Duke of Cambridge is a hereditary title of nobility in the British royal family, one of several royal dukedoms in the United Kingdom. The title is named after the city of Cambridge in England. It is heritable by male descendants by primogeniture, and has been conferred upon various members of the British royal family several times throughout history.

Catherine, Princess of Wales, is a member of the British royal family. She is married to William, Prince of Wales, heir apparent to the British throne.