Gretna Green is a parish in the southern council area of Dumfries and Galloway, Scotland, on the Scottish side of the border between Scotland and England, defined by the small river Sark, which flows into the nearby Solway Firth. It was historically the first village a traveller would come to in Scotland when following the old coaching route from London to Edinburgh. Gretna Green railway station serves both Gretna Green and Gretna. The Quintinshill rail disaster, the worst rail crash in British history, in which over 220 died, occurred near Gretna Green in 1915.

Dumfries and Galloway is one of the 32 unitary council areas of Scotland, located in the western part of the Southern Uplands. It is bordered by East Ayrshire, South Ayrshire, and South Lanarkshire to the north; Scottish Borders to the north-east; the English ceremonial county of Cumbria, the Solway Firth, and the Irish Sea to the south, and the North Channel to the west. The administrative centre and largest settlement is the town of Dumfries. The second largest town is Stranraer, located 76 miles (122 km) to the west of Dumfries on the North Channel coast.