Blair Castle stands in its grounds near the village of Blair Atholl in Perthshire in Scotland. It is the ancestral home of the Clan Murray, and was historically the seat of their chief, the Duke of Atholl, though the current Duke, Bruce Murray, lives in South Africa. The castle stands in Glen Garry, and commands a strategic position on the main route (now the A9 road) through the central Scottish Highlands.
The castle is a category A listed building, and the grounds are included in the Inventory of Gardens and Designed Landscapes in Scotland, the national listing of significant gardens.