Duke of Rutland is a title in the Peerage of England, named after Rutland, a county in the East Midlands of England. Earldoms named after Rutland have been created three times; the ninth earl of the third creation was made duke in 1703, in whose family's line the title continues. The heir apparent to the dukedom has the privilege of using the courtesy title of Marquess of Granby.

Rutland, sometimes archaically called Rutlandshire, is a ceremonial county in the East Midlands of England. It borders Leicestershire to the north and west, Lincolnshire to the north-east, and Northamptonshire to the south-west. Oakham is the largest town.