The Cann Quarry Canal was a canal in Devon, England, which ran for just under 2 miles (3.2 km) from Cann Quarry to the River Plym at Marsh Mills. It opened in 1829, and a short tramway connected it to the Plymouth and Dartmoor Railway at Crabtree Junction. It had been replaced by a tramway within ten years, but continued to be used as a mill leat to supply Marsh Mills corn mill, and most of it is still visible.