The Montgomery Canal, known colloquially as "The Monty", is a partially restored canal in Powys, Wales and in northwest Shropshire. Originally planned to run from Llanymynech to Newtown via Welshpool, the canal is today considered to run 33 miles (53 km) from the Llangollen Canal (at Frankton Junction) to Newtown.
John Dadford was appointed Engineer and his brother Thomas Dadford Junior was appointed his assistant. Due to extensive difficulties with the Vyrnwy Aqueduct and the Berriew Aqueduct, John Dadford resigned, and William Jessop was called in. John Dadford was later replaced by Thomas Dadford senior.
Unlike the other canals, the primary purpose of the canal was to transport lime for agricultural purposes, which would allow the Upper Severn Valley to become better agricultural land. As a result, the promoters of the canal included local landowners who hoped to achieve a return on their investment through greater crop yields, rather than relying upon share dividends.