Boxley Abbey Barn is a large medieval barn in Boxley, Kent. It is a remnant of the buildings of the mostly demolished Boxley Abbey. The barn is 186 feet (57 m) long, aligned with its long axis roughly east-west, and was built in the late 13th or early 14th century. It is constructed of local ragstone with two storeys and a plan tiled gable roof. Irregularly sized and placed windows and doors punctuate each of its façades.