The Solway Firth is a firth that forms part of the border between England and Scotland, between Cumbria (including the Solway Plain) and Dumfries and Galloway. It stretches from St Bees Head, just south of Whitehaven in Cumbria, to the Mull of Galloway, on the western end of Dumfries and Galloway. The Isle of Man is also very near to the firth. The firth comprises part of the Irish Sea.
The coastline is characterised by lowland hills and small mountains. It is a mainly rural area with fishing and hill farming (as well as some arable farming) still playing a large part in the local economy, although tourism is increasing. It has also been used for the location of films such as The Wicker Man (starring Edward Woodward), which was filmed around Kirkcudbright.