The Buckingham Arm is a canal that once ran from Cosgrove, Northamptonshire to Buckingham (in England). It was built as an arm of the Grand Junction Canal, in two separate phases, opening in 1800 and 1801. It was disused from 1932, but was not finally abandoned until 1964. It is now the subject of a restoration programme with the Buckingham end holding water for a length of nearly 400m.