Tweeddale is a committee area and lieutenancy area in the Scottish Borders council area in south-eastern Scotland. It had also been a province in the Middle Ages. From 1975 to 1996 it was a local government district. Its boundaries correspond to the historic county of Peeblesshire.

The Scottish Borders is one of 32 council areas of Scotland. It is bordered by West Lothian, Edinburgh, Midlothian, and East Lothian to the north, the North Sea to the east, Dumfries and Galloway to the south-west, South Lanarkshire to the west, and the English ceremonial counties of Cumbria and Northumberland to the south. The largest settlement is Galashiels, and the administrative centre is Newtown St Boswells.