Brodick Castle is a castle situated outside the port of Brodick on the Isle of Arran, an island in the Firth of Clyde, Scotland. It was previously a seat of the Dukes of Hamilton, but is now owned by the National Trust for Scotland. The castle is a Category A listed building and the grounds are included in the Inventory of Gardens and Designed Landscapes in Scotland.

Brodick is the main village on the Isle of Arran, in the Firth of Clyde, Scotland. It is halfway along the east coast of the island, in Brodick Bay below Goat Fell, the tallest mountain on Arran. The name is derived from the Norse "breda-vick" meaning "Broad Bay".