Dunmail Park is a shopping centre located in Siddick, near Workington, in Cumbria, United Kingdom. It is located one-and-a-half miles north of the centre of Workington on the A596, and four-and-a-half miles south of the town of Maryport. It is after Dunmail, a legendary king of Cumberland. Construction began in 1986, following the purchase of the site by J Dixon & Son, Ltd on land near Siddick ponds which had been in use since the late 19th century for mining and iron working.