Dukes in the United Kingdom

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Duke, in the United Kingdom, is the highest-ranking hereditary title in all five peerages of the British Isles. A duke thus outranks all other holders of titles of nobility (marquess, earl, viscount and baron or lord of parliament).

The wife of a duke is known as a duchess, which is also the title of a woman who holds a dukedom in her own right, referred to as a duchess suo jure; her husband, however, does not receive any title. In the order of precedence in the United Kingdom, non-royal dukes without state offices or positions generally take precedence before all other nobility, in order of date of creation, but after royalty and certain officers of state.