal was a short canal near Runcorn in Cheshire, England, constructed to link the Weston Canal, which is part of the River Weaver Navigation, to the Bridgewater Canal and Runcorn Docks. It was completed in 1859, but was little used. Around half of it became the Arnold Dock in 1876, when it was made wider and deeper, and linked to Fenton Dock by a ship lock.