Cawdor Castle is a castle in the parish of Cawdor in Nairnshire, Scotland. It is built around a 15th-century tower house, with substantial additions in later centuries. Originally a property of the Calder family, it passed to the Campbells in the 16th century. It remains in Campbell ownership, and is now home to the Dowager Countess Cawdor, stepmother of Colin Campbell, 7th Earl Cawdor.
The castle is best known for its literary connection to William Shakespeare's tragedy Macbeth, in which the title character is made "Thane of Cawdor". However, the story is highly fictionalized, and the castle itself, which is never directly referred to in Macbeth, was built many years after the life of the 11th-century King Macbeth.
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.