John Manners, 8th Earl of Rutland, was an English politician who sat in the House of Commons from 1640 until 1641 when he inherited the title Earl of Rutland on the death of his second cousin George Manners, 7th Earl of Rutland.

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.