Duke of Cornwall is an English hereditary title.

Duke of Cornwall may also refer to: List of dukes of Cornwall, including Charles III (born 1948; ), King of the United Kingdom; Duke of Cornwall from 1952 to 2022 William, Prince of Wales (born 1982), Duke of Cornwall since 2022 Duke of Cornwall, a character in the play King Lear , named Duke of Cornwall from 1898 to 1928 Duke of Cornwall Hotel, Plymouth, Devon, England, United Kingdom

See also Cornwall (disambiguation) Duchess of Cornwall, the wife of the Duke of Cornwall titleholder, including Queen Camilla (born 1947), titular holder from 2005 to 2022 by marriage to Charles Catherine, Princess of Wales (born 1982), titular holder since 2022 by marriage to William Duchy of Cornwall, the estate associated with the Duke of Cornwall title Duke of Cornwall's Light Infantry, a British Army regiment Earl of Cornwall, superseded by the Duke of Cornwall title in 1337 Rosa 'Duchess of Cornwall', an orange garden rose